HD74LVC139 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LVC139

Dual 2-to-4-line Decoders / Demultiplexers

Hitachi -> Renesas Electronics 

HD74LVC139

Switching Characteristics

Item

Propagation delay time

Input capacitance

Output capacitance

Symbol VCC (V)

t PLH

2.7

t PHL

3.3±0.3

5.0±0.5

CIN

2.7

CO

2.7

Ta = –40 to 85°C

Min Typ Max Unit

— 7.0 10.0 ns

1.5 5.0 9.0 ns

— 3.5 7.5 ns

— 3.0 — pF

— 15.0 — pF

From (Input) To (Output)

G, A, B

Y0 to Y3

Test Circuit

VCC

Input

Pulse Generator

Zout = 50 Ω

VCC

A

Y0 to Y3

Output

CL =

450 Ω

50 pF

50 Ω Scope

B

G

Note:

1. CL includes probe and jig capacitance.

4

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