TM497FBK32, TM497FBK32S 4 194 304 BY 32-BIT

TM893GBK32, TM893GBK32S 8 388 608 BY 32-BIT

EXTENDED DATA OUT DYNAMIC RAM MODULES

SMMS668 – NOVEMBER 1996

9

POST OFFICE BOX 1443

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature

PARAMETER

’497FBK32-60

’893GBK32-60

’497FBK32-70

’893GBK32-70

’497FBK32-80

’893GBK32-80

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

tAA

Access time from column address

30

35

40

ns

tCAC

Access time from CAS low

15

18

20

ns

tCPA

Access time from column precharge

35

40

45

ns

tRAC

Access time from RAS low

60

70

80

ns

tCLZ

CAS to output in low-impedance state

0

0

0

ns

tOH

Output disable time from start of CAS high

3

3

3

ns

tOFF

Output disable time after CAS high (see Note 6)

0

15

0

18

0

20

ns

NOTE 6: tOFF is specified when the output is no longer driven.

EDO timing requirements over recommended ranges of supply voltage and operating free-air

temperature

’497FBK32-60

’893GBK32-60

’497FBK32-70

’893GBK32-70

’497FBK32-80

’893GBK32-80

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

tHPC

Cycle time, EDO page mode read or write

25

30

35

ns

tPRWC

Cycle time, EDO read-write

80

90

100

ns

tCSH

Hold time, CAS after RAS

50

55

60

ns

tDOH

Hold time, output after RAS

3

3

3

ns

tCAS

Pulse duration, CAS

10

10 000

12

10 000

15

10 000

ns

tWPE

Pulse duration, W (output disable only)

5

5

5

ns

tCP

Precharge time, CAS

5

5

5

ns