IS41LV1665 datasheet(9/19 Pages) ICSI

Part #	IS41LV1665

Description	64K x16 bit Dynamic RAM with Fast Page Mode

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Manufacturer	ICSI [Integrated Circuit Solution Inc]

Direct Link	http://www.icsi.com.tw

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IC41C1665

IC41LV1665

Integrated Circuit Solution Inc.

9

DR031-0A 10/17/2001

AC CHARACTERISTICS(1,2,3,4,5,6)

(Recommended Operating Conditions unless otherwise noted.)

-25

-30

-35

-40

Symbol Parameter

Min. Max.

Units

tACH

Column-Address Setup Time to

CAS

15

—

15

—

15

—

15

—

ns

Precharge during WRITE Cycle

tOEH

OE Hold Time from WE during

4

—

4

—

4

—

5

—

ns

READ-MODIFY-WRITEcycle(18)

tDS

Data-In Setup Time(15, 22)

0

—

0

—

0

—

0

—

ns

tDH

Data-In Hold Time(15,22)

5

—

5

—

5

—

5

—

ns

tRWC

READ-MODIFY-WRITECycleTime

65

—

85

—

95

—

105

—

ns

tRWD

RAS to WE Delay Time during

34

—

46

—

51

—

56

—

ns

READ-MODIFY-WRITECycle(14)

tCWD

CAS to WE Delay Time(14,20)

17

—

25

—

26

—

27

—

ns

tAWD

Column-Address to

WE Delay Time(14)

21

—

32

—

34

—

36

—

ns

tPC

Fast Page Mode READ or WRITE

15

—

20

—

23

—

25

—

ns

CycleTime(24)

tRASP

Fast Page Mode

RAS Pulse Width

25

10k

30

10K

35

10K

40

10K

ns

tCPA

Access Time from

CAS Precharge(15)

—14

—

18

—20

—

22

ns

tPRWC

Fast Page Mode READ-WRITE Cycle Time(24)

37

—

42

—

49

—

52

—

ns

tOFF

Output Buffer Turn-Off Delay from

3

15

3

15

3

15

3

15

ns

CAS or RAS(13,15,19,29)

tCLCH

Last

CAS going LOW to First CAS

4

—

9

—

10

—

11

—

ns

returning HIGH(23)

tCSR

CAS Setup Time (CBR REFRESH)(30,20)

5

—

10

—

10

—

10

—

ns

tCHR

CAS Hold Time (CBR REFRESH)(30,21)

7

—

10

—

10

—

10

—

ns

tORD

OE Setup Time prior to RAS during

0

—

0

—

0

—

0

—

ns

HIDDENREFRESHCycle

tREF

Refresh Period (256 Cycles)

—4

—

4

—

4

—

4ms

tT

Transition Time (Rise or Fall)(2,3)

150

1

50

150

1

50

ns

AC TEST CONDITIONS

Output load:

Two TTL Loads and 50 pF (Vcc = 5.0V ±10%)

One TTL Load and 50 pF (Vcc = 3.3V ±10%)

Input timing reference levels: VIH = 2.4V, VIL = 0.8V (Vcc = 5.0V ±10%);

VIH = 2.0V, VIL = 0.8V (Vcc = 3.3V ±10%)

Output timing reference levels: VOH = 2.0V, VOL = 0.8V (Vcc = 5V ±10%, 3.3V ±10%)

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