SN54BCT540 Datasheet, PDF (1/5 Pages) Texas Instruments – OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
• 3-State Outputs Drive Bus Lines or Buffer
Memory-Address Registers
• P-N-P Inputs Reduce DC Loading
• Data Flow-Through Pinout (All Inputs on
Opposite Side From Outputs)
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Plastic (N) and Ceramic (J) 300-mil DIPs
description
The SN54BCT540 and SN74BCT540A octal
buffers and line drivers are ideal for driving bus
lines or buffer memory-address registers. The
devices feature inputs and outputs on opposite
sides of the package that facilitate printed-circuit-
board layout.
The 3-state control gate is a 2-input AND gate with
active-low inputs so that if either output-enable
(OE1 or OE2) input is high, all corresponding
outputs are in the high-impedance state.
The SN54BCT540 is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74BCT540A is characterized for
operation from 0°C to 70°C.
SN54BCT540, SN74BCT540A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS012D – JULY 1988 – REVISED SEPTEMBER 1994
SN54BCT540 . . . J OR W PACKAGE
SN74BCT540A . . . DW OR N PACKAGE
(TOP VIEW)
OE1 ₁
A1 ₂
A2 ₃
A3 ₄
A4 ₅
A5 ₆
A6 7
A7 8
A8 9
GND 10
20 ^V_CC
19 ^OE2
18 ^Y1
17 ^Y2
16 ^Y3
15 ^Y4
14 Y5
13 Y6
12 Y7
11 Y8
SN54BCT540 . . . FK PACKAGE
(TOP VIEW)
A3
3 2 1 20 19
4
18
Y1
A4 ₅
17 ^Y2
A5 6
16 Y3
A6 7
15 Y4
A7 8
14 Y5
9 10 11 12 13
FUNCTION TABLE
INPUTS
OE1 OE2 A
OUTPUT
Y
L
L
L
H
L
L
H
L
H
X
X
Z
X
H
X
Z
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 © 1994, Texas Instruments Incorporated
1