74AHC123A; 74AHCT123A Dual retriggerable monostable multivibrator with reset Rev. 4 — 8 November 2011 Product data sheet 1. General description The 74AHC123A; 74AHCT123A are high-speed Si-gate CMOS devices and are pin compatible with Low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74AHC123A; 74AHCT123A are dual retriggerable monostable multivibrators with output pulse width control by three methods. The basic pulse time is programmed by selection of an external resistor (R ) and capacitor (C ). The external resistor and EXT EXT capacitor are normally connected as shown inFigure11. Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). Byrepeating this process, the output pulse period (nQ=HIGH, nQ=LOW) can be made as long as desired. Alternatively an output delay can be terminated at any time by a LOW-going edge on input nRD, which also inhibits the triggering. An internal connection from nRD to the input gate makes it possible to trigger the circuit by a positive-going signal at input nRD as shown in Table3. Figure8andFigure9 illustrate pulse control by retriggering and early reset. The basic output pulse width is essentially determined by the value of the external timing components R and C . When EXT EXT C 10nF, the typical output pulse width is defined as: t =R C where EXT W EXT EXT t =pulse width in ns; R =external resistor ink; C =external capacitor inpF. W EXT EXT Schmitt-trigger action at all inputs makes the circuit highly tolerant to slower input rise and fall times. 2. Features and benefits  All inputs have a Schmitt-trigger action  Inputs accept voltages higher thanV CC  DC triggered from active HIGH or active LOW inputs  Retriggerable for very long pulses up to 100 % duty factor  Direct reset terminates output pulse  For 74AHC123A only: operates with CMOS input levels  For 74AHCT123A only: operates with TTL input levels  ESD protection: HBM JESD22-A114E exceeds 2000V MM JESD22-A115-A exceeds 200V CDM JESD22-C101C exceeds 1000V  Multiple package options  Specified from 40C to +85C and from 40C to +125C

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 3. Ordering information Table 1. Ordering info rmation Type number Package Temperature range Name Description Version 74AHC123AD 40Cto+125C SO16 plastic small outline package; 16leads; SOT109-1 bodywidth3.9mm 74AHCT123AD 74AHC123APW 40Cto+125C TSSOP16 plastic thin shrink small outline package; 16leads; SOT403-1 bodywidth4.4mm 74AHCT123APW 74AHC123ABQ 40Cto+125C DHVQFN16 plastic dual in-line compatible thermal enhanced SOT763-1 very thin quad flat package; no leads; 16terminals; 74AHCT123ABQ body2.53.50.85mm 4. Functional diagram 14 CX 15 RCX 13 1 & 14 1CEXT 2 6 2CEXT 15 1REXT/CEXT 4 7 2REXT/CEXT 3 R S 13 1Q Q 6 1A 1 5 2Q CX 2A 9 T 7 RCX 4 1Q 5 1B 2 Q 9 12 2Q & 2B 10 RD 10 1RD 3 12 2RD 11 11 R 001aae521 001aae522 Fig 1. Logic symbol Fig 2. IEC logic symbol 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 2 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 14 1CEXT 15 1REXT/CEXT S 13 Q 1Q 1 1A T 4 2 Q 1Q 1B RD 3 1RD 6 2CEXT 7 2REXT/CEXT S 5 Q 2Q 9 2A T 12 10 Q 2Q 2B RD 11 2RD aaa-000650 Fig 3. Functional diagram 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 3 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset nREXT/CEXT VCC Q RD Q R R CL VCC CL VCC R CL A CL CL B R 001aae524 For minimum noise generation it is recommended to ground pins 6 (2CEXT) and 14 (1CEXT) externally to pin 8 (GND). Fig 4. Functional diagram 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 4 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 5. Pinning information 5.1 Pinning 74AHC123A 74AHCT123A C terminal 1 A C 74AHC123A index area 1 V 74AHCT123A 1 16 1B 2 15 1REXT/CEXT 1A 1 16 VCC 1RD 3 14 1CEXT 1B 2 15 1REXT/CEXT 1Q 4 13 1Q 1RD 3 14 1CEXT 2Q 5 12 2Q 1Q 4 13 1Q 2CEXT 6 GND(1) 11 2RD 2Q 5 12 2Q 2REXT/CEXT 7 10 2B 2CEXT 6 11 2RD 8 9 2REXT/CEXT 7 10 2B D A GND 8 9 2A GN 2 001aah067 001aah068 Transparent top view (1) The die substrate