SN54HC540, SN74HC540
OCTAL BUFFERS AND LINE DRIVERS
WITH 3 STATE OUTPUTS
SCLS007D 鈭?MARCH 1984 鈭?REVISED AUGUST 2003
D
Wide Operating Voltage Range of 2 V to 6 V
D
High-Current 3-State Outputs Drive Bus
D
D
D
D
D
Lines Directly or Up To 15 LSTTL Loads
Low Power Consumption, 80-碌A(chǔ) Max I
CC
Typical t
pd
= 8 ns
鹵6-mA
Output Drive at 5 V
Low Input Current of 1
碌A(chǔ)
Max
Data Flow-Through Pinout (All Inputs on
Opposite Side From Outputs)
SN54HC540 . . . J OR W PACKAGE
SN74HC540 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
description/ordering information
These octal buffers and line drivers feature the
performance of the popular 鈥橦C240 series and
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. If either
output-enable (OE1 or OE2) input is high, all eight
outputs are in the high-impedance state. The
鈥橦C540 devices provide inverted data at the
outputs.
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
SN54HC540 . . . FK PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
OE1
V
CC
OE2
Y1
Y2
Y3
Y4
Y5
TOP-SIDE
MARKING
ORDERING INFORMATION
TA
PDIP 鈭?N
SOIC 鈭?DW
SOP 鈭?NS
鈭?0擄C to 85擄C
SSOP 鈭?DB
PACKAGE鈥?/div>
Tube of 20
Tube of 25
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 70
TSSOP 鈭?PW
CDIP 鈭?J
鈭?5 C 125擄C
鈭?5擄C to 125 C
CFP 鈭?W
LCCC 鈭?FK
Reel of 2000
Reel of 250
Tube of 20
Tube of 85
Tube of 55
ORDERABLE
PART NUMBER
SN74HC540N
SN74HC540DW
SN74HC540DWR
SN74HC540NSR
SN74HC540DBR
SN74HC540PW
SN74HC540PWR
SN74HC540PWT
SNJ54HC540J
SNJ54HC540W
SNJ54HC540FK
SNJ54HC540J
SNJ54HC540W
SNJ54HC540FK
HC540
HC540
HC540
HC540
鈥?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.
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.
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.
Copyright
錚?/div>
2003, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
A8
GND
Y8
Y7
Y6
SN74HC540N
A2
A1
1
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