Specification	SN74AS21D

Current - Output High, Low [custom]	20 mA
Current - Output High, Low [custom]	2 mA
Input Logic Level - Low	0.8 V
Logic Type	AND Gate
Max Propagation Delay @ V, Max CL	6 ns
Mounting Type	Surface Mount
Number of Circuits	2
Number of Inputs	4
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	14-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74AS21 Series

2-ch, 4-input, 4.5-V to 5.5-V ultra-high-speed (4 ns) bipolar AND gate

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Input Logic Level - Low	Number of Inputs	Operating Temperature [Max]	Operating Temperature [Min]	Number of Circuits	Max Propagation Delay @ V, Max CL	Mounting Type	Package / Case [x]	Package / Case [y]	Package / Case	Logic Type	Supplier Device Package
Texas Instruments SN74AS21D	4.5 V	5.5 V	20 mA	2 mA	0.8 V	4	70 °C	0 °C	2	6 ns	Surface Mount	0.154 in	3.9 mm	14-SOIC	AND Gate
Texas Instruments SN74AS21NSR	4.5 V	5.5 V	20 mA	2 mA	0.8 V	4	70 °C	0 °C	2	6 ns	Surface Mount	0.209 "	5.3 mm	14-SOIC	AND Gate	14-SO
Texas Instruments SN74AS21DR	4.5 V	5.5 V	20 mA	2 mA	0.8 V	4	70 °C	0 °C	2	6 ns	Surface Mount	0.154 in	3.9 mm	14-SOIC	AND Gate
Texas Instruments SN74AS21NS
Texas Instruments SN74AS21N	4.5 V	5.5 V	20 mA	2 mA	0.8 V	4	70 °C	0 °C	2	6 ns	Through Hole	0.3 "	7.62 mm	14-DIP	AND Gate

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.72
		10	$ 1.54
		50	$ 1.46
		100	$ 1.24
		250	$ 1.16
		500	$ 1.02
Texas Instruments	TUBE	1	$ 2.11
		100	$ 1.75
		250	$ 1.25
		1000	$ 0.94

Description

General part information

SN74AS21 Series

These devices contain two independent 4-input positive-AND gates. They perform the Boolean functionsorin positive logic.

The SN54ALS21A and SN54AS21 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS21A and SN74AS21 are characterized for operation from 0°C to 70°C.

These devices contain two independent 4-input positive-AND gates. They perform the Boolean functionsorin positive logic.

Documents

Technical documentation and resources

Dual 4-Input Positive-AND Gates datasheet (Rev. B)

Data sheet