74AHC574; 74AHCT574

Octal D-type flip-flop; positive edge-trigger; 3-state

The 74AHC574; 74AHCT574 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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

Features and benefits

Wide supply voltage range:
- For 74AHC574: from 2.0 V to 5.5 V
- For 74AHCT574: from 4.5 V to 5.5 V
Overvoltage tolerant inputs to 5.5 V
Balanced propagation delays
All inputs have a Schmitt-trigger action
High noise immunity
3-state non-inverting outputs for bus orientated applications
CMOS low power dissipation
Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
Input levels:
- For 74AHC574: CMOS input level
- For 74AHCT574: TTL input 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 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
74AHC574BQ	Production	2.0 - 5.5	CMOS	± 8	4.4	130	low	-40~125	77	8.1	48	DHVQFN20
74AHC574D	Production	2.0 - 5.5	CMOS	± 8	4.4	130	low	-40~125	84	26.4	60	SO20
74AHC574PW	Production	2.0 - 5.5	CMOS	± 8	4.4	130	low	-40~125	100	4.4	44	TSSOP20
74AHCT574BQ	Production	4.5 - 5.5	TTL	± 8	4.4	130	low	-40~125	77	8.1	48	DHVQFN20
74AHCT574D	Production	4.5 - 5.5	TTL	± 8	4.4	130	low	-40~125	84	26.4	60	SO20
74AHCT574PW	Production	4.5 - 5.5	TTL	± 8	4.4	130	low	-40~125	100	4.4	44	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74AHC574BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHC574	74AHC574BQ,115 ( 9352 855 46115 )
74AHC574D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHC574D	74AHC574D,118 ( 9352 630 80118 )
74AHC574PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHC574	74AHC574PW,118 ( 9352 630 81118 )
74AHCT574BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHCT574	74AHCT574BQ,115 ( 9352 855 49115 )
74AHCT574D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHCT574D	74AHCT574D,118 ( 9352 630 82118 )
74AHCT574PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHCT574	74AHCT574PW,118 ( 9352 630 83118 )

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))
74AHC574PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	AHC574	74AHC574PW,112 ( 9352 630 81112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74AHC574D	935263080112	2021-12-31	2022-06-30	74AHC574D
74AHC574PW	935263081112	2021-12-31	2022-06-30	74AHC574PW
74AHCT574D	935263082112	2021-12-31	2022-06-30	74AHCT574D
74AHCT574PW	935263083112	2021-12-31	2022-06-30	74AHCT574PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHC574BQ	74AHC574BQ,115	74AHC574BQ	Always Pb-free
74AHC574D	74AHC574D,118	74AHC574D	week 30, 2004
74AHC574PW	74AHC574PW,118	74AHC574PW	week 5, 2005
74AHCT574BQ	74AHCT574BQ,115	74AHCT574BQ	Always Pb-free
74AHCT574D	74AHCT574D,118	74AHCT574D	week 30, 2004
74AHCT574PW	74AHCT574PW,118	74AHCT574PW	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
74AHC574PW	74AHC574PW,112	74AHC574PW			week 5, 2005

Quality and reliability disclaimer

Documentation (8)

File name	Title	Type	Date
74AHC_AHCT574	Octal D-type flip-flop; positive edge-trigger; 3-state	Data sheet	2023-09-06
ahc574	ahc574 IBIS model	IBIS model	2013-04-07
ahct574	ahct574 IBIS model	IBIS model	2013-04-07
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
ahc574	ahc574 IBIS model	IBIS model	2013-04-07
ahct574	ahct574 IBIS model	IBIS model	2013-04-07

Ordering, pricing & availability

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