SN54LV138, SN74LV138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCLS190D – FEBRUARY 1993 – REVISED JULY 1996

4

POST OFFICE BOX 655303

– 0.5 V to 7 V

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±20 mA

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±50 mA

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±25 mA

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±50 mA

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1.3 W

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DB package

0.55 W

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PW package

0.5 W

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–65

°C to 150°C

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† 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.

NOTES:

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

2. This value is limited to 7 V maximum.

3. The maximum package power dissipation is calculated using a junction temperature of 150

°C and a board trace length of 750 mils.

recommended operating conditions (see Note 4)

SN54LV138

SN74LV138

UNIT

MIN

MAX

MIN

MAX

UNIT

VCC

Supply voltage

2.7

5.5

2.7

5.5

V

VIH

High level input voltage

VCC = 2.7 V to 3.6 V

2

2

V

VIH

High-level input voltage

VCC = 4.5 V to 5.5 V

3.15

3.15

V

VIL

Low level input voltage

VCC = 2.7 V to 3.6 V

0.8

0.8

V

VIL

Low-level input voltage

VCC = 4.5 V to 5.5 V

1.65

1.65

V

VI

Input voltage

0

VCC

0

VCC

V

VO

Output voltage

0

VCC

0

VCC

V

IOH

High level output current

VCC = 2.7 V to 3.6 V

–6

–6

mA

IOH

High-level output current

VCC = 4.5 V to 5.5 V

–12

–12

mA

IOL

Low level output current

VCC = 2.7 V to 3.6 V

6

6

mA

IOL

Low-level output current

VCC = 4.5 V to 5.5 V

12

12

mA

∆t/∆v

Input transition rise or fall rate

0

100

0

100

ns / V

TA

Operating free-air temperature

–55

125

–40

85

°C

NOTE 4: Unused inputs must be held high or low to prevent them from floating.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.