74AHCT123ABQ-Q100

Dual retriggerable monostable multivibrator with reset

The 74AHC123A-Q100; 74AHCT123A-Q100 are high-speed Si-gate CMOS devices and are pin compatible with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74AHC123A-Q100; 74AHCT123A-Q100 are dual retriggerable monostable multivibrators with output pulse width control by three methods. The selection of an external resistor (Rext) and capacitor (Cext) program the basic pulse time.

Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (nA) or the active HIGH-going edge input (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, which also inhibits the triggering.

An internal connection from nRD to the input gate makes it possible to trigger the circuit by a positive-going signal at input nRD. The values of the external timing components Rext and Cext, determine the basic output pulse width. When Cext ≥ 10 nF, the typical output pulse width is defined as: tW = Rext x Cext where tW = pulse width in ns; Rext = external resistor in kΩ; Cext = external capacitor in pF. Schmitt-trigger action at all inputs makes the circuit highly tolerant to slower input rise and fall times.

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

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74AHCT123ABQ-Q100 74AHCT123ABQ-Q100X 935300988115 SOT763-1 Order product

Features

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • All inputs have a Schmitt-trigger action
  • Inputs accept voltages higher than VCC
  • DC triggered from active HIGH or active LOW inputs
  • Retriggerable for very long pulses up to 100 % duty factor
  • Direct reset terminates output pulse
  • For 74AHC123A-Q100 only: operates with CMOS input levels
  • For 74AHCT123A-Q100 only: operates with TTL input levels
  • 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)
  • Multiple package options

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHCT123ABQ-Q100Production4.5 - 5.5TTL+/- 85low-40~1259414.463DHVQFN16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74AHCT123ABQ-Q10074AHCT123ABQ-Q100X
( 9353 009 88115 )
ActiveAT123A
DHVQFN16
(SOT763-1)
SOT763-1Reel 7" Q1/T1

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRMSLMSL leadfree
74AHCT123ABQ-Q10074AHCT123ABQ-Q100X74AHCT123ABQ-Q100Always Pb-free84.911
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74AHC_AHCT123A_Q100Dual retriggerable monostable multivibrator with resetData sheet2017-05-03
AN11106Pin FMEA for AHC/AHCT familyApplication note2019-01-09
ahct123aahct123a IBIS modelIBIS model2013-04-08
SOT763-1_115DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115Packing2016-07-05
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyOutline drawing2018-11-14

Support

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Models

File nameTitleTypeDate
ahct123aahct123a IBIS modelIBIS model2013-04-08

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74AHCT123ABQ-Q10074AHCT123ABQ-Q100X935300988115Reel 7" Q1/T1Order product

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