NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 FEATURES NA556...D OR N PACKAGE • TwoPrecisionTimingCircuitsPerPackage NE556...D,N,OR NS PACKAGE • AstableorMonostableOperation SA556...D OR NPACKAGE SE556...J PACKAGE • TTL-CompatibleOutputCanSinkorSource (TOPVIEW) upto150mA • ActivePulluporPulldown 1DISCH 1 14 VCC • DesignedtoBeInterchangeableWith 1THRES 2 13 2DISCH SigneticsNE556,SA556,andSE556 1CONT 3 12 2THRES 1RESET 4 11 2CONT APPLICATIONS 1OUT 5 10 2RESET • PrecisionTimersFromMicrosecondsto 1TRIG 6 9 2OUT Hours GND 7 8 2TRIG • Pulse-ShapingCircuits • Missing-PulseDetectors • Tone-BurstGenerators • Pulse-WidthModulators • Pulse-PositionModulators • SequentialTimers • PulseGenerators • FrequencyDividers • ApplicationTimers • IndustrialControls • Touch-ToneEncoders DESCRIPTION/ORDERING INFORMATION These devices provide two independent timing circuits of the NA555, NE555, SA555, or SE555 type in each package. These circuits can be operated in the astable or the monostable mode with external resistor-capacitor (RC) timing control. The basic timing provided by the RC time constant can be controlled actively by modulating thebiasofthecontrol-voltageinput. The threshold (THRES) and trigger (TRIG) levels normally are two-thirds and one-third, respectively, of V . CC These levels can be altered by using the control voltage (CONT) terminal. When the trigger input falls below trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset, and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset and the output goes low. When the output is low, a low-impedance path is provided between the discharge(DISCH)terminalandground(GND). Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet. PRODUCTIONDATAinformationiscurrentasofpublicationdate. Copyright©1978–2006,TexasInstrumentsIncorporated Products conform to specifications per the terms of the Texas On products compliant to MIL-PRF-38535, all parameters are Instruments standard warranty. Production processing does not testedunlessotherwisenoted.Onallotherproducts,production necessarilyincludetestingofallparameters. processingdoesnotnecessarilyincludetestingofallparameters.

NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 ORDERINGINFORMATION V (MAX) T T PACKAGE(1) ORDERABLEPARTNUMBER TOP-SIDEMARKING A V =15V CC PDIP–N Tubeof25 NE556N NE556N Tubeof50 NE556D 0(cid:176) Cto70(cid:176) C 11.2V SOIC–D NE556 Reelof2500 NE556DR SOP–NS Reelof2000 NE556NSR NE556 –40(cid:176) Cto85(cid:176) C 11.2V PDIP–N Tubeof25 SA556N SA556N PDIP–N Tubeof25 NA556N NA556N –40(cid:176) Cto105(cid:176) C 11.2V Tubeof50 NA556D SOIC–D NA556 Reelof2500 NA556DR SE556J SE556J –55(cid:176) Cto125(cid:176) C 10.6V CDIP–J Tubeof25 SE556JB SE556JB (1) Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat www.ti.com/sc/package. FUNCTIONTABLE (eachtimer) TRIGGER THRESHOLD DISCHARGE RESET OUTPUT VOLTAGE(1) VOLTAGE(1) SWITCH Low Irrelevant Irrelevant Low On High <1/3V Irrelevant High Off DD High >1/3V >2/3V Low On DD DD High >1/3V <2/3V Aspreviouslyestablished DD DD (1) Voltagelevelsshownarenominal. FUNCTIONALBLOCKDIAGRAM,EACHTIMER VCC RESET THRES OUT CONT TRIG DISCH GND RESET can overrideTRIG,which can overrideTHRES. 2 SubmitDocumentationFeedback

NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 Absolute Maximum Ratings(1) overoperatingfree-airtemperaturerange(unlessotherwisenoted) MIN MAX UNIT V Supplyvoltage(2) 18 V CC V Inputvoltage CONT,RESET,THRES,andTRIG V V I CC I Outputcurrent – 225 mA O Dpackage 86 q Packagethermalimpedance(3)(4) Npackage 80 (cid:176) C/W JA NSpackage 76 q Packagethermalimpedance(5)(6) Jpackage 15.05 (cid:176) C/W JC T Operatingvirtualjunctiontemperature 150 (cid:176) C J Leadtemperature1,6mm(1/16in)fromcasefor60s Jpackage 300 (cid:176) C Leadtemperature1,6mm(1/16in)fromcasefor10s D,N,orNSpackage 260 (cid:176) C T Storagetemperaturerange –65 150 (cid:176) C stg (1) Stressesbeyondthoselistedunder"absolutemaximumratings"maycausepermanentdamagetothedevice.Thesearestressratings only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder"recommendedoperating conditions"isnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability. (2) Allvoltagevaluesarewithrespecttonetworkgroundterminal. (3) MaximumpowerdissipationisafunctionofT(max),q ,andT .Themaximumallowablepowerdissipationatanyallowableambient J JA A temperatureisP =(T(max)–T )/q .OperatingattheabsolutemaximumT of150(cid:176) Ccanaffectreliability. D J A JA J (4) ThepackagethermalimpedanceiscalculatedinaccordancewithJESD51-7. (5) MaximumpowerdissipationisafunctionofT(max),q ,andT .Themaximumallowablepowerdissipationatanyallowablecase J JC C temperatureisP =(T(max)–T )/q .OperatingattheabsolutemaximumT of150(cid:176) Ccanaffectreliability. D J C JC J (6) ThepackagethermalimpedanceiscalculatedinaccordancewithMIL-STD-883. Recommended Operating Conditions MIN MAX UNIT NA556,NE556,SA556 4.5 16 V Supplyvoltage V CC SE556 4.5 18 V Inputvoltage CONT,RESET,THRES,andTRIG V V I CC I Outputcurrent – 200 mA O NA556 –40 105 NE556 0 70 T Operatingfree-airtemperature (cid:176) C A SA556 –40 85 SE556 –55 125 SubmitDocumentationFeedback 3

NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 Electrical Characteristics V =5Vto15V,T =25(cid:176) C(unlessotherwisenoted) CC A NA556 NE556 SE556 PARAMETER TESTCONDITIONS SA556 UNIT MIN TYP MAX MIN TYP MAX Thresholdvoltage VCC=15V 8.8 10 11.2 9.4 10 10.6 V V T level V =5V 2.4 3.3 4.2 2.7 3.3 4 CC I Thresholdcurrent(1) 30 250 30 250 nA T 4.5 5 5.6 4.8 5 5.2 V =15V CC T =–55(cid:176) Cto125(cid:176) C 3 6 A V Triggervoltagelevel V TRIG 1.1 1.67 2.2 1.45 1.67 1.9 V =5V CC T =–55(cid:176) Cto125(cid:176) C 1.9 A I Triggercurrent TRIGat0V 0.5 2 0.5 0.9 m A TRIG 0.3 0.7 1 0.3 0.7 1 V Resetvoltagelevel V RESET T =–55(cid:176) Cto125(cid:176) C 1.1 A RESETatV 0.1 0.4 0.1 0.4 CC I Resetcurrent mA RESET RESETat0V –0.4 1.5 –0.4 –1 Dischargeswitch I 20 100 20 100 nA DISCH off-statecurrent 9 10 11 9.6 10 10.4 V =15V Controlvoltage CC TA=–55(cid:176) Cto125(cid:176) C 9.6 10.4 V V CONT (opencircuit) 2.6 3.3 4 2.9 3.3 3.8 V =5V CC T =–55(cid:176) Cto125(cid:176) C 2.9 3.8 A V =15V, 0.1 0.25 0.1 0.15 CC IOL=10mA TA=–55(cid:176) Cto125(cid:176) C 0.2 V =15V, 0.4 0.75 0.4 0.5 CC IOL=50mA TA=–55(cid:176) Cto125(cid:176) C 1 V =15V, 2 2.5 2 2.2 CC V Low-level IOL=100mA TA=–55(cid:176) Cto125(cid:176) C 2.7 V OL outputvoltage V =15V,I =200mA 2.5 2.5 CC OL VCC=5V, T =–55(cid:176) Cto125(cid:176) C 0.35 I =3.5mA A OL V =5V, 0.1 0.25 0.1 0.15 CC IOL=5mA TA=–55(cid:176) Cto125(cid:176) C 0.8 V =5V,I =8mA 0.15 0.3 0.15 0.25 CC OL V =15V, 12.75 13.3 13 13.3 CC IOH=–100mA TA=–55(cid:176) Cto125(cid:176) C 12 High-level V V =15V,I =–200mA 12.5 12.5 V OH outputvoltage CC OH V =5V, 2.75 3.3 3 3.3 CC IOH=–100mA TA=–55(cid:176) Cto125(cid:176) C 2 Outputlow, VCC=15V 20 30 20 24 Noload V =5V 6 12 6 10 CC I Supplycurrent mA CC Outputhigh, VCC=15V 18 26 18 20 Noload V =5V 4 10 4 8 CC (1) ThisparameterinfluencesthemaximumvalueofthetimingresistorsRandR inthecircuitofFigure1.Forexample,whenV =5V, B CC themaximumvalueisR=R +R » 3.4MW ,andforV =15V,themaximumvalueis» 10MW . A B CC 4 SubmitDocumentationFeedback

NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 Operating Characteristics V =5Vand15V CC NA556 TEST NE556 SE556 PARAMETER CONDITIONS(1) SA556 UNIT MIN TYP MAX MIN TYP MAX Eachtimer, 1 3 0.5 1.5(4) monostable(3) Initialerroroftiming T =25(cid:176) C interval(2) Eachtimer,astable(5) A 2.25% 1.5% Timer1–Timer2 – 1 – 0.5 Eachtimer, 50 30 100(4) Temperature monostable(3) coefficientoftiming T =MINtoMAX ppm/(cid:176) C Eachtimer,astable(5) A 150 90 interval Timer1–Timer2 – 10 – 10 Eachtimer, 0.1 0.5 0.05 0.2(4) Supplyvoltage monostable(3) sensitivityoftiming T =25(cid:176) C %/V Eachtimer,astable(5) A 0.3 0.15 interval Timer1–Timer2 – 0.2 – 0.1 C =15pF, Output-pulserisetime TL=25(cid:176) C 100 300 100 200(4) ns A C =15pF, Output-pulsefalltime TL=25(cid:176) C 100 300 100 200(4) ns A (1) ForconditionsshownasMINorMAX,usetheappropriatevaluespecifiedunderrecommendedoperatingconditions. (2) Timing-intervalerrorisdefinedasthedifferencebetweenthemeasuredvalueandtheaveragevalueofarandomsamplefromeach processrun. (3) ValuesspecifiedareforadeviceinamonostablecircuitsimilartoFigure2,withthefollowingcomponentvalues:R =2kW to100kW , A C=0.1m F. (4) OnproductscomplianttoMIL-PRF-38535,thisparameterisnotproductiontested. (5) ValuesspecifiedareforadeviceinanastablecircuitsimilartoFigure1,withthefollowingcomponentvalues:R =1kW to100kW , A C=0.1m F. SubmitDocumentationFeedback 5

NA556, NE556, SA556, SE556 DUAL PRECISION TIMERS www.ti.com SLFS023G–APRIL1978–REVISEDJUNE2006 APPLICATION INFORMATION VCC VCC (5V to 15V) (5V to 15V) Open (see Note A) 0.01 µF RA CONT VCC RA CONT VCC RESET RL DISCH RESET RL OUT OUT DISCH RB OUT OUT THRES TRIG THRES GND Input TRIG GND C C NOTE A: Bypassing the control-voltage input to ground with a capacitor might improve operation.This should be evaluated for individual applications. Figure1.CircuitforAstableOperation Figure2.CircuitforMonostableOperation 6 SubmitDocumentationFeedback

