SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS

SDAS025D – APRIL 1982 – REVISED MARCH 2002
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
C0068 pnp Inputs Reduce dc Loading
C0068 Data Flowthrough Pinout (All Inputs on
Opposite Side From Outputs)
description
These octal buffers and line drivers are designed
to have the performance of the popular
SN54ALS240A/SN74ALS240A series and, at
the same time, offer a pinout with inputs and
outputs on opposite sides of the package. This
arrangement greatly facilitates printed circuit
board layout.
The 3-state control gate is a 2-input NOR gate
such that, if either output-enable (OE1 or OE2)
input is high, all eight outputs are in the
high-impedance state.
The SN74ALS540 provides inverted data. The
’ALS541 provide true data at the outputs.
The -1 versions of SN74ALS540 and
SN74ALS541 are identical to the standard
versions, except that the recommended
maximum I
OL
is increased to 48 mA. There is no
-1 version of the SN54ALS541.
Copyright  2002, 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.

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.
SN54ALS541 ...J PACKAGE
SN74ALS540 ...DW, N, OR NS PACKAGE
SN74ALS541 . . . DB, DW, N, OR NS PACKAGE
(TOP VIEW)
SN54ALS541 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
3212019
910111213
4
5
6
7
8
18
17
16
15
14
Y1
Y2
Y3
Y4
Y5
A3
A4
A5
A6
A7
A2 A1 OE1
Y7 Y6
OE2
A8
GND
Y8
V
CC
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.