74ACT11620_10 Datasheet, PDF (1/7 Pages) Texas Instruments – OCTAL TRANSCEIVER WITH DUAL ENABLE

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• Inputs Are TTL-Voltage Compatible
• Local Bus-Latch Capability
• 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
description
74ACT11620
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCAS060A − 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 V_CC
18 V_CC
17 B5
16 B6
15 B7
14 B8
13 GBA
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The
control function implementation allows for maximum flexibility in timing.
These devices allow 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 eanbling 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 complementary
for the 74ACT11620.
The 74ACT11620 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.
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Copyright  1993, Texas Instruments Incorporated
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