SN54AHC541, SN74AHC541
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS261J – DECEMBER 1995 – REVISED NOVEMBER 1999
D
D
D
D
EPIC ™ (Enhanced-Performance Implanted
CMOS) Process
Operating Range 2-V to 5.5-V VCC
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs
SN54AHC541 . . . J OR W PACKAGE
SN74AHC541 . . . DB, DGV, DW, N, OR PW PACKAGE
(TOP VIEW)
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
description
The ’AHC541 octal buffers/drivers are ideal for
driving bus lines or buffer memory address
registers. These devices feature inputs and
outputs on opposite sides of the package to
facilitate printed circuit board layout.
A3
A4
A5
A6
A7
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
Y1
Y2
Y3
Y4
Y5
A8
GND
Y8
Y7
Y6
The 3-state control gate is a two-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 outputs provide noninverted data when
they are not in the high-impedance state.
OE2
A2
A1
OE1
VCC
SN54AHC541 . . . FK PACKAGE
(TOP VIEW)
To ensure the high-impedance state during power
up or power down, OE should be tied to VCC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
The SN54AHC541 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHC541 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer/driver)
INPUTS
OE1
OE2
A
OUTPUT
Y
L
L
L
L
H
L
L
H
H
X
X
Z
X
H
X
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
Copyright © 1999, 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.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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• DALLAS, TEXAS 75265
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