IS62VV25616LL-70TI datasheet(5/10 Pages) ISSI

Part #	IS62VV25616LL-70TI

Description	256K x 16 LOW VOLTAGE, 1.8V ULTRA LOW POWER CMOS STATIC RAM

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

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5 / 10 page

Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774

5

Rev. B

08/07/02

IS62VV25616LL

ISSI®

READ CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)

-70

-85

Symbol

Parameter

Min.

Max.

Min.

Max.

Unit

tRC

Read Cycle Time

70

—

85

—

ns

tAA

Address Access Time

—

70

—

85

ns

tOHA

Output Hold Time

10

—

10

—

ns

tACE

CE Access Time

—

70

—

85

ns

tDOE

OE Access Time

—

35

—

40

ns

tHZOE(2)

OE to High-Z Output

—

25

—

25

ns

tLZOE(2)

OE to Low-Z Output

5

—

5

—

ns

tHZCE(2)

CE to High-Z Output

0

25

0

25

ns

tLZCE(2)

CE to Low-Z Output

10

—

10

—

ns

tBA

LB, UB Access Time

—

70

—

85

ns

tHZB

LB, UB to High-Z Output

0

25

0

25

ns

tLZB

LB, UB to Low-Z Output

0

—

0

—

ns

Notes:

1. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 0.9V, input pulse levels of 0.4 to 1.4V and

output loading specified in Figure 1.

2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.

POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)

-70

-85

Symbol

Parameter

Test Conditions

Min. Max.

Unit

ICC

Vdd Dynamic Operating VDD = Max.,

Com.

—

30

—

30

mA

Supply Current

IOUT = 0 mA, f = fMAX

Ind.

—

35

—

35

ICC1

Operating Supply

VDD = Max.,

Com.

—

3

—

3

mA

Current

IOUT = 0 mA, f = 1 MHZ

Ind.

—

3

—

3

ISB1

TTL Standby Current

VDD = Max.,

Com.

—

0.3

—

0.3

mA

(TTL Inputs)

VIN = VIH or VIL

Ind.

—

0.3

—

0.3

CE

≥ VIH , f = 0

OR

ULB Control

Vdd = Max., VIN = VIH or VIL

CE = VIL, f = 0, UB = VIH, LB = VIH

ISB2

CMOS Standby

VDD = 1.95V.,

Com.

—

10

—

10

µA

Current (CMOS Inputs)

CE

≥ VDD – 0.2V,

Ind.

—

10

—

10

VIN

≥ VDD – 0.2V, or

VIN

≤ 0.2V, f = 0

OR

ULB Control

VDD = 1.95V.,

CE = VIL

VIN

≤ 0.2V, f = 0; UB / LB = VDD – 0.2V

Note:

1. At f = fMAX, address and data inputs are cycling at the maximum frequency, f = 0 means no input lines change.

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