Aeroflex Circuit Technology

SCD3750 REV A 8/31/98

Plainview NY (516) 694-6700

3

Standby Current

VIH = 2.4V (TTL), After 1 memory cycle,

RAS and CAS high

-

2

mA

VIH = Vcc - 0.05V (CMOS), After 1 memory

cycle, RAS and CAS high

-

1

mA

-

100

mA

AC Characteristics

*

Parameter

Sym

Min Max

Units

Access Time from Column-Address

-

35

ns

CAS Low Access Time from CAS

-

20

ns

Column Access Time from CAS Precharge

-

40

ns

Access Time from RAS

-

70

ns

OE Access Time

-

20

ns

0

15

ns

0

15

ns

* Valid data is presented at the outputs after all access times are satisfied but can go from the high-impedance

state to an invalid-data state prior to the specified access times as the outputs are driven when CAS goes low.

OE or CAS high.

AC Characteristics

Parameter

Sym

Min Max

Units

130

-

ns

45

-

ns

90

-

ns

70

200,000

ns

70

10,000

ns

20

10,000

ns

Pulse Duration, CAS High Precharge Time

10

-

ns

Pulse Duration, RAS High Precharge Time

50

-

ns

Pulse Duration, WE Low

15

-

ns

Setup Time, Column Address before CAS Low

0

-

ns

Setup Time, Row Address before RAS Low

0

-

ns

0

-

ns

Setup Time, WE High before CAS Low

0

-

ns

Setup Time, WE Low before CAS High

20

-

ns

Setup Time, WE Low before RAS High

20

-

ns

DC Characteristics (continued)

Parameter

Sym

Conditions

Min

Max

Units