HD74LS257FPEL データシートの表示（PDF） - Renesas Electronics

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HD74LS257FPEL

Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs)

Renesas Electronics 

HD74LS257

Function Table

Note:

Inputs

OC

S

A

B

H

X

X

X

L

L

L

X

L

L

H

X

L

H

X

L

L

H

X

H

H; high level, L; low level, X; irrelevant, Z; off (high-impedance) state of a 3-state output

Block Diagram

Output

Control

1A

1B

1Y

2A

2B

2Y

3A

3B

3Y

4A

4B

4Y

Output

Z

L

H

L

H

S

Absolute Maximum Ratings

Item

Symbol

Ratings

Supply voltage

VCC

7

Input voltage

VIN

7

Output voltage (off-state)

VO (off)

5.5

Operating temperature

Topr

–20 to +75

Power dissipation

PT

400

Storage temperature

Tstg

–65 to +150

Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Symbol

VCC

IOH

IOL

Topr

Min

4.75

—

—

–20

Typ

5.00

—

—

25

Max

5.25

–2.6

8

75

Unit

V

V

V

°C

mW

°C

Unit

V

mA

mA

°C

Rev.3.00, Jul.15.2005, page 2 of 5

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