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SCLS007D − MARCH 1984 − REVISED AUGUST 2003
SN54HC540 . . . J OR W PACKAGE
SN74HC540 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
D
D
Wide Operating Voltage Range of 2 V to 6 V
High-Current 3-State Outputs Drive Bus
Lines Directly or Up To 15 LSTTL Loads
D
D
D
D
D
Low Power Consumption, 80-µA Max I
Typical t = 8 ns
pd
6-mA Output Drive at 5 V
OE1
A1
A2
A3
A4
A5
A6
A7
A8
V
CC
OE2
Y1
1
2
3
4
5
6
7
8
9
20
19
18
CC
17 Y2
16 Y3
15 Y4
14 Y5
13 Y6
12 Y7
11 Y8
Low Input Current of 1 µA Max
Data Flow-Through Pinout (All Inputs on
Opposite Side From Outputs)
description/ordering information
GND 10
These octal buffers and line drivers feature the
performance of the popular ’HC240 series and
offer a pinout with inputs and outputs on opposite
sides of the package. This arrangement greatly
facilitates printed circuit board layout.
SN54HC540 . . . FK PACKAGE
(TOP VIEW)
The 3-state control gate is a 2-input NOR. If either
output-enable (OE1 or OE2) input is high, all eight
outputs are in the high-impedance state. The
’HC540 devices provide inverted data at the
outputs.
3
2
1
20 19
18
Y1
Y2
Y3
A3
A4
A5
A6
A7
4
5
6
7
8
17
16
15 Y4
14
Y5
9 10 11 12 13
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP − N
Tube of 20
Tube of 25
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 70
Reel of 2000
Reel of 250
Tube of 20
Tube of 85
Tube of 55
SN74HC540N
SN74HC540N
SN74HC540DW
SN74HC540DWR
SN74HC540NSR
SN74HC540DBR
SN74HC540PW
SN74HC540PWR
SN74HC540PWT
SNJ54HC540J
SOIC − DW
HC540
SOP − NS
HC540
HC540
−40°C to 85°C
SSOP − DB
TSSOP − PW
HC540
CDIP − J
CFP − W
LCCC − FK
SNJ54HC540J
SNJ54HC540W
SNJ54HC540FK
SNJ54HC540W
SNJ54HC540FK
−55°C to 125°C
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
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Copyright 2003, Texas Instruments Incorporated
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