OE1

OE2

To Seven Other Channels

A1

Y1

1

19

2

18

SN54AHCT540

SN74AHCT540

SCLS268M – OCTOBER 1995 – REVISED JUNE 2013

www.ti.com

LOGIC DIAGRAM (POSITIVE LOGIC)

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

(1)

VALUE

UNIT

–0.5 to 7

V

(2)

–0.5 to 7

V

(2)

V

–20

mA

±20

mA

±25

mA

±75

mA

DB package

70

DGV package

92

DW package

58

Package thermal impedance,

(3)

°C/W

N package

69

NS package

60

PW package

83

–65 to 150

°C

(1)

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating

conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

(3)

The package thermal impedance is calculated in accordance with JESD 51-7.

2

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