SN54BCT640_07 Datasheet, PDF (1/15 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Substantially Reduces Standby Current
• Outputs Have Undershoot-Protection
Circuitry
• Power-Up High-Impedance State
• Buffered Control Inputs to Reduce DC
Loading Effects
• 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)
SN54BCT640, SN74BCT640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS025C – SEPTEMBER 1988 – REVISED APRIL 1994
SN54BCT640 . . . J OR W PACKAGE
SN74BCT640 . . . DW OR N PACKAGE
(TOP VIEW)
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 V_CC
19 OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
description
The ′BCT640 bus transceiver is designed for
asynchronous communication between data
buses. These devices transmit 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 output-enable (OE) input can be
used to disable the device so that the buses are
effectively isolated.
The SN54BCT640 is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74BCT640 is characterized for
operation from 0°C to 70°C.
SN54BCT640 . . . 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
OE DIR
OPERATION
L
L
B data to A bus
L
H A data to B bus
H
X
Isolation
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 © 1994, Texas Instruments Incorporated
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