











SN54HCT257, SN74HCT257 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SCLS072B - NOVEMBER 1988 - REVISED MAY 1997
Please be aware that an important notice concerningavailability, standard warranty, and use in critical applications ofTexasInstruments semiconductor products and disclaimers theretoappears at the end of this data sheet.
features
- Inputs Are TTL-Voltage Compatible
- Provide Bus Interface From Multiple Sources in High-Performance Systems
- High-Current 3-State Outputs Interface Directly With System Bus
- Buffered Inputs and Outputs
- Package Options Include Ceramic Chip Carriers (FK) and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
description
The 'HCT257 are designed to multiplex signals from 4-bit datasources to 4-output data lines in bus-organized systems. The 3-stateoutputs do not load the data lines when the output-enable () input is at the high logic level.
The SN54HCT257 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74HCT257 is characterized for operation from -40°C to85°C.
Title: QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
Product Family: MULTIPLEXERS
Device Functionality: QUADRUPLE DATA SELECTOR/MULTIPLEXER
Orderable Devices: SN74HCT257D, SN74HCT257DR, SN74HCT257N
View the complete PDF datasheet: scls072b.pdf (105 K Bytes) (Requires Acrobat Reader 3.x)View more information about generic part numbers:SN74HCT257
Go to the Engineering Design Center to locate information on other TI Semiconductor devices.




(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
Trademarks, Important Notice!