74LS257 Series

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

Catalog(3 parts)

Part	Operating Temperature▲▼	Type	Circuit▲▼	Circuit	Mounting Type	Package / Case	Package / Case▲▼	Current - Output High, Low▲▼	Independent Circuits▲▼	Supplier Device Package	Voltage Supply Source	Voltage - Supply▲▼	Voltage - Supply▲▼
Texas Instruments SN74LS257BDR Multiplexer 4 x 2:1 16-SOIC	70 °C	Multiplexer	4 ul	2:1	Surface Mount	16-SOIC	0.003911599982529879 m, 3.900000095367432 ul	0.0026000000070780516 A, 0.024000000208616257 A	1 ul	16-SOIC	Single Supply	4.75 V	5.25 V
Texas Instruments SN74LS257BNSR Multiplexer 4 x 2:1 16-SO	70 °C	Multiplexer	4 ul	2:1	Surface Mount	16-SOIC (0.209", 5.30mm Width)		0.0026000000070780516 A, 0.024000000208616257 A	1 ul	16-SO	Single Supply	4.75 V	5.25 V
Texas Instruments SN74LS257BN Multiplexer 4 x 2:1 16-PDIP	70 °C	Multiplexer	4 ul	2:1	Through Hole	16-DIP	0.007619999814778566 m, 0.007619999814778566 m	0.0026000000070780516 A, 0.024000000208616257 A	1 ul	16-PDIP	Single Supply	4.75 V	5.25 V

Key Features

• Three-State Outputs Interface Directly with System Bus'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158Provides Bus Interface from Multiple Sources in High-Performance SystemsOff state (worst case)Three-State Outputs Interface Directly with System Bus'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158Provides Bus Interface from Multiple Sources in High-Performance SystemsOff state (worst case)

Description

These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level. Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C. These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level. Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C.