74ACT11643_10 Datasheet, PDF (1/6 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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• Bidirectional Bus Transceiver in
High-Density 24-Pin Package
• Inputs Are TTL-Voltage Compatible
• Flow-Through Architecture to Optimize
PCB Layout
• Center-Pin V_CC and GND Configurations to
Minimize High-Speed Switching Noise
• EPICt (Enhanced-Performance Implanted
CMOS) 1-mm Process
• 500-mA Typical Latch-Up Immunity at
125°C
• Package Options Include Plastic Small-
Outline Packages and Standard Plastic
300-mil DIPs
74ACT11643
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCAS051A − D2957, JULY 1987 − REVISED APRIL 1993
DW OR NT PACKAGE
(TOP VIEW)
A1 1
A2 2
A3 3
A4 4
GND 5
GND 6
GND 7
GND 8
A5 ⁹
A6 ¹⁰
A7 ¹¹
A8 ¹²
24 DIR
23 B1
22 B2
21 B3
20 B4
19 V_CC
18 V_CC
17 B5
16 _B6
15 _B7
14 _B8
13 _G
description
This octal bus transceiver is designed for asynchronous two-way communication between data buses. This
device transmits data from the A bus to the B bus or from the B bus to the A bus depending upon the level at
the direction control (DIR) input. The enable input G can be used to disable the device so the buses are
effectively isolated.
The 74ACT11643 is characterized for operation from − 40°C to 85°C.
FUNCTION TABLE
CONTROL
INPUTS
G
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  1993, Texas Instruments Incorporated
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