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74AHCT74D

Dual D-type flip-flop with set and reset; positive-edge trigger

The 74AHC74; 74AHCT74 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

The 74AHC74; 74AHCT74 is a dual positive-edge triggered, D-type flip-flop with individual data inputs (D), clock inputs (CP), set inputs (SD) and reset inputs (RD). It also has complementary outputs (Q and Q).

The set and reset are asynchronous active LOW inputs that operate independent of the clock input. Information on the data input is transferred to the Q output on the LOW to HIGH transition of the clock pulse. The data inputs must be stable one set-up time prior to the LOW to HIGH clock transition for predictable operation.

Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.

Alternatives

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74AHCT74D 74AHCT74D,118 935263076118 SOT108-1 Order product

Features and benefits

  • Balanced propagation delays

  • All inputs have Schmitt-trigger actions

  • Inputs accept voltages higher than VCC

  • Input levels:

    • For 74AHC74: CMOS level

    • For 74AHCT74: TTL level

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Multiple package options

  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHCT74DProduction4.5 - 5.5TTL± 83.3160low-40~12510820.166SO14

PCB Symbol, Footprint and 3D Model

Model NameDescription

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74AHCT74D74AHCT74D,118
( 9352 630 76118 ) 		Active74AHCT74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_118

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
74AHCT74D74AHCT74D,112
( 9352 630 76112 ) 		Withdrawn / End-of-life74AHCT74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_112

Discontinuation information

Type numberOrderable part numberOrdering codeLast time buy dateLast time delivery dateReplacement productStatusComments
74AHCT74D74AHCT74D,1129352630761122021-12-312022-06-3074AHCT74DVersion withdrawal

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicator
74AHCT74D74AHCT74D,11874AHCT74D

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

Type numberOrderable part numberChemical contentRoHSRHF-indicator
74AHCT74D74AHCT74D,11274AHCT74D
Quality and reliability disclaimer

Series

Documentation (9)

File nameTitleTypeDate
74AHC_AHCT74Dual D-type flip-flop with set and reset; positive-edge triggerData sheet2023-10-06
AN11106Pin FMEA for AHC/AHCT familyApplication note2019-01-09
ahct74ahct74 IBIS modelIBIS model2013-04-07
74AHCT74D_Nexperia_Product_Reliability74AHCT74D Nexperia Product ReliabilityQuality document2023-05-29
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT108-1_118SO14; Reel pack for SMD, 13"; Q1/T1 product orientationPacking information2021-01-20
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SOT108-1_112SO14; Tube pack; Standard product orientation Packing information2021-09-10

Support

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Models

File nameTitleTypeDate
ahct74ahct74 IBIS modelIBIS model2013-04-07

PCB Symbol, Footprint and 3D Model

Model NameDescription

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
74AHCT74D74AHCT74D,118935263076118SOT108-1_118- Order product

Sample

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How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet