74LV74DB: Dual D-type flip-flop with set and reset; positive-edge trigger

The 74LV74 is a dual positive edge triggered, D-type flip-flop. It has individual data (nD) inputs, clock (nCP) inputs, set (nSD) and (nRD) inputs, and complementary nQ and nQ outputs.

The set and reset are asynchronous active LOW inputs that operate independently of the clock input. Information on the data input is transferred to the nQ output on the LOW-to-HIGH transition of the clock pulse. The nD 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.

74LV74DB: Product Block Diagram
Outline 3d SOT337-1
Data Sheets (1)
Name/DescriptionModified Date
Dual D-type flip-flop with set and reset; positive-edge trigger (REV 4.0) PDF (180.0 kB) 74LV74 [English]09 Dec 2015
Application Notes (1)
Name/DescriptionModified Date
Sorting through the low voltage logic maze (REV 1.0) PDF (72.0 kB) AN10156 [English]13 Mar 2013
Brochures (2)
Name/DescriptionModified Date
電圧レベルシフタ (REV 1.1) PDF (3.1 MB) 75017511_JP [English]16 Feb 2015
Voltage translation: How to manage mixed-voltage designs with NXP® level translators (REV 1.0) PDF (2.6 MB) 75017511 [English]20 May 2014
Package Information (1)
Name/DescriptionModified Date
plastic shrink small outline package; 14 leads; body width 5.3 mm (REV 1.0) PDF (295.0 kB) SOT337-1 [English]08 Feb 2016
Packing (1)
Name/DescriptionModified Date
Standard product orientation 12NC ending 118 (REV 1.0) PDF (86.0 kB) SOT337-1_118 [English]04 Apr 2013
Supporting Information (2)
Name/DescriptionModified Date
Footprint for reflow soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-REFLOW [English]08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
SPICE model
Ordering Information
ProductStatusFamilyVCC (V)FunctionLogic switching levelsDescriptionOutput drive capability (mA)Package versiontpd (ns)fmax (MHz)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package nameNo of pins
74LV74DBActiveLV1.0 - 5.5D-type flip-flopsTTLpositive-edge trigger+/- 12SOT337-11175low-40~12515640.0SSOP1414
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
74LV74DBSOT337-1SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1Active74LV74DB,118 (9351 702 10118)LV7474LV74DBweek 12, 2005144.910.239.78E711
Bulk PackActive74LV74DB,112 (9351 702 10112)LV7474LV74DBweek 12, 2005144.910.239.78E711
Dual D-type flip-flop with set and reset; positive-edge trigger 74LV74PW
Sorting through the low voltage logic maze 74LVC_H_245A_Q100
電圧レベルシフタ 74AVC16245DGG-Q100
Voltage translation: How to manage mixed-voltage designs with NXP® level translators 74AVC16245DGG-Q100
lv Spice model 74LV74PW
plastic shrink small outline package; 14 leads; body width 5.3 mm 74LVC32A_Q100
Footprint for reflow soldering 74HC_T_595_Q100
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
Standard product orientation 12NC ending 118 74LVC32A_Q100
74LV74
74LV164