74F245MTC(2008) 查看數據表（PDF） - Fairchild Semiconductor

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74F245MTC
(Rev.:2008)

Octal Bidirectional Transceiver with 3-STATE Outputs

Fairchild Semiconductor 

Connection Diagram

Logic Symbols

IEEE/IEC

Truth Table

Inputs

OE

T/R

L

L

L

H

H

X

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Output

Bus B Data to Bus A

Bus A Data to Bus B

High Z State

Unit Loading/Fan Out

Pin Names

OE

T/R

A0–A7

B0–B7

Description

Output Enable Input (Active LOW)

Transmit/Receive Input

Side A Inputs or

3-STATE Outputs

Side B Inputs or

3-STATE Outputs

U.L.

HIGH/LOW

1.0/2.0

1.0/2.0

3.5/1.083

150/40 (38.3)

3.5/1.083

600/106.6 (80)

Input IIH/IIL

Output IOH/IOL

20µA/–1.2mA

20µA/–1.2mA

70 µA/–0.65mA

–3 mA/24mA (20mA)

70µA/–0.65mA

–12mA/64mA (48mA)

©1988 Fairchild Semiconductor Corporation

74F245 Rev. 1.4.0

2

www.fairchildsemi.com

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