74ACT11623 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS

ą
• Local Bus-Latch Capability
• Inputs Are TTL-Voltage Compatible
• Flow-Through Architecture Optimizes
PCB Layout
• Center-Pin V_CC and GND Configurations
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
description
74ACT11623
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCAS059A − 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 GAB
23 B1
22 _B2
21 _B3
20 _B4
19 _VCC
18 _VCC
17 _B5
16 _B6
15 _B7
14 _B8
13 _GBA
The 74ACT11623 is designed for asynchronous two-way communication between data buses. The control
function implementation allows for maximum flexibility in timing.
The device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon
the logic levels at the enable inputs (GBA and GAB). The enable inputs can be used to disable the device so
that the buses are effectively isolated.
The dual-enable configuration gives these devices the capability to store data by simultaneous enabling of GBA
and GAB. Each output reinforces its input in this transceiver configuration. Thus, when both control inputs are
enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16
in all) will remain at their last states. The 8-bit codes appearing on the two sets of buses will be identical for the
74ACT11623.
The 74ACT11623 is characterized for operation from − 40°C to 85°C.
FUNCTION TABLE
ENABLE INPUTS
GBA GAB
L
L
H
H
H
L
L
H
OPERATION
B data to A bus
A data to B bus
Isolation
B data to A bus,
A data to B bus
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
2−1