HD74LS245P 查看數據表（PDF） - Renesas Electronics

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HD74LS245P

Octal Bus Transceivers (with three-state outputs)

Renesas Electronics 

HD74LS245

Function Table

Note:

Enable G

L

L

H

H; high level, L; low level, X; irrelevant

Direction Control DIR

L

H

X

Operation

B data to A bus

A data to B bus

Isolation

Block Diagram

Enable G

Transceiver (1/8)

B

A

Direction

Control DIR

Absolute Maximum Ratings

Item

Symbol

Ratings

Supply voltage

VCC

7

Input voltage

DIR, G

VIN

7

A, B

VIN

5.5

Power dissipation

PT

400

Storage temperature

Tstg

–65 to +150

Operating temperature

Topr

–20 to +75

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

–15

24

75

Unit

V

V

V

mW

°C

°C

Unit

V

mA

mA

°C

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

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