is attached to this pad using conductive die attach material. It can not be used as a supply pin or input. Fig 5. Pin configuration SO16, TSSOP16 Fig 6. Pin configuration DHVQFN16 5.2 Pin description Table 2. Pin descripti on Symbol Pin Description 1A 1 negative-edge triggered input 1 1B 2 positive-edge triggered input 1 1RD 3 direct reset LOW and positive-edge triggered input 1 1Q 4 active LOW output 1 2Q 5 active HIGH output 2 2CEXT 6 external capacitor connection 2 2REXT/CEXT 7 external resistor and capacitor connection 2 GND 8 ground (0V) 2A 9 negative-edge triggered input 2 2B 10 positive-edge triggered input 2 2RD 11 direct reset LOW and positive-edge triggered input 2 2Q 12 active LOW output 2 1Q 13 active HIGH output 1 1CEXT 14 external capacitor connection 1 1REXT/CEXT 15 external resistor and capacitor connection 1 V 16 supply voltage CC 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 5 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 6. Functional description Table 3. Function tab le[1] Input Output nRD nA nB nQ nQ L X X L H X H X L[2] H[2] X X L L[2] H[2] H L  H  H  L H [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care;  = LOW-to-HIGH transition;  = HIGH-to-LOW transition; = one HIGH level output pulse; = one LOW level output pulse. [2] If the monostable multivibrator was triggered before this condition was established, the pulse will continue as programmed. 7. Limiting values Table 4. Limiting valu es In accordance with the Absolute Maximum Rating System (IEC 60134).Voltages are referenced to GND (ground = 0V). Symbol Parameter Conditions Min Max Unit V supply voltage 0.5 +7.0 V CC V input voltage 0.5 +7.0 V I I input clamping current V < 0.5V [1] 20 - mA IK I I output clamping current V <0.5V orV >V +0.5V [1] - 20 mA OK O O CC I output current V = 0.5V to (V +0.5V) - 25 mA O O CC I supply current - 75 mA CC I ground current 75 - mA GND T storage temperature 65 +150 C stg P total power dissipation T = 40 C to +125C tot amb SO16 package [2] - 500 mW TSSOP16 package [3] - 500 mW DHVQFN16 package [4] - 500 mW [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] Ptotderates linearly with 8mW/K above 70C. [3] Ptot derates linearly with 5.5mW/K above 60C. [4] Ptot derates linearly with 4.5mW/K above 60C. 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 6 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 8. Recommended operating conditions Table 5. Recommend ed operating conditions Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 74AHC123A 74AHCT123A Unit Min Typ Max Min Typ Max V supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 V CC V input voltage 0 - 5.5 0 - 5.5 V I V output voltage 0 - V 0 - V V O CC CC T ambient temperature 40 +25 +125 40 +25 +125 C amb t/V input transition rise V = 3.3 V  0.3 V - - 100 - - - ns/V CC and fall rate V = 5.0 V  0.5 V - - 20 - - 20 ns/V CC 9. Static characteristics Table 6. Static charac teristics Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ Max Min Max Min Max 74AHC123A V HIGH-level V = 2.0 V 1.5 - - 1.5 - 1.5 - V IH CC input voltage V = 3.0 V 2.1 - - 2.1 - 2.1 - V CC V = 5.5 V 3.85 - - 3.85 - 3.85 - V CC V LOW-level V = 2.0 V - - 0.5 - 0.5 - 0.5 V IL CC input voltage V = 3.0 V - - 0.9 - 0.9 - 0.9 V CC V = 5.5 V - - 1.65 - 1.65 - 1.65 V CC V HIGH-level V = V or V OH I IH IL output I = 50A; V =2.0 V 1.9 2.0 - 1.9 - 1.9 - V O CC voltage I = 50A; V =3.0 V 2.9 3.0 - 2.9 - 2.9 - V O CC I = 50A; V =4.5 V 4.4 4.5 - 4.4 - 4.4 - V O CC I = 4.0mA; V =3.0 V 2.58 - - 2.48 - 2.40 - V O CC I = 8.0mA; V =4.5 V 3.94 - - 3.8 - 3.70 - V O CC V LOW-level V = V or V OL I IH IL output I = 50A; V =2.0 V - 0 0.1 - 0.1 - 0.1 V O CC voltage I = 50A; V =3.0 V - 0 0.1 - 0.1 - 0.1 V O CC I = 50A; V =4.5 V - 0 0.1 - 0.1 - 0.1 V O CC I = 4.0mA; V =3.0 V - - 0.36 - 0.44 - 0.55 V O CC I = 8.0mA; V =4.5 V - - 0.36 - 0.44 - 0.55 V O CC I input leakage V =5.5VorGND; I I current V =0V to 5.5V CC nREXT/CEXT [1] - - 0.25 - 2.5 - 10.0 A pins nA, nB, nRD - - 0.1 - 1.0 - 2.0 A 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 7 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset Table 6. Static characteristics …continued Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ Max Min Max Min Max I supply V =V orGND; I = 0 A; - - 4.0 - 40 - 80 A CC I CC O current V =5.5V CC active state (per circuit); [1] V =V orGND I CC V =3.0 V - 160 250 - 280 - 280 A CC V =4.5 V - 380 500 - 650 - 650 A CC V =5.5 V - 560 750 - 975 - 975 A CC C input - 5.0 10 - 10 - 10 pF I capacitance C output - 4.0 - - - - - pF O capacitance 74AHCT123A V HIGH-level V = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V IH CC input voltage V LOW-level V = 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V IL CC input voltage V HIGH-level V = V or V ; V =4.5 V OH I IH IL CC output I = 50A 4.4 4.5 - 4.4 - 4.4 - V O voltage I = 8.0mA 3.94 - - 3.8 - 3.70 - V O V LOW-level V = V or V ; V =4.5 V OL I IH IL CC output I = 50A - 0 0.1 - 0.1 - 0.1 V O voltage I = 8.0mA - - 0.36 - 0.44 - 0.55 V O I input leakage nREXT/CEXT; [1] - - 0.25 - 2.5 - 10.0 A I current V =5.5VorGND; I V =0V to 5.5V CC pins nA, nB, nRD; - - 0.1 - 1.0 - 2.0 A V =V orGND; I CC V =5.5V CC I supply V =V orGND; I = 0 A; - - 4.0 - 40 - 80 A CC I CC O current V =5.5V CC active state (per circuit); [1] V =V orGND I CC V =4.5 V - 380 500 - 650 - 650 A CC V =5.5 V - 560 750 - 975 - 975 A CC C input - 3 10 - 10 - 10 pF I capacitance C output - 4.0 - - - - - pF O capacitance [1] Voltage on nREXT/CEXT = 0.5 VCC and pin nREXT/CEXT in OFF-state during test. 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 8 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 10. Dynamic characteristics Table 7. Dynamic cha racteristics GND = 0 V; For test circuit see Figure12. Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ[1] Max Min Max Min Max 74AHC123A t propagation nA and nB to nQ and nQ; [2] pd delay seeFigure7 V = 3.0 V to 3.6 V CC C =15pF - 7.4 20.6 1.0 24.0 1.0 26.0 ns L C =50pF - 10.5 24.1 1.0 27.5 1.0 30.0 ns L V = 4.5 V to 5.5 V CC C =15pF - 5.1 12.0 1.0 14.0 1.0 15.5 ns L C =50pF - 7.3 14.0 1.0 16.0 1.0 17.5 ns L nRD to nQ and nQ; [2] seeFigure7 V = 3.0 V to 3.6 V CC C =15pF - 8.2 22.4 1.0 26.0 1.0 28.0 ns L C =50pF - 11.7 25.9 1.0 29.5 1.0 32.0 ns L V = 4.5 V to 5.5 V CC C =15pF - 5.6 12.9 1.0 15.0 1.0 16.5 ns L C =50pF - 8.1 14.9 1.0 17.0 1.0 19.0 ns L nRD to nQ and nQ (reset); [2] see Figure7 V = 3.0 V to 3.6 V CC C =15pF - 6.4 15.8 1.0 18.5 1.0 20.0 ns L C =50pF - 9.2 19.3 1.0 22.0 1.0 24.5 ns L V = 4.5 V to 5.5 V CC C =15pF - 4.4 9.4 1.0 11.0 1.0 12.0 ns L C =50pF - 6.3 11.4 1.0 13.0 1.0 14.5 ns L 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 9 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset Table 7. Dynamic characteristics …continued GND = 0 V; For test circuit see Figure12. Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ[1] Max Min Max Min Max t pulse width inputs; nA=LOW; W seeFigure7 V = 3.0V to 3.6V 5.0 - - 5.0 - 5.0 - ns CC V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC inputs; nB=HIGH; seeFigure7 V = 3.0V to 3.6V 5.0 - - 5.0 - 5.0 - ns CC V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC inputs; nRD = LOW; seeFigure7 V = 3.0V to 3.6V 5.0 - - 5.0 - 5.0 - ns CC V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC outputs; nQ = LOW and [3] nQ= HIGH; C =50pF; L seeFigure7, Figure8, Figure9 and Figure10 C = 28 pF; R =2k EXT EXT V = 3.0V to 3.6V - 115 240 - 300 - 300 ns CC V = 4.5V to 5.5V - 100 200 - 240 - 240 ns CC C = 0.01 F; EXT R =10k EXT V = 3.0 V to 3.6 V 90 100 110 90 110 85 115 s CC V = 4.5 V to 5.5 V 90 100 110 90 110 85 115 s CC C = 0.1 F; EXT R =10k; EXT V = 3.0V to 3.6V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms CC V = 4.5V to 5.5V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms CC t retrigger nA to nB; C = 100 pF; rtrig EXT time R =1k; C =50pF; EXT L seeFigure8 and Figure10 V = 3.0V to 3.6V - 60 - - - - - ns CC V = 4.5V to 5.5V - 39 - - - - - ns CC nA to nB; C = 0.01 F; EXT R =1k; C =50pF; EXT L seeFigure8 and Figure10 V = 3.0V to 3.6V - 1.5 - - - - - s CC V = 4.5V to 5.5V - 1.2 - - - - - s CC C power C =50pF; f = 1 MHz; [4] - 57 - - - - - pF PD L i dissipation V =GNDtoV I CC capacitance 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 10 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset Table 7. Dynamic characteristics …continued GND = 0 V; For test circuit see Figure12. Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ[1] Max Min Max Min Max 74AHCT123A t propagation nA and nB to nQ and nQ; [2] pd delay seeFigure7 V = 4.5 V to 5.5 V CC C =15pF - 5.0 12.0 1.0 14.0 1.0 15.5 ns L C =50pF - 7.1 14.0 1.0 16.0 1.0 17.5 ns L nRD to nQ and nQ; [2] seeFigure7 V = 4.5 V to 5.5 V CC C =15pF - 5.2 12.9 1.0 15.0 1.0 16.5 ns L C =50pF - 7.5 14.9 1.0 17.0 1.0 18.5 ns L nRD to nQ and nQ (reset); [2] see Figure7 V = 4.5 V to 5.5 V CC C =15pF - 4.7 9.4 1.0 11.0 1.0 12.0 ns L C =50pF - 6.7 11.4 1.0 13.0 1.0 14.5 ns L t pulse width inputs; nA=LOW; W C =50pF; seeFigure7 L V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC inputs; nB=HIGH; C =50pF; seeFigure7 L V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC inputs; nRD = LOW; C =50pF; seeFigure7 L V = 4.5V to 5.5V 5.0 - - 5.0 - 5.0 - ns CC outputs; nQ = LOW and [3] nQ= HIGH; C =50pF; L C = 28 pF; R =2k; EXT EXT seeFigure7, Figure8, Figure9 and Figure10 V = 4.5V to 5.5V - 100 200 - 240 - 240 ns CC C = 0.01 F; EXT R =10k EXT V = 4.5V to 5.5V 90 100 110 90 110 85 115 s CC C = 0.1 F; EXT R =10k EXT V = 4.5V to 5.5V 0.9 1 1.1 0.9 1.1 0.85 1.15 ms CC 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 11 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset Table 7. Dynamic characteristics …continued GND = 0 V; For test circuit see Figure12. Symbol Parameter Conditions 25 C 40C to+85 C 40C to+125 C Unit Min Typ[1] Max Min Max Min Max t retrigger nA to nB; C = 100 pF; rtrig EXT time R =1k; C =50pF; EXT L seeFigure8 and Figure10 V = 4.5V to 5.5V - 60 - - - - - ns CC nA to nB; C = 0.01 F; EXT R =1k; C =50pF; EXT L seeFigure8 and Figure10 V = 4.5V to 5.5V - 1.5 - - - - - s CC C power C =50pF; f = 1 MHz; [4] - 58 - - - - - pF PD L i dissipation V =GNDtoV I CC capacitance External components R external V = 2.0 V 5 - - - - - - k EXT CC resistance V >3.0 V 1 - - - - - - k CC C external V = 2.0 V [5] - - - - - - - pF EXT CC capacitance V >3.0 V [5] - - - - - - - pF CC [1] Typical values are measured at nominal supply voltage (V = 3.3V and V = 5.0V). CC CC [2] tpd is the same as tPLH and tPHL; CEXT = 0 pF; REXT=5 k. [3] For CEXT 10 nF the typical value of the pulse width tW (s) = CEXT (nF)  REXT (k). [4] CPDis used to determine the dynamic power dissipation PD(W). PD=CPDVCC2fi+(CLVCC2fo)where: f =input frequency in MHz; i f =output frequency in MHz; o C =output load capacitance in pF; L V =supply voltage in V. CC [5] C has no limits. EXT 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 12 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 11. Waveforms nB input VM (nA LOW) tW nA input VM (nB HIGH) tW RESET nRD input VM tPLH tPLH tW nQ output VM tPHL tPLH tW tW nQ output VM tPHL tPHL tPLH tPHL 001aae528 Measurement points are given in Table8. Fig 7. Propagation delay input (nA, nB, nRD) to output (nQ, nQ) Table 8. Measuremen t points Type Input Output V V M M 74AHC123A 0.5V 0.5V CC CC 74AHCT123A 1.5V 0.5V CC nB input tW nA input trtrig tW nQ output tW tW 001aae526 nRD = HIGH Fig 8. Output pulse control using retrigger pulse 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 13 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset nB input nRD input nQ output tW tW 001aae527 nA = LOW Fig 9. Output pulse control using reset input nRD trt nA input nB input nRD input nREXT/CEXT nQ output nQ output tW tW tW + trt 001aah086 Fig 10. Input and output timing 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 14 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset VCC REXT CEXT to nCEXT to nREXT/CEXT (pin 14 or 6) (pin 15 or 7) mna519 Fig 11. Timing component connections tW VI 90 % negative pulse VM VM 10 % 0 V tf tr tr tf VI 90 % positive pulse VM VM 10 % 0 V tW VCC VCC VI VO RL S1 G DUT open RT CL 001aad983 Test data is given in Table9. