74LVC374A

Octal D-type flip-flop; 5 V tolerant inputs/outputs; positive-edge trigger; 3-state

The 74LVC374A is an octal positive-edge triggered D-type flip-flop with 3-state outputs. The device features a clock (CP) and output enable (OE) inputs. The flip-flops will store the state of their individual D-inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CP) transition. A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops. Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments.

Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.

This device is fully specified for partial power down applications using I_OFF. The I_OFF circuitry disables the output, preventing the potentially damaging backflow current through the device when it is powered down.

Features and benefits

Wide supply voltage range from 1.2 V to 3.6 V
Overvoltage tolerant inputs to 5.5 V
CMOS low power dissipation
Direct interface with TTL levels
I_OFF circuitry provides partial Power-down mode operation
8-bit positive edge-triggered register
Independent register and 3-state buffer operation
Complies with JEDEC standard:
- JESD8-7A (1.65 V to 1.95 V)
- JESD8-5A (2.3 V to 2.7 V)
- JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	f_max (MHz)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74LVC374ABQ	Production	1.2 - 3.6	CMOS/LVTTL	± 24	2.7	100	low	-40~125	78	9.0	49	DHVQFN20
74LVC374AD	Production	1.2 - 3.6	CMOS/LVTTL	± 24	2.7	100	low	-40~125	85	27.1	61	SO20
74LVC374APW	Production	1.2 - 3.6	CMOS/LVTTL	± 24	2.7	100	low	-40~125	101	4.6	45	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC374ABQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	LVC374A	74LVC374ABQ,115 ( 9352 734 79115 )
74LVC374AD	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74LVC374AD	74LVC374AD,118 ( 9352 186 60118 )
74LVC374APW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	LVC374A	74LVC374APW,118 ( 9352 186 80118 )

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

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC374APW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	LVC374A	74LVC374APW,112 ( 9352 186 80112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74LVC374AD	935218660112	2021-12-31	2022-06-30	74LVC374AD
74LVC374APW	935218680112	2021-12-31	2022-06-30	74LVC374APW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74LVC374ABQ	74LVC374ABQ,115	74LVC374ABQ	Always Pb-free
74LVC374AD	74LVC374AD,118	74LVC374AD	week 30, 2004
74LVC374APW	74LVC374APW,118	74LVC374APW	week 7, 2005

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

Type number	Orderable part number	Chemical content	RoHS	RHF-indicator	Leadfree conversion date
74LVC374APW	74LVC374APW,112	74LVC374APW			week 7, 2005

Quality and reliability disclaimer

Documentation (11)

File name	Title	Type	Date
74LVC374A	Octal D-type flip-flop; 5 V tolerant inputs/outputs; positive-edge trigger; 3-state	Data sheet	2023-09-01
AN263	Power considerations when using CMOS and BiCMOS logic devices	Application note	2023-02-07
AN11009	Pin FMEA for LVC family	Application note	2019-01-09
lvc374a	lvc374a IBIS model	IBIS model	2013-04-07
Nexperia_Selection_guide_2023	Nexperia Selection Guide 2023	Selection guide	2023-05-10
lvc	lvc Spice model	SPICE model	2013-05-06
SOT764-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm body	Package information	2022-06-21
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT360-1	plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body	Package information	2022-06-21
SOT163-1	plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body	Package information	2022-06-20
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

Support

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Models

File name	Title	Type	Date
lvc374a	lvc374a IBIS model	IBIS model	2013-04-07
lvc	lvc Spice model	SPICE model	2013-05-06

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