SN74AHC257

更新时间： 2024-11-17 05:17:55

品牌	Logo	应用领域
德州仪器 - TI		复用器输出元件
页数	文件大小	规格书
9页	134K
描述
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

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SN74AHC257 数据手册

SN54AHC257, SN74AHC257

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

WITH 3-STATE OUTPUTS

SCLS349C – MAY 1996 – REVISED JULY 1998

SN54AHC257 . . . J OR W PACKAGE

SN74AHC257 . . . D, DB, DGV, N, OR PW PACKAGE

(TOP VIEW)

Operating Range 2-V to 5.5-V V

EPIC (Enhanced-Performance Implanted

CMOS) Process

A/B

Package Options Include Plastic

Small-Outline (D), Shrink Small-Outline

(DB), Thin Very Small-Outline (DGV), Thin

Shrink Small-Outline (PW), and Ceramic

Flat (W) Packages, Ceramic Chip Carriers

(FK), and Standard Plastic (N) and Ceramic

(J) DIPs

12 4Y

GND

description

These quadruple 2-line to 1-line data

selectors/multiplexers are designed for 2-V to

SN54AHC257 . . . FK PACKAGE

(TOP VIEW)

5.5-V V

operation.

The ’AHC257 devices 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 a high logic level.

1 20 19

17 4B

To ensure the high-impedance state during power

up or power down, OE should be tied to V

9 10 11 12 13

through a pullup resistor; the minimum value of

the resistor is determined by the current-sinking

capability of the driver.

NC – No internal connection

The SN54AHC257 is characterized for operation

over the full military temperature range of –55°C

to 125°C. The SN74AHC257 is characterized for

operation from –40°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUT

A/B

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.

EPIC is a trademark of Texas Instruments Incorporated.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...9

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与SN74AHC257相关器件

型号	品牌	获取价格	描述	数据表
SN74AHC257BQBR	TI	获取价格	Quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs \| BQB \| 16 \| -40
SN74AHC257D	TI	获取价格	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74AHC257DB	TI	获取价格	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74AHC257DBLE	TI	获取价格	AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, PLASTIC, SSOP-16
SN74AHC257DBR	TI	获取价格	AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, PLASTIC, SSOP-16
SN74AHC257DGV	TI	获取价格	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74AHC257DGVR	TI	获取价格	AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, PLASTIC, TVSOP-16
SN74AHC257DR	TI	获取价格	AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, PLASTIC, SO-16
SN74AHC257N	TI	获取价格	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SN74AHC257PW	TI	获取价格	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

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