SN54HC540, SN74HC540

OCTAL BUFFERS AND LINE DRIVERS

WITH 3STATE OUTPUTS

SCLS007D − MARCH 1984 − REVISED AUGUST 2003

1

POST OFFICE BOX 655303

Lines Directly or Up To 15 LSTTL Loads

Opposite Side From Outputs)

description/ordering information

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.

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.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N

Tube of 20

SN74HC540N

SN74HC540N

SOIC − DW

Tube of 25

SN74HC540DW

HC540

SOIC − DW

Reel of 2000

SN74HC540DWR

HC540

−40

°C to 85°C

SOP − NS

Reel of 2000

SN74HC540NSR

HC540

−40

°C to 85°C

SSOP − DB

Reel of 2000

SN74HC540DBR

HC540

Tube of 70

SN74HC540PW

TSSOP − PW

Reel of 2000

SN74HC540PWR

HC540

TSSOP − PW

Reel of 250

SN74HC540PWT

HC540

CDIP − J

Tube of 20

SNJ54HC540J

SNJ54HC540J

−55

°C to 125°C

CFP − W

Tube of 85

SNJ54HC540W

SNJ54HC540W

−55 C to 125 C

LCCC − FK

Tube of 55

SNJ54HC540FK

SNJ54HC540FK

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE1

A1

A2

A3

A4

A5

A6

A7

A8

GND

OE2

Y1

Y2

Y3

Y4

Y5

Y6

Y7

Y8

SN54HC540 ...J OR W PACKAGE

SN74HC540 . . . DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

32 1 20 19

910 11 1213

4

5

6

7

8

18

17

16

15

14

Y1

Y2

Y3

Y4

Y5

A3

A4

A5

A6

A7

SN54HC540 . . . FK PACKAGE

(TOP VIEW)

Copyright

 2003, Texas Instruments Incorporated

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 MILPRF38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.