74AHC123A-Q100; 74AHCT123A-Q100

Dual retriggerable monostable multivibrator with reset

The 74AHC123A-Q100; 74AHCT123A-Q100 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (REXT and CEXT). Once triggered this basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or (nB). By repeating 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. Inputs are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Wide supply voltage range from 2.0 V to 5.5 V
  • DC triggered from active HIGH or active LOW inputs
  • Retriggerable for very long pulses up to 100 % duty factor
  • Direct reset terminates output pulse
  • Overvoltage tolerant inputs to 5.5 V
  • All inputs have a Schmitt-trigger action
  • High noise immunity
  • Input levels:
    • For 74AHC123A-Q100: CMOS level
    • For 74AHCT123A-Q100: TTL level
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
  • Multiple package options
  • DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC123ABQ-Q100Production2.0 - 5.5CMOS± 85.1low-40~1259414.463DHVQFN16
74AHC123AD-Q100Production2.0 - 5.5CMOS± 85.1low-40~1259310.153SO16
74AHC123APW-Q100Production2.0 - 5.5CMOS± 85.1low-40~1251264.855.7TSSOP16
74AHCT123ABQ-Q100Production4.5 - 5.5TTL± 85low-40~1259414.463DHVQFN16
74AHCT123AD-Q100Production4.5 - 5.5TTL± 85low-40~1259310.153SO16
74AHCT123APW-Q100Production4.5 - 5.5TTL± 85low-40~1251264.855.7TSSOP16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 7” Q1/T1 or Q2/T3ActiveAC123A74AHC123ABQ-Q100X
( 9353 009 86115 )
Reel 13" Q1/T1Active74AHC123AD74AHC123AD-Q100J
( 9353 009 74118 )
Reel 13" Q1/T1ActiveAHC123A74AHC123APW-Q100J
( 9353 009 85118 )
Reel 7” Q1/T1 or Q2/T3ActiveAT123A74AHCT123ABQ-Q100X
( 9353 009 88115 )
Reel 13" Q1/T1Active74AHCT123AD74AHCT123AD-Q100J
( 9353 009 75118 )
Reel 13" Q1/T1ActiveAHT123A74AHCT123APW-Q100J
( 9353 009 87118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74AHC123ABQ-Q10074AHC123ABQ-Q100X74AHC123ABQ-Q100Always Pb-free30.00.81.42E911
74AHC123AD-Q10074AHC123AD-Q100J74AHC123AD-Q100Always Pb-free30.00.81.42E911
74AHC123APW-Q10074AHC123APW-Q100J74AHC123APW-Q100Always Pb-free30.00.81.42E911
74AHCT123ABQ-Q10074AHCT123ABQ-Q100X74AHCT123ABQ-Q100Always Pb-free30.00.81.42E911
74AHCT123AD-Q10074AHCT123AD-Q100J74AHCT123AD-Q100Always Pb-free30.00.81.42E911
74AHCT123APW-Q10074AHCT123APW-Q100J74AHCT123APW-Q100Always Pb-free30.00.81.42E911
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
74AHC_AHCT123A_Q100Dual retriggerable monostable multivibrator with resetData sheet2020-06-17
ahct123aahct123a IBIS modelIBIS model2013-04-08
ahc123aahc123a IBIS modelIBIS model2013-04-08
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08


Find answers to your design questions on this page. If available you can find information in our Nexperia Support Community or you can find Nexperia models and Design tools.


File nameTitleTypeDate
ahct123aahct123a IBIS modelIBIS model2013-04-08
ahc123aahc123a IBIS modelIBIS model2013-04-08


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