74HC74DB NRND

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

The 74HC74 and 74HCT74 are dual positive edge triggered D-type flip-flop. They have individual data (nD), clock (nCP), set (nSD) and reset (nRD) inputs, and complementary nQ and nQ outputs. Data at the nD-input, that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition, is stored in the flip-flop and appears at the nQ output. Schmitt-trigger action in the clock input, makes the circuit highly tolerant to slower clock rise and fall times. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Not recommended for new designs (NRND), click here for the alternative product.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HC74DB 74HC74DB,118 935175170118 SOT337-1 Order product
74HC74DB 74HC74DB,112 935175170112 SOT337-1 Order product

Features

  • Input levels:
    • For 74HC74: CMOS level
    • For 74HCT74: TTL level
  • Symmetrical output impedance
  • Low power dissipation
  • High noise immunity
  • Balanced propagation delays
  • Specified in compliance with JEDEC standard no. 7A
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Target applications

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)Package name
74HC74DB
NRND
Not for design in2.0 - 6.0CMOS+/- 5.21482low-40~12515640.0SSOP14

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HC74DB
NRND
74HC74DB,118
( 9351 751 70118 )
ActiveHC74
SSOP14
(SOT337-1)
SOT337-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1
74HC74DB,112
( 9351 751 70112 )
ActiveHC74Bulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74HC74DB
NRND
74HC74DB,11874HC74DB11
74HC74DB
NRND
74HC74DB,11274HC74DB11
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
74HC_HCT74Dual D-type flip-flop with set and reset; positive edge-triggerData sheet2017-03-30
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
hchc Spice modelSPICE model2013-05-06
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT337-1_118Standard product orientation 12NC ending 118Packing2013-04-04
SOT337-1plastic, shrink small outline package; 14 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyOutline drawing2018-10-18

Support

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Models

File nameTitleTypeDate
hchc Spice modelSPICE model2013-05-06

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HC74DB74HC74DB,118935175170118Reel 13" Q1/T1Order product
74HC74DB74HC74DB,112935175170112Bulk PackOrder product

Sample

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Sample orders normally take 2-4 days for delivery.

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