AC11257 datasheet(1/12 Pages) TI

部件名	AC11257

功能描述	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

PDF	12 Pages

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制造商	TI [Texas Instruments]

网页	http://www.ti.com

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74AC11257

QUADRUPLE 2LINE TO 1LINE DATA SELECTOR/MULTIPLEXER

WITH 3STATE OUTPUTS

SCAS049C − MARCH 1989 − REVISED MAY 2004

1

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

D 3-State Outputs Interface Directly With

System Bus

D Flow-Through Architecture Optimizes

PCB Layout

D Center-Pin VCC and GND Configurations

Minimize High-Speed Switching Noise

D 500-mA Typical Latch-Up Immunity at

125

°C

D Provides Bus Interface From Multiple

Sources in High-Performance Systems

description/ordering information

This device is designed to multiplex signals from 4-bit data sources to four 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.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE MARKING

PDIP − N

Tube

74AC11257N

SOIC − DW

Tube

74AC11257DW

AC11257

−40

°C to 85°C

SOIC − DW

Tape and reel

74AC11257DWR

AC11257

−40

°C to 85°C

SSOP − DB

Tape and reel

74AC11257DBR

AE257

TSSOP − PW

Tube

74AC11257PW

AE257

TSSOP − PW

Tape and reel

74AC11257PWR

AE257

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

FUNCTION TABLE

INPUTS

OUTPUT

OE

SELECT

DATA

OUTPUT

Y

OE

SELECT

A/B

A

B

Y

H

X

Z

L

X

L

H

X

H

L

H

X

L

H

X

H

Copyright

 2004, Texas Instruments Incorporated

PRODUCTION DATA information is 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.

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.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

A/B

1Y

2Y

GND

3Y

4Y

OE

1A

1B

2A

2B

VCC

3A

3B

4A

4B

DB, DW, N, OR PW PACKAGE

(TOP VIEW)

类似零件编号 - AC11257

制造商	部件名	数据表	功能描述
Texas Instruments	AC11257	1Mb / 16P	QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

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