HY628400A Series

Rev 07 / Apr. 2001

4

AC CHARACTERISTICS

(Normal)/-25

°C to 85°C (Extended) /-40°C to 85°C (Industrial), unless otherwise specified.

55ns

70ns

85ns

Min.

Max.

Min.

Max.

Min

Max.

1

tRC

Read Cycle Time

55

-

70

-

85

-

ns

2

tAA

Address Access Time

-

55

-

70

-

85

ns

3

tACS

Chip Select Access Time

-

55

-

70

-

85

ns

4

tOE

Output Enable to Output Valid

-

25

-

40

-

45

ns

5

tCLZ

Chip Select to Output in Low Z

10

-

10

-

10

-

ns

6

tOLZ

Output Enable to Output in Low Z

5

-

5

-

5

-

ns

7

tCHZ

Chip Deselecting to Output in High Z

0

20

0

25

0

30

ns

8

tOHZ

Out Disable to Output in High Z

0

20

0

25

0

30

ns

9

tOH

Output Hold from Address Change

10

-

10

-

10

-

ns

10

tWC

Write Cycle Time

55

-

70

-

85

-

ns

11

tCW

Chip Selection to End of Write

45

-

60

-

70

-

ns

12

tAW

Address Valid to End of Write

45

-

60

-

70

-

ns

13

tAS

Address Set-up Time

0

-

0

-

0

-

ns

14

tWP

Write Pulse Width

40

-

50

-

55

-

ns

15

tWR

Write Recovery Time

0

-

0

-

0

-

ns

16

tWHZ

Write to Output in High Z

0

20

0

25

0

30

ns

17

tDW

Data to Write Time Overlap

25

-

30

-

40

-

ns

18

tDH

Data Hold from Write Time

0

-

0

-

0

-

ns

19

tOW

Output Active from End of Write

5

-

5

-

5

-

ns

AC TEST CONDITIONS

(Normal)/-25

°C to 85°C (Extended) /-40°C to 85°C (Industrial), unless otherwise specified.

Parameter

Value

Input Pulse Level

0.8V to 2.4V

Input Rise and Fall Time

5ns

Input and Output Timing Reference Level

1.5V

Output Load

tCLZ,tOLZ,tCHZ,tOHZ,tWHZ

CL =

5pF + 1TTL Load

Others

CL = 100pF + 1TTL Load

AC TEST LOADS

CL(1)

TTL

Note

1. Including jig and scope capacitance

READ CYCLE

WRITE CYCLE

Symbol

Parameter

#

Unit