Specification	SN74ALS21ADR

Current - Output High, Low [custom]	400 µA
Current - Output High, Low [custom]	8 mA
Input Logic Level - Low	0.8 V
Logic Type	AND Gate
Max Propagation Delay @ V, Max CL	15 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

SN74ALS21A 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]	Package / Case [x]	Package / Case [y]	Package / Case	Operating Temperature [Max]	Max Propagation Delay @ V, Max CL	Input Logic Level - Low	Mounting Type	Number of Inputs	Number of Circuits	Logic Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Supplier Device Package
Texas Instruments SN74ALS21ADR	4.5 V	5.5 V	0.154 in	3.9 mm	14-SOIC	70 °C	15 ns	0.8 V	Surface Mount	4	2	AND Gate	400 µA	8 mA
Texas Instruments SN74ALS21ANSR	4.5 V	5.5 V	0.209 "	5.3 mm	14-SOIC	70 °C	15 ns	0.8 V	Surface Mount	4	2	AND Gate	400 µA	8 mA	14-SO
Texas Instruments SN74ALS21AN	4.5 V	5.5 V	0.3 "	7.62 mm	14-DIP	70 °C	15 ns	0.8 V	Through Hole	4	2	AND Gate	400 µA	8 mA

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.00
		10	$ 0.89
		25	$ 0.85
		100	$ 0.69
		250	$ 0.65
		500	$ 0.57
		1000	$ 0.45
	Digi-Reel®	1	$ 1.00
		10	$ 0.89
		25	$ 0.85
		100	$ 0.69
		250	$ 0.65
		500	$ 0.57
		1000	$ 0.45
	Tape & Reel (TR)	2500	$ 0.37
Texas Instruments	LARGE T&R	1	$ 0.85
		100	$ 0.65
		250	$ 0.48
		1000	$ 0.34

Description

General part information

SN74ALS21A 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