74ALS540 SN74ALS540 Datasheet

74ALS540 Datasheet PDF, Equivalent


Part Number

74ALS540

Description

SN74ALS540

Manufacture

ETC

Total Page 6 Pages
Datasheet
Download 74ALS540 Datasheet


74ALS540
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025C – APRIL 1982 – REVISED JANUARY 1995
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
pnp 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 Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
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.
SN54ALS541 . . . J PACKAGE
SN74ALS540, SN74ALS541 . . . DW OR N PACKAGE
(TOP VIEW)
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 OE2
18 Y1
17 Y2
16 Y3
15 Y4
14 Y5
13 Y6
12 Y7
11 Y8
SN54ALS541 . . . FK PACKAGE
(TOP VIEW)
The 3-state control gate is a 2-input NOR 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
IOL is increased to 48 mA. There is no -1 version
of the SN54ALS541.
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
The SN54ALS541 is characterized for operation over the full military temperature range of – 55°C to 125°C. The
SN74ALS540 and SN74ALS541 are characterized for operation from 0°C to 70°C.
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 © 1995, Texas Instruments Incorporated
1

74ALS540
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025C – APRIL 1982 – REVISED JANUARY 1995
logic symbols
OE1
OE2
1
19
SN74ALS540
&
EN
OE1
OE2
1
19
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
18
Y1
17
Y2
16
Y3
15
Y4
14
Y5
13
Y6
12
Y7
11
Y8
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagrams (positive logic)
OE1
OE2
1
19
SN74ALS540
OE1
OE2
1
19
2
A1
18
Y1
2
A1
ALS541
&
EN
18
Y1
17
Y2
16
Y3
15
Y4
14
Y5
13
Y6
12
Y7
11
Y8
ALS541
18
Y1
To Seven Other Channels
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, TA: SN54ALS541 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74ALS540, SN74ALS541 . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features SN54ALS541, SN74ALS540, SN74ALS541 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS025C – APRIL 1982 – REV ISED JANUARY 1995 • 3-State Outputs Drive Bus Lines or Buffer Memory Addres s Registers • pnp Inputs Reduce dc Lo ading • Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs) • Package Options Include Plastic Sma ll-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs descripti on These octal buffers and line drivers are designed to have the performance o f the popular SN54ALS240A/ SN74ALS240A series and, at the same time, offer a p inout with inputs and outputs on opposi te sides of the package. This arrangeme nt greatly facilitates printed-circuitb oard layout. SN54ALS541 . . . J PACKAG E SN74ALS540, SN74ALS541 . . . DW OR N PACKAGE (TOP VIEW) OE1 A1 A2 A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 OE2 18 Y1 17 Y2 16 Y3 15 Y4 14 Y 5 13 Y6 12 Y7 11 Y8 SN54ALS541 . . . FK PACKAGE (TOP VIEW) A2 A1 OE1 VCC .
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