74LS156 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

74LS156

Dual 2-line-to-4-line Decoders / Demultiplexers (with open collector outputs)

Renesas Electronics 

HD74LS156

Switching Characteristics

Item

Propagation

delay time

Symbol

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Inputs

A, B, 2C,

1G or 2G

A, B, 2C,

1G or 2G

A or B

A or B

1C

1C

Output

Y

Level of

logic

2

Y

2

Y

3

Y

3

Y

3

Y

3

min.

—

—

—

—

—

—

(VCC = 5 V, Ta = 25°C)

typ. max. Unit Condition

25

40

34

51

31

46

ns

CL = 15 pF,

RL = 2 kΩ

34

51

32

48

32

48

Testing Method

Test Circuit

VCC

4.5V

P.G.

Zout = 50Ω

Input

1Y0

1G 1Y1

1C 1Y2

B 1Y3

A 2Y0

2C 2Y1

2G 2Y2

2Y3

Note: CL includes probe and jig capacitance.

RL

Output

CL

Rev.3.00, Jul.13.2005, page 4 of 6

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