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SN54LS540 Datasheet(PDF) 1 Page - Motorola, Inc

Part No. SN54LS540
Description  OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

SN54LS540 Datasheet(HTML) 1 Page - Motorola, Inc

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FAST AND LS TTL DATA
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
The SN54/ 74LS540 and SN54 / 74LS541 are octal buffers and line drivers
with the same functions as the LS240 and LS241, but with pinouts on the
opposite side of the package.
These device types are designed to be used as memory address drivers,
clock drivers and bus-oriented transmitters / receivers. These devices are
especially useful as output ports for the microprocessors, allowing ease of
layout and greater PC board density.
Hysteresis at Inputs to Improve Noise Margin
PNP Inputs Reduce Loading
3-State Outputs Drive Bus Lines
Inputs and Outputs Opposite Side of Package, Allowing Easier
Interface to Microprocessors
Input Clamp Diodes Limit High-Speed Termination Effects
LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW)
18
17
16 15 14 13
1
2
3
4
5
6
7
20 19
8
VCC
9
10
GND
12
11
SN54 / 74LS540
SN54 / 74LS541
18
17
16 15 14 13
1
2
3
4
5
6
7
20 19
8
VCC
9
10
GND
12
11
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
– 55
0
25
25
125
70
°C
IOH
Output Current — High
54
74
– 12
– 15
mA
IOL
Output Current — Low
54
74
12
24
mA
SN54/74LS540
SN54/74LS541
OCTAL BUFFER / LINE DRIVER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN
Plastic
SN74LSXXXDW SOIC
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
DW SUFFIX
SOIC
CASE 751D-03


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