74LVC574A

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

The 74LVC574A is an 8-bit 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 to 3.6 V
CMOS low power consumption
Direct interface with TTL levels
Overvoltage tolerant inputs to 5.5 V
High-impedance when V_CC = 0 V
8-bit positive edge-triggered register
Independent register and 3-state buffer operation
Flow-through pin-out architecture
I_OFF circuitry provides partial Power-down mode 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
74LVC574ABQ	Production	1.2 - 3.6	CMOS/LVTTL	± 24	3.2	150	low	-40~125	79	9.5	50	DHVQFN20
74LVC574AD	Production	1.2 - 3.6	CMOS/LVTTL	± 24	3.2	150	low	-40~125	85	27.6	61	SO20
74LVC574APW	Production	1.2 - 3.6	CMOS/LVTTL	± 24	3.2	150	low	-40~125	101	4.7	45	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC574ABQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	LVC574A	74LVC574ABQ,115 ( 9352 735 17115 )
74LVC574AD	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74LVC574AD	74LVC574AD,118 ( 9352 190 30118 )
74LVC574APW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	LVC574A	74LVC574APW,118 ( 9352 190 50118 )

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))
74LVC574AD	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_112	Withdrawn / End-of-life	74LVC574AD	74LVC574AD,112 ( 9352 190 30112 )
74LVC574APW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	LVC574A	74LVC574APW,112 ( 9352 190 50112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74LVC574AD	935219030112	2021-12-31	2022-06-30	74LVC574AD
74LVC574APW	935219050112	2021-12-31	2022-06-30	74LVC574APW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74LVC574ABQ	74LVC574ABQ,115	74LVC574ABQ	Always Pb-free
74LVC574AD	74LVC574AD,118	74LVC574AD	week 30, 2004
74LVC574APW	74LVC574APW,118	74LVC574APW	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
74LVC574AD	74LVC574AD,112	74LVC574AD			week 30, 2004
74LVC574APW	74LVC574APW,112	74LVC574APW			week 7, 2005

Quality and reliability disclaimer

Documentation (11)

File name	Title	Type	Date
74LVC574A	Octal D-type flip-flop with 5 V tolerant inputs/outputs; positive edge-trigger; 3-state	Data sheet	2023-11-10
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
lvc574a	lvc574a 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

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Models

File name	Title	Type	Date
lvc574a	lvc574a IBIS model	IBIS model	2013-04-07
lvc	lvc Spice model	SPICE model	2013-05-06

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