DM74AS157 Просмотр технического описания (PDF) - Fairchild Semiconductor

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производитель

DM74AS157

Quad 1 of 2 Line Data Selector/Multiplexer

Fairchild Semiconductor 

DM74AS157 Switching Characteristics

over recommended operating free air temperature range

Symbol

Parameter

Conditions

tPLH

Propagation Delay Time,

VCC = 4.5V to 5.5V,

LOW-to-HIGH Level Output

CL = 50 pF,

tPHL

Propagation Delay Time,

RL = 500Ω

HIGH-to-LOW Level Output

From

To

Min

(Input) (Output)

Data

Y

1

Data

Y

1

tPLH

Propagation Delay Time,

LOW-to-HIGH Level Output

STROBE

Y

2

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

STROBE

Y

2

Select

Y

2

Select

Y

2

DM74AS158 Switching Characteristics

over recommended operating free air temperature range

Symbol

Parameter

Conditions

tPLH

Propagation Delay Time,

VCC = 4.5V to 5.5V,

LOW-to-HIGH Level Output

CL = 50 pF,

tPHL

Propagation Delay Time,

RL = 500Ω

HIGH-to-LOW Level Output

From

To

Min

(Input) (Output)

Data

Y

1

Data

Y

1

tPLH

Propagation Delay Time,

LOW-to-HIGH Level Output

STROBE

Y

2

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

STROBE

Y

2

Select

Y

2

Select

Y

2

Max

Units

6

ns

5.5

ns

10.5

ns

7.5

ns

11

ns

10

ns

Max

Units

5

ns

4.5

ns

6.5

ns

10

ns

9.5

ns

10.5

ns

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