Specification	SN74ALS873BDW

Circuit	4:4
Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	2.6 mA
Delay Time - Propagation	8 ns
Independent Circuits	2
Logic Type	D-Type Transparent Latch
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Type	Tri-State
Package / Case	24-SOIC
Package / Case [custom]	7.5 mm
Package / Case [custom]	0.295 in
Supplier Device Package	24-SOIC
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS873B Series

Dual 4-Bit D-Type Latches With 3-State Outputs

Part	Mounting Type	Supplier Device Package	Delay Time - Propagation	Independent Circuits	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Output Type	Logic Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Circuit	Package / Case	Package / Case	Package / Case	Package / Case [custom]	Package / Case [custom]
Texas Instruments SN74ALS873BNT	Through Hole	24-PDIP	8 ns	2	24 mA	2.6 mA	Tri-State	D-Type Transparent Latch	70 °C	0 °C	4.5 V	5.5 V	4:4	0.3 in	24-DIP	7.62 mm
Texas Instruments SN74ALS873BDW	Surface Mount	24-SOIC	8 ns	2	24 mA	2.6 mA	Tri-State	D-Type Transparent Latch	70 °C	0 °C	4.5 V	5.5 V	4:4		24-SOIC		7.5 mm	0.295 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Texas Instruments	TUBE	1	$ 5.94
		100	$ 4.84
		250	$ 3.81
		1000	$ 3.23

Description

General part information

SN74ALS873B Series

These dual 4-bit D-type latches feature 3-state outputs designed specifically for bus driving. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The dual 4-bit latches are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs in true form, according to the function table. When LE is low, the outputs are latched. When the clear () input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable () input is at a high logic level.

The SN54ALS873B and SN54AS873A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS873B and SN74AS873A are characterized for operation from 0°C to 70°C.

Documents

Technical documentation and resources

Dual 4-Bit D-Type Latches With 3-State Outputs datasheet (Rev. D)

Data sheet