74ACT11257 Datasheet, PDF (1/6 Pages) Texas Instruments – QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

74ACT11257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS053B – JANUARY 1989 – REVISED APRIL 1996
D Inputs Are TTL-Voltage Compatible
D 3-State Outputs Interface Directly With
System Bus
D Flow-Through Architecture Optimizes
PCB Layout
D Center-Pin V_CC and GND Configurations
Minimize High-Speed Switching Noise
D EPICt (Enhanced-Performance Implanted
CMOS) 1-mm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Provides Bus Interface From Multiple
Sources in High-Performance Systems
D Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, and Standard
Plastic 300-mil DIPs (N)
DB, DW, OR N PACKAGE
(TOP VIEW)
A /B ₁
1Y 2
2Y 3
GND 4
GND 5
GND 6
GND 7
3Y 8
4Y 9
OE 10
20 ^1A
19 1B
18 2A
17 2B
16 V_CC
15 V_CC
14 3A
13 3B
12 4A
11 4B
description
The 74ACT11257 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.
The 74ACT11257 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
SELECT
OE
A/B
DATA
A
B
OUTPUT
Y
H
X
X
X
Z
L
L
L
X
L
L
L
H
X
H
L
H
X
L
L
L
H
X
H
H
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of 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.
Copyright © 1996, Texas Instruments Incorporated
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