SN54-74LS540 ON Semiconductor, SN54-74LS540 Datasheet
SN54-74LS540
Manufacturer Part Number
SN54-74LS540
Description
OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
Manufacturer
ON Semiconductor
Datasheet
1.SN54-74LS540.pdf
(3 pages)
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
with the same functions as the LS240 and LS241, but with pinouts on the
opposite side of the package.
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.
GUARANTEED OPERATING RANGES
V CC
T A
I OH
I OL
The SN54 / 74LS540 and SN54 / 74LS541 are octal buffers and line drivers
These device types are designed to be used as memory address drivers,
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
Input Clamp Diodes Limit High-Speed Termination Effects
Symbol
Interface to Microprocessors
LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW)
Supply Voltage
Operating Ambient Temperature Range
Output Current — High
Output Current — Low
V CC
V CC
20
20
1
1
19
19
2
2
18
18
3
3
SN54 / 74LS540
SN54 / 74LS541
17
17
4
4
Parameter
16
16
5
5
15
15
6
6
14
14
7
7
13
13
8
8
FAST AND LS TTL DATA
12
12
9
9
GND
GND
11
10
11
10
5-1
54
74
54
74
54
74
54
74
4.75
– 55
Min
4.5
0
20
20
OCTAL BUFFER / LINE DRIVER
1
20
SN54/74LS540
SN54/74LS541
WITH 3-STATE OUTPUTS
1
ORDERING INFORMATION
LOW POWER SCHOTTKY
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXDW SOIC
Typ
1
5.0
5.0
25
25
Max
5.25
– 12
– 15
125
5.5
70
12
24
Ceramic
Plastic
CASE 751D-03
CASE 732-03
CASE 738-03
DW SUFFIX
CERAMIC
N SUFFIX
J SUFFIX
PLASTIC
SOIC
Unit
mA
mA
V
C
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SN54-74LS540 Summary of contents
Page 1
... 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 ...
Page 2
... SN54/74LS540 SN54/74LS541 BLOCK DIAGRAM LS540 ( (19 (2) (18 (3) (17 (4) (16 (5) (15 (6) (14 (7) (13 (8) (12 (9) (11 CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE Symbol Parameter Input HIGH Voltage V IL ...
Page 3
... SN54/74LS540 SN54/74LS541 AC CHARACTERISTICS ( Symbol Parameter P t PLH t PLH Propagation Delay Data to Output t PHL t PHL Output Enable Time p t PZH t PZH to HIGH Level Output Enable Time p t PZL t PZL to LOW Level Output Disable Time p t PHZ ...