74AHC573; 74AHCT573

Octal D-type transparent latch; 3-state

The 74AHC573; 74AHCT573 is an 8-bit D-type transparent latch with 3-state outputs. The device features latch enable (LE) and output enable (OE) inputs. When LE is HIGH, data at the inputs enter the latches. In this condition the latches are transparent, a latch output will change each time its corresponding D-input changes. When LE is LOW the latches store the information that was present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE. 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 latches. 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 from 2.0 V to 5.5 V
Balanced propagation delays
All inputs have Schmitt-trigger action
Overvoltage tolerant inputs to 5.5 V
High noise immunity
CMOS low power dissipation
Common 3-state output enable input
Functionally identical to the 74AHC373; 74AHCT373
Input levels:
- For 74AHC573: CMOS input level
- For 74AHCT573: 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
Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
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)	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
74AHC573BQ	Production	2.0 - 5.5	CMOS	± 8	4.2	low	-40~125	77	8.1	48	DHVQFN20
74AHC573D	Production	2.0 - 5.5	CMOS	± 8	4.2	low	-40~125	84	26.4	60	SO20
74AHC573PW	Production	2.0 - 5.5	CMOS	± 8	4.2	low	-40~125	100	4.4	44	TSSOP20
74AHCT573BQ	Production	4.5 - 5.5	TTL	± 8	3.9	low	-40~125	77	8.1	48	DHVQFN20
74AHCT573D	Production	4.5 - 5.5	TTL	± 8	3.9	low	-40~125	84	26.4	60	SO20
74AHCT573PW	Production	4.5 - 5.5	TTL	± 8	3.9	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))
74AHC573BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHC573	74AHC573BQ,115 ( 9352 805 55115 )
74AHC573D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHC573D	74AHC573D,118 ( 9352 630 75118 )
74AHC573PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHC573	74AHC573PW,118 ( 9352 630 72118 )
74AHCT573BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHCT573	74AHCT573BQ,115 ( 9352 905 32115 )
74AHCT573D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHCT573D	74AHCT573D,118 ( 9352 630 73118 )
74AHCT573PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHCT573	74AHCT573PW,118 ( 9352 630 74118 )

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))
74AHC573D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_112	Withdrawn / End-of-life	74AHC573D	74AHC573D,112 ( 9352 630 75112 )
74AHCT573PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	AHCT573	74AHCT573PW,112 ( 9352 630 74112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74AHC573D	935263075112	2021-12-31	2022-06-30	74AHC573D
74AHC573PW	935263072112	2021-12-31	2022-06-30	74AHC573PW
74AHCT573D	935263073112	2021-12-31	2022-06-30	74AHCT573D
74AHCT573PW	935263074112	2021-12-31	2022-06-30	74AHCT573PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHC573BQ	74AHC573BQ,115	74AHC573BQ	Always Pb-free
74AHC573D	74AHC573D,118	74AHC573D	week 13, 2005
74AHC573PW	74AHC573PW,118	74AHC573PW	week 7, 2005
74AHCT573BQ	74AHCT573BQ,115	74AHCT573BQ	Always Pb-free
74AHCT573D	74AHCT573D,118	74AHCT573D	week 30, 2004
74AHCT573PW	74AHCT573PW,118	74AHCT573PW	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
74AHC573D	74AHC573D,112	74AHC573D			week 13, 2005
74AHCT573PW	74AHCT573PW,112	74AHCT573PW			week 7, 2005

Quality and reliability disclaimer

Documentation (8)

File name	Title	Type	Date
74AHC_AHCT573	Octal D-type transparent latch; 3-state	Data sheet	2023-10-11
ahct573	ahct573 IBIS model	IBIS model	2013-04-07
ahc573	ahc573 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
ahct573	ahct573 IBIS model	IBIS model	2013-04-07
ahc573	ahc573 IBIS model	IBIS model	2013-04-07

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