TM497BBK32H, TM497BBK32I 4194304 BY 32-BIT

TM893CBK32H, TM893CBK32I 8388608 BY 32-BIT

DYNAMIC RAM MODULES

SMMS675A – MARCH 1997 – REVISED APRIL 1997

8

POST OFFICE BOX 1443

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

temperature

PARAMETER

’497BBK32H / I-50

’893CBK32H / I-50

’497BBK32H / I-60

’893CBK32H / I-60

’497BBK32H / I-70

’893CBK32H / I-70

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

tAA

Access time from column address

25

30

35

ns

tCAC

Access time from CAS low

13

15

18

ns

tCPA

Access time from column precharge

30

35

40

ns

tRAC

Access time from RAS low

50

60

70

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

13

0

15

0

18

ns

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