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74AHC123AD

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
74AHC123AD 74AHC123AD,118 935265563118 SOT109-1 Order product
74AHC123AD 74AHC123AD,112 935265563112 SOT109-1 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
74AHC123ADProduction2.0 - 5.5CMOS± 85.1low-40~1259310.153SO16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74AHC123AD74AHC123AD,118
( 9352 655 63118 )
Active74AHC123AD
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1
74AHC123AD,112
( 9352 655 63112 )
Active74AHC123ADBulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74AHC123AD74AHC123AD,11874AHC123AD84.96.621.51E811
74AHC123AD74AHC123AD,11274AHC123AD84.96.621.51E811
Quality and reliability disclaimer

Documentation (5)

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
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File nameTitleTypeDate
ahc123aahc123a IBIS modelIBIS model2013-04-08

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74AHC123AD74AHC123AD,118935265563118Reel 13" Q1/T1Order product
74AHC123AD74AHC123AD,112935265563112Bulk PackOrder 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.