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator CL = Load capacitance including jig and probe capacitance RL = Load resistor S1 = Test selection switch Fig 12. Load circuitry for switching times Table 9. Test data Type Input Load S1 position V t, t C R t , t t , t t , t I r f L L PHL PLH PZH PHZ PZL PLZ 74AHC123A V 3.0ns 15pF, 50pF 1k open GND V CC CC 74AHCT123A 3.0V 3.0ns 15pF, 50pF 1k open GND V CC 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 15 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 12. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A1 (A 3 ) A pin 1 index θ Lp 1 8 L e w M detail X bp 0 2.5 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. A1 A2 A3 bp c D(1) E(1) e HE L Lp Q v w y Z(1) θ 0.25 1.45 0.49 0.25 10.0 4.0 6.2 1.0 0.7 0.7 mm 1.75 0.25 1.27 1.05 0.25 0.25 0.1 0.10 1.25 0.36 0.19 9.8 3.8 5.8 0.4 0.6 0.3 8o 0.010 0.057 0.019 0.0100 0.39 0.16 0.244 0.039 0.028 0.028 0o inches 0.069 0.01 0.05 0.041 0.01 0.01 0.004 0.004 0.049 0.014 0.0075 0.38 0.15 0.228 0.016 0.020 0.012 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. OUTLINE REFERENCES EUROPEAN ISSUE DATE VERSION IEC JEDEC JEITA PROJECTION 99-12-27 SOT109-1 076E07 MS-012 03-02-19 Fig 13. Package outline SOT109-1 (SO16) 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 16 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1 D E A X c y HE v M A Z 16 9 Q A2 (A 3 ) A pin 1 index A1 θ Lp L 1 8 detail X w M e bp 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT mAax. A1 A2 A3 bp c D(1) E(2) e HE L Lp Q v w y Z(1) θ mm 1.1 00..1055 00..9850 0.25 00..3109 00..21 54..19 44..53 0.65 66..62 1 00..7550 00..43 0.2 0.13 0.1 00..4006 80oo Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE REFERENCES EUROPEAN ISSUE DATE VERSION IEC JEDEC JEITA PROJECTION 99-12-27 SOT403-1 MO-153 03-02-18 Fig 14. Package outline SOT403-1 (TSSOP16) 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 17 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm SOT763-1 D B A A A1 E c terminal 1 detail X index area terminal 1 e1 C index area e b v M C A B y1 C y w M C 2 7 L 1 8 Eh e 16 9 15 10 Dh X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) A(1) UNIT max. A1 b c D(1) Dh E(1) Eh e e1 L v w y y1 0.05 0.30 3.6 2.15 2.6 1.15 0.5 mm 1 0.2 0.5 2.5 0.1 0.05 0.05 0.1 0.00 0.18 3.4 1.85 2.4 0.85 0.3 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. OUTLINE REFERENCES EUROPEAN ISSUE DATE VERSION IEC JEDEC JEITA PROJECTION 02-10-17 SOT763-1 - - - MO-241 - - - 03-01-27 Fig 15. Package outline SOT763-1 (DHVQFN16) 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 18 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 13. Abbreviations Table 10. Abbreviation s Acronym Description CDM Charged-Device Model CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 14. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes 74AHC_AHCT123A v.4 20111108 Product data sheet - 74AHC_AHCT123A v.3 Modifications: • Legal pages updated. 74AHC_AHCT123A v.3 20110908 Product data sheet - 74AHC_AHCT123A v.2 74AHC_AHCT123A v.2 20080118 Product data sheet - 74AHC_AHCT123A v.1 74AHC_AHCT123A v.1 20000315 Product specification - - 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 19 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 15. Legal information 15.