DM74ALS257 datasheet(4/7 Pages) FAIRCHILD

部件名	DM74ALS257

功能描述	3-STATE Quad 1-of-2-Line Data Selector/Multiplexer

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制造商	FAIRCHILD [Fairchild Semiconductor]

网页	http://www.fairchildsemi.com

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Switching Characteristics DM74ALS257

over recommended operating free air temperature range

Switching Characteristics DM74ALS258

over recommended operating free air temperature range

Symbol

Parameter

Conditions

From

To

Min

Max

Units

tPLH

Propagation Delay Time

VCC = 4.5V to 5.5V

Data

Any Y

2

10

ns

LOW-to-HIGH Level Output

CL = 50 pF

tPHL

Propagation Delay Time

RL = 500Ω

Data

Any Y

2

12

ns

HIGH-to-LOW Level Output

tPLH

Propagation Delay Time

Select

Any Y

4

18

ns

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

Select

Any Y

5

22

ns

HIGH-to-LOW Level Output

tZH

Output Enable Time

Output

Any Y

4

16

ns

to HIGH Level

Control

tZL

Output Enable Time

Output

Any Y

5

18

ns

to LOW Level

Control

tHZ

Output Disable Time

Output

Any Y

2

10

ns

from HIGH Level

Control

tLZ

Output Disable Time

Output

Any Y

3

15

ns

from LOW Level

Control

Symbol

Parameter

Conditions

From

To

Min

Max

Units

tPLH

Propagation Delay Time

VCC = 4.5V to 5.5V

Data

Any Y

2

8

ns

LOW-to-HIGH Level Output

CL = 50 pF

tPHL

Propagation Delay Time

RL = 500Ω

Data

Any Y

2

7

ns

HIGH-to-LOW Level Output

tPLH

Propagation Delay Time

Select

Any Y

3

20

ns

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

Select

Any Y

5

25

ns

HIGH-to-LOW Level Output

tZH

Output Enable Time

Output

Any Y

5

18

ns

to HIGH Level

Control

tZL

Output Enable Time

Output

Any Y

5

18

ns

to LOW Level

Control

tHZ

Output Disable Time

Output

Any Y

2

10

ns

from HIGH Level

Control

tLZ

Output Disable Time

Output

Any Y

3

18

ns

from LOW Level

Control

类似零件编号 - DM74ALS257

制造商	部件名	数据表	功能描述
Fairchild Semiconductor	DM74ALS251	76Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74ALS251	80Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74ALS251M	80Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74ALS251N	80Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74ALS251SJ	80Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer

More results

类似说明 - DM74ALS257

制造商	部件名	数据表	功能描述
Fairchild Semiconductor	DM74S257	47Kb / 5P	3-STATE Quad 1-of-2 Data Selector/Multiplexer
	DM74S157	53Kb / 5P	Quad 1 of 2 Line Data Selector/Multiplexer
	DM74ALS157	67Kb / 6P	Quad 1-of-2 Line Data Selector/Multiplexer
	DM74AS157	72Kb / 7P	Quad 1 of 2 Line Data Selector/Multiplexer
	DM74AS257	60Kb / 6P	3-STATE Quad 1 of 2 Line Data Selector/Multiplexers
	DM74AS257	291Kb / 8P	3-STATE Quad 1 of 2 Line Data Selector/Multiplexers
	DM74ALS251	76Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74LS251	58Kb / 6P	3-STATE 1-of-8 Line Data Selector/Multiplexer
	DM74ALS251N	80Kb / 7P	3-STATE 1-of-8 Line Data Selector/Multiplexer
NXP Semiconductors	74F723A	104Kb / 14P	Quad 2-to-1 data selector multiplexer 3-State 1990 Dec 13