Specification	SN74ALS257ANSR

Circuit [custom]	4
Circuit [custom]	2:1
Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	2.6 mA
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	0.209 "
Package / Case	16-SOIC
Package / Case	5.3 mm
Supplier Device Package	16-SO
Type	Multiplexer
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Voltage Supply Source	Single Supply

SN74ALS257A Series

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

Part	Voltage Supply Source	Package / Case	Package / Case [x]	Package / Case [y]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Supplier Device Package	Operating Temperature [Max]	Type	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Circuit [custom]	Circuit [custom]	Independent Circuits	Package / Case	Package / Case
Texas Instruments SN74ALS257ADR	Single Supply	16-SOIC	0.154 in	3.9 mm	24 mA	2.6 mA	16-SOIC	70 °C	Multiplexer	Surface Mount	4.5 V	5.5 V	4	2:1	1
Texas Instruments SN74ALS257AD	Single Supply	16-SOIC	0.154 in	3.9 mm	24 mA	2.6 mA	16-SOIC	70 °C	Multiplexer	Surface Mount	4.5 V	5.5 V	4	2:1	1
Texas Instruments SN74ALS257ANSR	Single Supply	16-SOIC			24 mA	2.6 mA	16-SO	70 °C	Multiplexer	Surface Mount	4.5 V	5.5 V	4	2:1	1	0.209 "	5.3 mm
Texas Instruments SN74ALS257ANG4	Single Supply	16-DIP			24 mA	2.6 mA	16-PDIP	70 °C	Multiplexer	Through Hole	4.5 V	5.5 V	4	2:1	1	0.3 in	7.62 mm

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	$ 1.66
		10	$ 1.49
		25	$ 1.40
		100	$ 1.20
		250	$ 1.12
		500	$ 0.98
		1000	$ 0.81
	Digi-Reel®	1	$ 1.66
		10	$ 1.49
		25	$ 1.40
		100	$ 1.20
		250	$ 1.12
		500	$ 0.98
		1000	$ 0.81
	Tape & Reel (TR)	2000	$ 0.76
		6000	$ 0.73
		10000	$ 0.70
Texas Instruments	LARGE T&R	1	$ 1.51
		100	$ 1.16
		250	$ 0.86
		1000	$ 0.61

Description

General part information

SN74ALS257A Series

These data selectors/multiplexers are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable () input is at a high logic level.

The SN54ALS257A and SN54ALS258A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS257A, SN74ALS258A, SN74AS257, and SN74AS258 are characterized for operation from 0°C to 70°C.

Documents

Technical documentation and resources

Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs datasheet (Rev. C)

Data sheet