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URLhttp://www.nexperia.com. 15.2 Definitions malfunction of a Nexperia product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Nexperia accepts no liability for inclusion and/or use of Draft — The document is a draft version only. The content is still under Nexperia products in such equipment or applications and internal review and subject to formal approval, which may result in therefore such inclusion and/or use is at the customer’s own risk. modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of Applications — Applications that are described herein for any of these information included herein and shall have no liability for the consequences of products are for illustrative purposes only. Nexperia makes no use of such information. representation or warranty that such applications will be suitable for the specified use without further testing or modification. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended Customers are responsible for the design and operation of their applications for quick reference only and should not be relied upon to contain detailed and and products using Nexperia products, and Nexperia full information. For detailed and full information see the relevant full data accepts no liability for any assistance with applications or customer product sheet, which is available on request via the local Nexperia sales design. It is customer’s sole responsibility to determine whether the Nexperia office. In case of any inconsistency or conflict with the short data sheet, the product is suitable and fit for the customer’s applications and full data sheet shall prevail. products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate Product specification — The information and data provided in a Product design and operating safeguards to minimize the risks associated with their data sheet shall define the specification of the product as agreed between applications and products. Nexperia and its customer, unless Nexperia and Nexperia does not accept any liability related to any default, customer have explicitly agreed otherwise in writing. In no event however, damage, costs or problem which is based on any weakness or default in the shall an agreement be valid in which the Nexperia product is customer’s applications or products, or the application or use by customer’s deemed to offer functions and qualities beyond those described in the third party customer(s). Customer is responsible for doing all necessary Product data sheet. testing for the customer’s applications and products using Nexperia products in order to avoid a default of the applications and 15.3 Disclaimers the products or of the application or use by customer’s third party customer(s). Nexperia does not accept any liability in this respect. Limited warranty and liability — Information in this document is believed to Limiting values — Stress above one or more limiting values (as defined in be accurate and reliable. However, Nexperia does not give any the Absolute Maximum Ratings System of IEC60134) will cause permanent representations or warranties, expressed or implied, as to the accuracy or damage to the device. Limiting values are stress ratings only and (proper) completeness of such information and shall have no liability for the operation of the device at these or any other conditions above those given in consequences of use of such information. the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or In no event shall Nexperia be liable for any indirect, incidental, repeated exposure to limiting values will permanently and irreversibly affect punitive, special or consequential damages (including - without limitation - lost the quality and reliability of the device. profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such Terms and conditions of commercial sale — Nexperia damages are based on tort (including negligence), warranty, breach of products are sold subject to the general terms and conditions of commercial contract or any other legal theory. sale, as published at http://www.nexperia.com/profile/terms, unless otherwise Notwithstanding any damages that customer might incur for any reason agreed in a valid written individual agreement. In case an individual whatsoever, Nexperia’s aggregate and cumulative liability towards agreement is concluded