74HC373; 74HCT373

Octal D-type transparent latch; 3-state

The 74HC373; 74HCT373 is an octal 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 include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

Features and benefits

Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
Input levels:
- For 74HC373: CMOS level
- For 74HCT373: TTL level
3-state non-inverting outputs for bus oriented applications
Common 3-state output enable input
ESD protection:
- HBM JESD22-A114F exceeds 2 kV
- MM JESD22-A115-A exceeds 200 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)	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
74HC373BQ	Production	2.0 - 6.0	CMOS	± 7.8	12	low	-40~125	78	9.1	50	DHVQFN20
74HC373D	Production	2.0 - 6.0	CMOS	± 7.8	12	low	-40~125	85	27.3	61	SO20
74HC373PW	Production	2.0 - 6.0	CMOS	± 7.8	12	low	-40~125	100	4.6	44.7	TSSOP20
74HCT373BQ	Production	4.5 - 5.5	TTL	± 6	14	low	-40~125	78	9.1	50	DHVQFN20
74HCT373D	Production	4.5 - 5.5	TTL	± 6	14	low	-40~125	85	27.3	61	SO20
74HCT373PW	Production	4.5 - 5.5	TTL	± 6	14	low	-40~125	100	4.6	44.7	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC373BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	HC373BQ	74HC373BQ,115 ( 9352 745 85115 )
74HC373D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_653	Active	74HC373D	74HC373D,653 ( 9337 154 70653 )
74HC373PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	HC373	74HC373PW,118 ( 9351 652 40118 )
74HCT373BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	HCT373BQ	74HCT373BQ,115 ( 9352 745 84115 )
74HCT373D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_653	Active	74HCT373D	74HCT373D,653 ( 9337 155 80653 )
74HCT373PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	HCT373	74HCT373PW,118 ( 9351 748 30118 )

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))
74HCT373PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	HCT373	74HCT373PW,112 ( 9351 748 30112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74HC373D	933715470652	2021-12-31	2022-06-30	74HC373D
74HC373PW	935165240112	2021-12-31	2022-06-30	74HC373PW
74HCT373D	933715580652	2021-12-31	2022-06-30	74HCT373D
74HCT373PW	935174830112	2021-12-31	2022-06-30	74HCT373PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74HC373BQ	74HC373BQ,115	74HC373BQ	Always Pb-free
74HC373D	74HC373D,653	74HC373D	week 30, 2004
74HC373PW	74HC373PW,118	74HC373PW	week 17, 2005
74HCT373BQ	74HCT373BQ,115	74HCT373BQ	Always Pb-free
74HCT373D	74HCT373D,653	74HCT373D	week 30, 2004
74HCT373PW	74HCT373PW,118	74HCT373PW	week 17, 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
74HCT373PW	74HCT373PW,112	74HCT373PW			week 17, 2005

Quality and reliability disclaimer

Documentation (9)

File name	Title	Type	Date
74HC_HCT373	Octal D-type transparent latch; 3-state	Data sheet	2021-09-06
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
hc	HC/HCT Spice model	SPICE model	2022-02-17
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
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
hc	HC/HCT Spice model	SPICE model	2022-02-17

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