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) JM38510/10902BCA ACTIVE CDIP J 14 1 TBD Call TI N / A for Pkg Type -55 to 125 JM38510 /10902BCA M38510/10902BCA ACTIVE CDIP J 14 1 TBD Call TI N / A for Pkg Type -55 to 125 JM38510 /10902BCA NA556D ACTIVE SOIC D 14 50 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 105 NA556 & no Sb/Br) NA556DR ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 105 NA556 & no Sb/Br) NA556N ACTIVE PDIP N 14 25 Green (RoHS NIPDAU N / A for Pkg Type -40 to 105 NA556N & no Sb/Br) NE556D ACTIVE SOIC D 14 50 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 NE556 & no Sb/Br) NE556DBR ACTIVE SSOP DB 14 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 N556 & no Sb/Br) NE556DR ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 NE556 & no Sb/Br) NE556DRE4 ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 NE556 & no Sb/Br) NE556DRG4 ACTIVE SOIC D 14 2500 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 NE556 & no Sb/Br) NE556N ACTIVE PDIP N 14 25 Green (RoHS NIPDAU N / A for Pkg Type 0 to 70 NE556N & no Sb/Br) NE556NE4 ACTIVE PDIP N 14 25 Green (RoHS NIPDAU N / A for Pkg Type 0 to 70 NE556N & no Sb/Br) NE556NSR ACTIVE SO NS 14 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM 0 to 70 NE556 & no Sb/Br) SA556N ACTIVE PDIP N 14 25 Green (RoHS NIPDAU N / A for Pkg Type -40 to 85 SA556N & no Sb/Br) SA556NE4 ACTIVE PDIP N 14 25 Green (RoHS NIPDAU N / A for Pkg Type -40 to 85 SA556N & no Sb/Br) SE556J ACTIVE CDIP J 14 1 TBD Call TI N / A for Pkg Type -55 to 125 SE556J SE556JB ACTIVE CDIP J 14 1 TBD Call TI N / A for Pkg Type -55 to 125 SE556JB Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 (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. 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. Addendum-Page 2

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) NA556DR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 NE556DR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 NE556NSR SO NS 14 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 20-Dec-2018 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) NA556DR SOIC D 14 2500 367.0 367.0 38.0 NE556DR SOIC D 14 2500 367.0 367.0 38.0 NE556NSR SO NS 14 2000 367.0 367.0 38.0 PackMaterials-Page2

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PACKAGE OUTLINE J0014A CDIP - 5.08 mm max height SCALE 0.900 CERAMIC DUAL IN LINE PACKAGE PIN 1 ID A 4X .005 MIN (OPTIONAL) [0.13] .015-.060 TYP [0.38-1.52] 1 14 12X .100 [2.54] 14X .014-.026 14X .045-.065 [0.36-0.66] [1.15-1.65] .010 [0.25] C A B .754-.785 [19.15-19.94] 7 8 B .245-.283 .2 MAX TYP .13 MIN TYP [6.22-7.19] [5.08] [3.3] SEATING PLANE C .308-.314 [7.83-7.97] AT GAGE PLANE .015 GAGE PLANE [0.38] 0 -15 14X .008-.014 TYP [0.2-0.36] 4214771/A 05/2017 NOTES: 1. All controlling linear dimensions are in inches. Dimensions in brackets are in millimeters. Any dimension in brackets or parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This package is hermitically sealed with a ceramic lid using glass frit. 4. Index point is provided on cap for terminal identification only and on press ceramic glass frit seal only. 5. Falls within MIL-STD-1835 and GDIP1-T14. www.ti.com

EXAMPLE BOARD LAYOUT J0014A CDIP - 5.08 mm max height CERAMIC DUAL IN LINE PACKAGE (.300 ) TYP [7.62] SEE DETAIL B SEE DETAIL A 1 14 12X (.100 ) [2.54] SYMM 14X ( .039) [1] 7 8 SYMM LAND PATTERN EXAMPLE NON-SOLDER MASK DEFINED SCALE: 5X .002 MAX (.063) [0.05] [1.6] METAL ALL AROUND ( .063) SOLDER MASK [1.6] OPENING METAL .002 MAX SOLDER MASK (R.002 ) TYP [0.05] OPENING [0.05] ALL AROUND DETAIL A DETAIL B SCALE: 15X 13X, SCALE: 15X 4214771/A 05/2017 www.ti.com

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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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IMPORTANTNOTICEANDDISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated