HD74LVC139 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HD74LVC139

Dual 2-to-4-line Decoders / Demultiplexers

Renesas Electronics 

HD74LVC139

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.

Waveforms

Notes:

Input

In phase output

10 %

tr

90 %

Vref

tPLH

Vref

tPHL

tf

90 %

Vref

10 %

tPHL

Vref

tPLH

VIH

GND

VOH

VOL

Out of

phase output

Vref

Vref

VOH

VOL

Symbol

VCC = 2.7 V,

3.3±0.3 V

VCC = 5.0±0.5 V

VIH

2.7 V

VCC

Vref

1.5 V

50%VCC

1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform : PRR = 10 MHz, duty cycle 50%

Rev.3.00 Jul. 23, 2004 page 4 of 5

Share Link: