74F280SCX 데이터 시트보기 (PDF) - Fairchild Semiconductor

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74F280SCX

9-Bit Parity Generator/Checker

Fairchild Semiconductor 

Unit Loading/Fan Out

Pin Names Description

I0–I8

∑O

∑E

Data Inputs

Odd Parity Output

Even Parity Output

U.L.

HIGH/LOW

1.0/1.0

50/33.3

50/33.3

Input IIH/IIL

Output IOH/IOL

20 µA/−0.6 mA

−1 mA/20 mA

−1 mA/20 mA

Truth Table

H = HIGH Voltage Level

L = LOW Voltage Level

Number of

HIGH Inputs

I0–I8

0, 2, 4, 6, 8

1, 3, 5, 7, 9

Outputs

∑ Even

∑ Odd

H

L

L

H

Logic Diagram

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

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