SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 (cid:0) Inputs Are TTL-Voltage Compatible SN54AHCT123A...J OR W PACKAGE (cid:0) SN74AHCT123A...D, DB, DGV, N, OR PW PACKAGE Schmitt-Trigger Circuitry On A, B, and CLR (TOP VIEW) Inputs for Slow Input Transition Rates (cid:0) Edge Triggered From Active-High or 1A 1 16 VCC Active-Low Gated Logic Inputs 1B 2 15 1Rext/Cext (cid:0) Retriggerable for Very Long Output Pulses 1CLR 3 14 1Cext (cid:0) 1Q 4 13 1Q Overriding Clear Terminates Output Pulse (cid:0) 2Q 5 12 2Q Latch-Up Performance Exceeds 100 mA Per 2Cext 6 11 2CLR JESD 78, Class II 2R /C 7 10 2B (cid:0) ext ext ESD Protection Exceeds JESD 22 GND 8 9 2A – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) SN54AHCT123A...FK PACKAGE (TOP VIEW) description/ordering information xt e C These edge-triggered multivibrators feature / xt output pulse-duration control by three methods. In B A C CCRe the first method, the A input is low, and the B input 1 1 N V 1 goes high. In the second method, the B input is 3 2 1 20 19 high, and the A input goes low. In the third method, 1CLR 4 18 1Cext the A input is low, the B input is high, and the clear 1Q 5 17 1Q (CLR) input goes high. NC 6 16 NC 2Q 7 15 2Q The output pulse duration is programmed by 2Cext 8 14 2CLR selecting external resistance and capacitance 9 10 1112 13 values. The external timing capacitor must be xtD C AB connected between Cext and Rext/Cext (positive) CeGN N 22 and an external resistor connected between /xt e Rext/Cext and VCC. To obtain variable pulse R 2 durations, connect an external variable resistance between R /C and V . The output pulse NC – No internal connection ext ext CC duration also can be reduced by taking CLR low. ORDERING INFORMATION ORDERABLE TOP-SIDE TA PACKAGE† PART NUMBER MARKING PDIP – N Tube SN74AHCT123AN SN74AHCT123AN Tube SN74AHCT123AD SSOOIICC – DD AAHHCCTT112233AA Tape and reel SN74AHCT123ADR –4400°°CC ttoo 8855°°CC SSOP – DB Tape and reel SN74AHCT123ADBR HB123A TSSOP – PW Tape and reel SN74AHCT123APWR HB123A TVSOP – DGV Tape and reel SN74AHCT123ADGVR HB123A CDIP – J Tube SNJ54AHCT123AJ SNJ54AHCT123AJ –55°C to 125°C CFP – W Tube SNJ54AHCT123AW SNJ54AHCT123AW LCCC – FK Tube SNJ54AHCT123AFK SNJ54AHCT123AFK †Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright  2003, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments On products compliant to MIL-PRF-38535, all parameters are tested standard warranty. Production processing does not necessarily include unless otherwise noted. On all other products, production testing of all parameters. processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 description/ordering information(continued) Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A, B, and CLR inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs. Once triggered, the basic pulse duration can be extended by retriggering the gated low-level-active (A) or high-level-active (B) input. Pulse duration can be reduced by taking CLR low. CLR input can be used to override A or B inputs. The input/output timing diagram illustrates pulse control by retriggering the inputs and early clearing. The variance in output pulse duration from device to device typically is less than ±0.5% for given external timing components. An example of this distribution for the ’AHCT123A is shown in Figure 10. Variations in output pulse duration versus supply voltage and temperature are shown in Figure 6. During power up, Q outputs are in the low state, and Q outputs are in the high state. The outputs are glitch free, without applying a reset pulse. For additional application