SN54F257, SN74F257

QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS

WITH 3STATE OUTPUTS

SDFS065A − D2932, MARCH 1987 − REVISED OCTOBER 1993

2−2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

logic diagram (positive logic)

4Y

3Y

2Y

1Y

A/B

OE

4B

4A

3B

3A

2B

2A

1B

1A

4

2

3

7

5

6

9

11

10

12

14

13

1

15

Pin numbers shown are for the D, J, and N packages.

−0.5 V to 7 V

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Input voltage range (see Note 1)

−1.2 V to 7 V

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Input current range

−30 mA to 5 mA

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Voltage range applied to any output in the disabled or power-off state

−0.5 V to 5.5 V

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Voltage range applied to any output in the high state

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Current into any output in the low state: SN54F257

40 mA

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SN74F257

48 mA

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Operating free-air temperature range:

SN54F257

−55

°C to 125°C

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SN74F257

0

°C to 70°C

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Storage temperature range

−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.

NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.