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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

EDI88130CS

March 2002

Rev. 11

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

Parameter

Symbol

25ns

35ns

45ns

55ns

Units

JEDEC

Alt.

Min

Max

Min

Max

Min

Max

Min

Max

Read Cycle Time

25

35

45

55

ns

Address Access Time

25

35

45

55

ns

Chip Enable Access Time

25

35

45

55

ns

Chip Enable Access Time

25

35

45

55

ns

Chip Enable to Output in Low Z (1)

5

5

5

5

5

5

5

5

ns

ns

Chip Disable to Output in Low Z (1)

10

10

15

15

20

20

20

20

ns

ns

Output Hold from Address Change

0000

ns

Output Enable to Output Valid

10

15

20

25

ns

Output Enable to Output in Low Z (1)

0000

ns

Output Disable to Output in High Z(1)

10

15

20

20

ns

Chip Enable to Power Up (1)

0

0

0

0

0

0

0

0

ns

ns

Chip Enable to Power Down (1)

25

25

35

35

45

45

55

55

ns

ns

1. This parameter is guaranteed by design but not tested.

AC CHARACTERISTICS – READ CYCLE (15 to 20ns)

Parameter

Symbol

15ns*

17ns

20ns

Units

JEDEC

Alt.

Min

Max

Min

Max

Min

Max

Read Cycle Time

15

17

20

ns

Address Access Time

15

17

20

ns

Chip Enable Access Time

15

15

17

17

20

20

ns

ns

Chip Enable to Output in Low Z (1)

5

5

5

5

5

5

ns

ns

Chip Disable to Output in Low Z (1)

6

6

7

7

8

8

ns

ns

Output Hold from Address Change

333

ns

Output Enable to Output Valid

667

ns

Output Enable to Output in Low Z (1)

000

ns

Output Disable to Output in High Z(1)

568

ns

Chip Enable to Power Up (1)

0

0

0

0

0

0

ns

ns

Chip Enable to Power Down (1)

15

15

17

17

20

20

ns

ns

1. This parameter is guaranteed by design but not tested.

* 15ns access time is advanced information, contact factory for availability.

AC CHARACTERISTICS – READ CYCLE (25 to 55ns)