information on multivibrators, see the application report, Designing With the SN74AHC123A and SN74AHCT123A, literature number SCLA014. FUNCTION TABLE (each multivibrator) INPUTS OUTPUTS CLR A B Q Q L X X L H X H X L† H† X X L L† H† H L ↑ H (cid:0) H ↑ L H †These outputs are based on the assumption that the indicated steady-state conditions at the A and B inputs have been set up long enough to complete any pulse started before the setup. logic diagram, each multivibrator (positive logic) Rext/Cext A Cext B Q CLR R Q 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 input/output timing diagram trr A B CLR Rext/Cext Q Q tw tw tw + trr absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V +0.5 V O CC Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA Continuous current through V or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA CC Package thermal impedance, θ (see Note 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W JA DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C stg †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Voltage values are with respect to the network ground terminal. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 3. The package thermal impedance is calculated in accordance with JESD 51-7. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 recommended operating conditions (see Note 4) SN54AHCT123A SN74AHCT123A UUNNIITT MIN MAX MIN MAX VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage 0 5.5 0 5.5 V VO Output voltage 0 VCC 0 VCC V IOH High-level output current –8 –8 mA IOL Low-level output current 8 8 mA Rext External timing resistance 1k 1k Ω ∆t/∆VCC Power-up ramp rate 1 1 ms/V TA Operating free-air temperature –55 125 –40 85 °C NOTE 4: Unused Rext/Cext terminals should be left unconnected. All remaining unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) TA = 25°C SN54AHCT123A SN74AHCT123A PPAARRAAMMEETTEERR TTEESSTT CCOONNDDIITTIIOONNSS VVCCCC UUNNIITT MIN TYP MAX MIN MAX MIN MAX IOH = –50 (cid:0)A 4.4 4.5 4.4 4.4 VVOOHH 44.55 VV VV IOH = –8 mA 3.94 3.8 3.8 IOL = 50 (cid:0)A 0.1 0.1 0.1 VVOOLL 44.55 VV VV IOL = 8 mA 0.36 0.5 0.44 Rext/Cext† VI = VCC or GND 5.5 V ±0.25 ±2.5 ±2.5 II A, B, VI = VCC or GND 0 V to 5.5 V ±0.1 ±1* ±1 (cid:0)A and CLR ICC Quiescent VI = VCC or GND, IO = 0 5.5 V 4 40 40 (cid:0)A Active state VI = VCC or GND, ICC (per circuit) Rext/Cext = 0.5 VCC 5.5 V 560 750 975 975 (cid:0)A One input at 3.4 V, Other ∆ICC‡ inputs at VCC or GND 5.5 V 1.35 1.5 1.5 mA Ci VI = VCC or GND 5 V 1.9 10 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. †This test is performed with the terminal in the off-state condition. ‡This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC. timing requirements over recommended operating free-air temperature range, V = 5 V ± 0.5 V CC (unless otherwise noted) (see Figure 1) TA = 25°C SN54AHCT123A SN74AHCT123A TTEESSTT CCOONNDDIITTIIOONNSS UUNNIITT MIN TYP MAX MIN MAX MIN MAX Pulse CLR 5 5 5 ttw nnss duration A or B trigger 5 5 5 Rext = 1 kΩ, Cext = 100 pF § 60 § § ns ttrr PPuullssee rreettrriiggggeerr ttiimmee Rext = 1 kΩ, Cext = 0.01 (cid:0)F § 1.5 § § (cid:0)s §See retriggering data in the application information section. