SN74ALS257A Series

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

Catalog

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

Catalog

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

Key Features

• 3-State Outputs Interface Directly With System BusProvide Bus Interface From Multiple Sources in High-Performance SystemsPackage Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs3-State Outputs Interface Directly With System BusProvide Bus Interface From Multiple Sources in High-Performance SystemsPackage Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

Description

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. 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.