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74AHC123APW

Dual retriggerable monostable multivibrator with reset

The 74AHC123A; 74AHCT123A 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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74AHC123APW 74AHC123APW,118 935265564118 SOT403-1 Order product

Features and benefits

  • 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: CMOS level
    • For 74AHCT123A: TTL level
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22-C101C exceeds 1000 V
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

Parametrics

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
74AHC123APWProduction2.0 - 5.5CMOS± 85.1low-40~1251264.855.7TSSOP16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74AHC123APW74AHC123APW,118
( 9352 655 64118 )
ActiveAHC123A
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74AHC123APW74AHC123APW,112
( 9352 655 64112 )
Discontinued / End-of-lifeAHC123A
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk Pack

Discontinuation information

Type numberOrderable part numberOrdering codeLast time buy dateLast time delivery dateReplacement productStatusComments
74AHC123APW74AHC123APW,112935265564112

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74AHC123APW74AHC123APW,11874AHC123APW29.90.91.11E911

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74AHC123APW74AHC123APW,11274AHC123APW29.90.91.11E911
Quality and reliability disclaimer

Documentation (4)

File nameTitleTypeDate
74AHC_AHCT123ADual retriggerable monostable multivibrator with resetData sheet2020-06-17
AN11106Pin FMEA for AHC/AHCT familyApplication note2019-01-09
ahc123aahc123a IBIS modelIBIS model2013-04-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

Support

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Models

File nameTitleTypeDate
ahc123aahc123a IBIS modelIBIS model2013-04-08

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74AHC123APW74AHC123APW,118935265564118Reel 13" Q1/T1Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.