only the terms and conditions of the respective customer for the products described herein shall be limited in accordance agreement shall apply. Nexperia hereby expressly objects to with the Terms and conditions of commercial sale of Nexperia. applying the customer’s general terms and conditions with regard to the purchase of Nexperia products by customer. Right to make changes — Nexperia reserves the right to make changes to information published in this document, including without No offer to sell or license — Nothing in this document may be interpreted or limitation specifications and product descriptions, at any time and without construed as an offer to sell products that is open for acceptance or the grant, notice. This document supersedes and replaces all information supplied prior conveyance or implication of any license under any copyrights, patents or to the publication hereof. other industrial or intellectual property rights. Suitability for use — Nexperia products are not designed, Export control — This document as well as the item(s) described herein authorized or warranted to be suitable for use in life support, life-critical or may be subject to export control regulations. Export might require a prior safety-critical systems or equipment, nor in applications where failure or authorization from competent authorities. 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 20 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset Non-automotive qualified products — Unless this data sheet expressly Nexperia’s specifications such use shall be solely at customer’s states that this specific Nexperia product is automotive qualified, own risk, and (c) customer fully indemnifies Nexperia for any the product is not suitable for automotive use. It is neither qualified nor tested liability, damages or failed product claims resulting from customer design and in accordance with automotive testing or application requirements. Nexperia use of the product for automotive applications beyond Nexperia’s accepts no liability for inclusion and/or use of standard warranty and Nexperia’s product specifications. non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in 15.4 Trademarks automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia’s warranty of the Notice: All referenced brands, product names, service names and trademarks product for such automotive applications, use and specifications, and (b) are the property of their respective owners. whenever customer uses the product for automotive applications beyond 16. Contact information For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com 74AHC_AHCT123A All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 — 8 November 2011 21 of 22

74AHC123A; 74AHCT123A Nexperia Dual retriggerable monostable multivibrator with reset 17. Contents 1 General description. . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2 4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 5 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 Functional description . . . . . . . . . . . . . . . . . . . 6 7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 6 8 Recommended operating conditions. . . . . . . . 7 9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 7 10 Dynamic characteristics. . . . . . . . . . . . . . . . . . 9 11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 16 13 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 19 14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 19 15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 20 15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 20 15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 20 15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 21 16 Contact information. . . . . . . . . . . . . . . . . . . . . 21 17 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 © Nexperia B.V. 2017. All rights reserved For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 08 November 2011