Datasheet > SN54HCT257_14

SN54HCT257_14

更新时间： 2024-11-06 02:58:43

品牌	Logo	应用领域
德州仪器 - TI		输出元件
页数	文件大小	规格书
6页	113K
描述
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

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SN54HCT257_14 数据手册

SN54HCT257, SN74HCT257

QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

WITH 3-STATE OUTPUTS

SCLS072B – NOVEMBER 1988 – REVISED MAY 1997

SN54HCT257 . . . J PACKAGE

SN74HCT257 . . . N PACKAGE

(TOP VIEW)

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

A/B

Buffered Inputs and Outputs

Package Options Include Ceramic Chip

Carriers (FK) and Standard Plastic (N) and

Ceramic (J) 300-mil DIPs

12 4Y

GND

description

The ’HCT257 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

(OE) input is at the high logic level.

SN54HCT257 . . . FK PACKAGE

(TOP VIEW)

20 19

The SN54HCT257 is characterized for operation

over the full military temperature range of –55°C

to 125°C. The SN74HCT257 is characterized for

operation from –40°C to 85°C.

15 4Y

9 10 11 12 13

FUNCTION TABLE

INPUTS

OUTPUT

DATA

SELECT

A/B

NC – No internal connection

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6

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与SN54HCT257_14相关器件

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