SN54BCT620A_16 Datasheet, PDF (1/13 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
• P-N-P Inputs Reduce DC Loading
• ESD Protection Exceeds 2000 V
Per MIL-STD-883C, Method 3015
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Plastic and Ceramic 300-mil DIPs (J, N)
description
The ′BCT620A bus transceiver is designed for
asynchronous communication between data
buses. The control function implementation allows
for maximum flexibility in timing. The ′BCT620A
provides inverted data at its outputs.
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
output-enable (OEAB and OEBA) inputs.
The output-enable inputs can be used to disable
the device so that the buses are effectively
isolated. The dual-enable configuration gives the
transceivers the capability of storing data by
simultaneously enabling OEAB and OEBA. When
both OEAB and OEBA 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. In this way, each output
reinforces its input in this configuration.
The SN54BCT620A is characterized for operation
over the full military temperature range of − 55°C
to 125°C. The SN74BCT620A is characterized for
operation from 0°C to 70°C.
SN54BCT620A, SN74BCT620A
OCTAL BUS TRANSCEIVERS
WITH 3ĆSTATE OUTPUTS
SCBS001B − SEPTEMBER 1987 − REVISED NOVEMBER 1993
SN54BCT620A . . . J OR W PACKAGE
SN74BCT620A . . . DW OR N PACKAGE
(TOP VIEW)
OEAB 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 V_CC
19 OEBA
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
SN54BCT620A . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
A3 4
18 B1
A4 5
17 B2
A5 6
16 B3
A6 7
15 B4
A7 8
14 B5
9 10 11 12 13
FUNCTION TABLE
INPUTS
OEBA OEAB
OPERATION
L
L
B data to A bus
B data to A bus,
L
H
A data to B bus
H
L
Isolation
H
H
A data to B bus
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  1993, Texas Instruments Incorporated
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