DM74S138 Просмотр технического описания (PDF) - Fairchild Semiconductor

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Компоненты Описание

производитель

DM74S138

Decoder/Demultiplexer

Fairchild Semiconductor 

DM74S138 Switching Characteristics

at VCC = 5V and TA = 25°C

Symbol

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Parameter

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

From (Input)

To (Output)

Select to Output

Select to Output

Select to Output

Select to Output

Enable to Output

Enable to Output

Enable to Output

Enable to Output

Levels

of Delay

2

2

3

3

2

2

3

3

DM74S139 Switching Characteristics

at VCC = 5V and TA = 25°C

Symbol

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Parameter

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

From (Input)

To (Output)

Select to Output

Select to Output

Select to Output

Select to Output

Enable to Output

Enable to Output

Levels

of Delay

2

2

3

3

2

2

RL = 280Ω

CL = 15 pF

CL = 50 pF

Min

Max

Min

Max

7

9

10.5

14

12

14

12

15

8

10

11

14

11

13

11

14

Units

ns

ns

ns

ns

ns

ns

ns

ns

RL = 280Ω

CL = 15 pF

CL = 50 pF

Min

Max

Min

Max

7.5

10

10

13

12

13

12

15

8

10

10

13

Units

ns

ns

ns

ns

ns

ns

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