DM74S257 データシートの表示（PDF） - Fairchild Semiconductor

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DM74S257

3-STATE Quad 1-of-2 Data Selector/Multiplexer

Fairchild Semiconductor 

Switching Characteristics

at VCC = 5V and TA = 25°C

Symbol

Parameter

tPLH

Propagation Delay Time

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

HIGH-to-LOW Level Output

tPLH

Propagation Delay Time

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

HIGH-to-LOW Level Output

tPZH

Output Enable Time

to HIGH Level Output

tPZL

Output Enable Time

to LOW Level Output

tPHZ

Output Disable Time

to HIGH Level Output (Note 5)

tPLZ

Output Disable Time

to LOW Level Output (Note 5)

Note 5: CL = 5 pF.

From (Input)

To (Output)

Data to Output

Data to Output

Select to Output

Select to Output

Output Control to Y

Output Control to Y

Output Control to Y

Output Control to Y

RL = 280Ω

CL = 15 pF

CL = 50 pF

Min

Max

Min

Max

7.5

11

6.5

10

15

16

15

16

19.5

23

21

24

8.5

14

Units

ns

ns

ns

ns

ns

ns

ns

ns

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