HD74LS138FP データシートの表示（PDF） - Renesas Electronics

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HD74LS138FP

3-Line-to-8-Line Decoders / Demultiplexers

Renesas Electronics 

HD74LS138

Electrical Characteristics

Item

Input voltage

Symbol

VIH

VIL

VOH

Output voltage

VOL

IIH

Input current

IIL

II

Short-circuit output

current

IOS

Supply current

ICC

Input clamp voltage

VIK

Note: * VCC = 5 V, Ta = 25°C

min.

2.0

—

2.7

—

—

—

—

—

–20

—

—

typ.*

—

—

—

—

—

—

—

—

—

6.3

—

max.

—

0.8

—

0.4

0.5

20

–0.4

0.1

–100

10

–1.5

Unit

V

V

V

V

µA

mA

mA

mA

mA

V

(Ta = –20 to +75 °C)

Condition

VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,

IOH = –400 µA

IOL = 4 mA VCC = 4.75 V, VIH = 2 V,

IOL = 8 mA VIL = 0.8 V

VCC = 5.25 V, VI = 2.7 V

VCC = 5.25 V, VI = 0.4 V

VCC = 5.25 V, VI = 7 V

VCC = 5.25 V

VCC = 5.25 V, Outputs enabled and open

VCC = 4.75 V, IIN = –18 mA

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Levels

Item

Symbol Inputs Output of delay min.

typ.

max.

Unit Condition

tPLH

tPHL

Binary

select

Y

2

—

—

13

20

27

41

ns

ns

tPLH

A, B, C

—

18

27

ns

3

Propagation

tPLH

—

26

39

ns

CL = 15 pF,

delay time

tPLH

Enable

—

12

18

ns

RL = 2 kΩ

2

tPHL

G2A, G2B

Y

—

21

32

ns

tPLH

Enable

—

17

26

ns

3

tPLH

G1

—

25

38

ns

Rev.3.00, Jul.13.2005, page 3 of 7

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