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 switching characteristics over recommended operating free-air temperature range, VCC = 5 V±0.5 V (unless otherwise noted) (see Figure 1) FFRROOMM TTOO TTEESSTT TAA = 25°C SN54AHCT123A SN74AHCT123A PPPAAARRRAAAMMMEEETTTEEERRR UUUNNNIIITTT (INPUT) (OUTPUT) CONDITIONS MIN TYP MAX MIN MAX MIN MAX tPLH 5.3* 10* 1* 13* 1 11 AA or BB QQ or QQ CCLL == 1155 ppFF nnss tPHL 5.3* 10* 1* 13* 1 11 tPLH 7.7* 12* 1* 15* 1 13 CCLLRR QQ or QQ CCLL == 1155 ppFF nnss tPHL 7.7* 12* 1* 15* 1 13 tPLH 8* 13* 1* 16* 1 14 CCLLRR ttriigger QQ or QQ CCLL == 1155 ppFF nnss tPHL 8* 13* 1* 16* 1 14 tPLH 6.8 11 1 14 1 12 AA or BB QQ or QQ CCLL == 5500 ppFF nnss tPHL 6.8 11 1 14 1 12 tPLH 9.2 13 1 16 1 14 CCLLRR QQ oorr QQ CCLL == 5500 ppFF nnss tPHL 9.2 13 1 16 1 14 tPLH 9.5 14 1 17 1 15 CCLLRR ttriigger QQ or QQ CCLL == 5500 ppFF nnss tPHL 9.5 14 1 17 1 15 CL = 50 pF, Cext = 28 pF, 133 200 240 240 ns Rext = 2 kΩ CL = 50 pF, tw†† Q or Q Cext = 0.01 µF, 90 100 110 90 110 90 110 (cid:0)s Rext = 10 kΩ CL = 50 pF, Cext = 0.1 µF, 0.9 1 1.1 0.9 1.1 0.9 1.1 ms Rext = 10 kΩ ∆tw‡ ±1 % * On products compliant to MIL-PRF-38535, this parameter is not production tested. †tw = Pulse duration at Q and Q outputs ‡∆tw = Output pulse-duration variation (Q and Q) between circuits in same package operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load 29 pF POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 PARAMETER MEASUREMENT INFORMATION From Output Test tw Under Test Point 3 V CL Inputs 1.5 V 1.5 V (see Note A) 0 V VOH LOAD CIRCUIT Outputs 50% VCC 50% VCC VOL VOLTAGE WAVEFORMS 3 V PULSE DURATION Input A 1.5 V (see Note B) 0 V 3 V Input CLR Input B 3 V (see Note B) 1.5 V 1.5 V 0 V (see Note B) 1.5 V 0 V tPLH tPHL tPLH VOH In-Phase VOH InO-Puhtapsuet 50% VCC 50% VCC Output 50% VCC VOL VOL tPHL tPHL tPLH VOH VOH Out-of-Phase 50% VCC Out-of-Phase 50% VCC 50% VCC Output Output VOL VOL VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS DELAY TIMES DELAY TIMES NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: ZO = 50 Ω, tr (cid:0)3 ns, tf (cid:0) 3 ns. C. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 APPLICATION INFORMATION caution in use To prevent malfunctions due to noise, connect a high-frequency capacitor between V and GND, and keep CC the wiring between the external components and C and R /C terminals as short as possible. ext ext ext power-down considerations Large values of C may cause problems when powering down the ’AHCT123A devices because of the amount ext of energy stored in the capacitor. When a system containing this device is powered down, the capacitor may discharge from V through the protection diodes at pin 2 or pin 14. Current through the input protection diodes CC must be limited to 30 mA; therefore, the turn-off time of the V power supply must not be faster than CC t = V × C /30 mA. For example, if V = 5 V and C = 15 pF, the V supply must turn off no faster than CC ext CC ext CC t = (5 V) ×(15 pF)/30mA = 2.5 ns. Usually, this is not a problem because power supplies are heavily filtered and cannot discharge at this rate. When a more rapid decrease of V to zero occurs, the ’AHCT123A devices may CC sustain damage. To avoid this possibility, use external clamping diodes. output pulse duration The output pulse duration, t , is determined primarily by the values of the external capacitance (C ) and timing w T resistance (R ). The timing components are connected as shown in Figure 2. T VCC RT CT To Rext/Cext To Cext Terminal Terminal Figure 2. Timing-Component Connections The pulse duration is given by: tw(cid:0)K(cid:0)RT(cid:0)CT (1) if C is ≥1000 pF, K = 1.0 or T if C is < 1000 pF, K can be determined from Figure 5 T where: t = pulse duration in ns w R = external timing resistance in kΩ T C = external capacitance in pF T K = multiplier factor Equation 1 and Figure 3 can be used to determine values for pulse duration, external resistance, and external capacitance. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 APPLICATION INFORMATION retriggering data The minimum input retriggering time (t ) is the minimum time required after the initial signal before retriggering MIR the input. After t , the device retriggers the output. Experimentally, it also can be shown that to retrigger the MIR output pulse, the two adjacent input signals should be t apart, where t = 0.30 × t . The retrigger pulse MIR MIR w duration is calculated as shown in Figure 3. tMIR Input tRT = tw + tPLH = (K × RT × CT) + tPLH tPLH tRT Where: tw tMIR = Minimum Input Retriggering Time tPLH= Propagation Delay Output tRT = Retrigger Time tw = Output Pulse Duration Before Retriggering Figure 3. Retrigger Pulse Duration The minimum value from the end of the input pulse to the beginning of the retriggered output should be approximately 15 ns to ensure a retriggered output (see Figure 4). Input tMRT Output tMRT= Minimum Time Between the End of the Second Input Pulse and the Beginning of the Retriggered Output tMRT= 15 ns Figure 4. Input/Output Requirements 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 APPLICATION INFORMATION† 1.00E+09 VCC = 5 V TA = 25°C 1.00E+08 RT = 200k Ω 1.00E+07 s n – RT = 150k Ω n 1.00E+06 o ati Dur 1.00E+05 RT = 80k Ω RT = 10k Ω e s ul ut P 1.00E+04 p ut O– 1.00E+03 RT = 5k Ω w t 1.00E+02 RT = 1k Ω 1.00E+01 1.00E+00 1 10 102 103 104 105 106 107 CT – External Timing Capacitance – pF Figure 5. Output Pulse Duration vs External Timing Capacitance 14% tw = 866 ns at: 12% VCC = 5 V, n RT = 10 kΩ VCC = 2.5 V uratio 10% CTAT == 2550° pCF VVCCCC == 33. V5 V D 8% e VCC = 4 V s ul 6% VCC = 5 V P put 4% VCC = 6 V ut VCC = 7 V O n 2% n i o 0% ati ari –2% V –4% –6% –60 –40 –20 0 20 40 60 80 100 120 140 160 180 Temperature – °C Figure 6. Variations in Output Pulse Duration vs Temperature †Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9

SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 APPLICATION INFORMATION† MINIMUM TRIGGER TIME OUTPUT PULSE-DURATION CONSTANT vs vs V CHARACTERISTICS SUPPLY VOLTAGE CC 10.00 1.20 RT = 1 kΩ RT = 10 kΩ TA = 25°C TA = 25°C s – K 1.15 tW = K ×CT ×RT µ– CT = 0.01 µF ant me st Ti 1.00 on 1.10 um Retrigger CT = 1000 pF se-Duration C 1.05 CCTT == 100.0010 µpFF m 0.10 ul 1.00 ni P Mi ut – trr CT = 100 pF Outp 0.95 CT = 0.1 µF 0.01 0.90 0 1 2 3 4 5 6 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 VCC – Supply Voltage – V VCC – Supply Voltage – V Figure 7 Figure 8 DISTRIBUTION OF UNITS vs EXTERNAL CAPACITANCE OUTPUT PULSE DURATION vs MULTIPLIER FACTOR VCC = 5 V 0.001 TA = 25°C For Capacitor Values of ce CT = 50 pF µF 0.001 µF or Greater, an RT = 10 k(cid:0) – K = 1.0 ur ue (K is Independent of R) cc or Val y of O MMeeadnia =n 8=5 865 n6s ns cit nc Std. Dev. = 3.5 ns a e p 0.0001 u a q C e nal e Fr r v Exte elati – R CT TA = 25°C VCC = 5 V 0.00001 –3 Std. Dev. +3 Std. Dev. Median 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 99% of Data Units Multiplier Factor – K tw – Output Pulse Duration Figure 9 Figure 10 †Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) 5962-9861601Q2A ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type -55 to 125 5962- 9861601Q2A SNJ54AHCT 123AFK 5962-9861601QEA ACTIVE CDIP J 16 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-9861601QE A SNJ54AHCT123AJ 5962-9861601QFA ACTIVE CFP W 16 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-9861601QF A SNJ54AHCT123AW SN74AHCT123AD ACTIVE SOIC D 16 40 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 AHCT123A & no Sb/Br) SN74AHCT123ADBR ACTIVE SSOP DB 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 HB123A & no Sb/Br) SN74AHCT123ADGVR ACTIVE TVSOP DGV 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 HB123A & no Sb/Br) SN74AHCT123ADR ACTIVE SOIC D 16 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 AHCT123A & no Sb/Br) SN74AHCT123AN ACTIVE PDIP N 16 25 Green (RoHS NIPDAU N / A for Pkg Type -40 to 85 SN74AHCT123AN & no Sb/Br) SN74AHCT123APWR ACTIVE TSSOP PW 16 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 HB123A & no Sb/Br) SNJ54AHCT123AFK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type -55 to 125 5962- 9861601Q2A SNJ54AHCT 123AFK SNJ54AHCT123AJ ACTIVE CDIP J 16 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-9861601QE A SNJ54AHCT123AJ SNJ54AHCT123AW ACTIVE CFP W 16 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-9861601QF A SNJ54AHCT123AW (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF SN54AHCT123A, SN74AHCT123A : •Catalog: SN74AHCT123A •Military: SN54AHCT123A NOTE: Qualified Version Definitions: •Catalog - TI's standard catalog product Addendum-Page 2

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 •Military - QML certified for Military and Defense Applications Addendum-Page 3

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) SN74AHCT123ADGVR TVSOP DGV 16 2000 330.0 12.4 6.8 4.0 1.6 8.0 12.0 Q1 SN74AHCT123ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN74AHCT123APWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) SN74AHCT123ADGVR TVSOP DGV 16 2000 367.0 367.0 35.0 SN74AHCT123ADR SOIC D 16 2500 333.2 345.9 28.6 SN74AHCT123APWR TSSOP PW 16 2000 367.0 367.0 35.0 PackMaterials-Page2

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PACKAGE OUTLINE PW0016A TSSOP - 1.2 mm max height SCALE 2.500 SMALL OUTLINE PACKAGE SEATING PLANE C 6.6 TYP 6.2 A 0.1 C PIN 1 INDEX AREA 14X 0.65 16 1 2X 5.1 4.55 4.9 NOTE 3 8 9 0.30 B 4.5 16X 0.19 1.2 MAX 4.3 0.1 C A B NOTE 4 (0.15) TYP SEE DETAIL A 0.25 GAGE PLANE 0.15 0.05 0.75 0.50 0 -8 DETA 20AIL A TYPICAL 4220204/A 02/2017 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side. 5. Reference JEDEC registration MO-153. www.ti.com

EXAMPLE BOARD LAYOUT PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE: 10X SOLDER MASK METAL UNDER SOLDER MASK OPENING METAL SOLDER MASK OPENING EXPOSED METAL EXPOSED METAL 0.05 MAX 0.05 MIN ALL AROUND ALL AROUND NON-SOLDER MASK SOLDER MASK DEFINED DEFINED (PREFERRED) SOLDE15.000R MASK DETAILS 4220204/A 02/2017 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN PW0016A TSSOP - 1.2 mm max height SMALL OUTLINE PACKAGE 16X (1.5) SYMM (R0.05) TYP 1 16X (0.45) 16 SYMM 14X (0.65) 8 9 (5.8) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE: 10X 4220204/A 02/2017 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

MECHANICAL DATA MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000 DGV (R-PDSO-G**) PLASTIC SMALL-OUTLINE 24 PINS SHOWN 0,23 0,40 0,07 M 0,13 24 13 0,16 NOM 4,50 6,60 4,30 6,20 Gage Plane 0,25 0°–(cid:1)8° 0,75 1 12 0,50 A Seating Plane 0,15 1,20 MAX 0,08 0,05 PINS ** 14 16 20 24 38 48 56 DIM A MAX 3,70 3,70 5,10 5,10 7,90 9,80 11,40 A MIN 3,50 3,50 4,90 4,90 7,70 9,60 11,20 4073251/E 08/00 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion, not to exceed 0,15 per side. D. Falls within JEDEC: 24/48 Pins – MO-153 14/16/20/56 Pins – MO-194 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,65 0,15 M 0,22 28 15 0,25 0,09 5,60 8,20 5,00 7,40 Gage Plane 1 14 0,25 A 0°–(cid:1)8° 0,95 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 PINS ** 14 16 20 24 28 30 38 DIM A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 4040065/E 12/01 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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