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IS61C25616AL

256K x 16 HIGH-SPEED CMOS STATIC RAM

Integrated Silicon Solution 

IS61C25616AL IS61C25616AS

IS64C25616AL IS64C25616AS

HIGH SPEED OPTION (IS61/64C25616AL)

POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)

Symbol Parameter

ICC1 VDD Operating

Supply Current

ICC2 VDD Dynamic Operating

Supply Current

Test Conditions

VDD = VDD MAX., CE = VIL

IOUT = 0 mA, f = 0

VDD = VDD MAX., CE = VIL

IOUT = 0 mA, f = fMAX

ISB1 TTL Standby Current

(TTL Inputs)

VDD = VDD MAX.,

VIN = VIH or VIL

CE ≥ VIH, f = 0

Com.

Ind.

Auto.

Com.

Ind.

Auto.

typ.(2)

Com.

Ind.

Auto.

-10 ns

Min. Max.

— 45

— 50

— 55

— 50

— 55

— 70

30

— 15

— 20

— 30

-12 ns

Min. Max.

Unit

— 45

mA

— 50

— 55

— 45

mA

— 50

— 60

25

— 15

mA

— 20

— 30

ISB2 CMOS Standby

VDD = VDD MAX.,

Current (CMOS Inputs) CE ≤ VDD – 0.2V,

VIN ≥ VDD – 0.2V, or

VIN ≤ 0.2V, f = 0

Com.

Ind.

Auto.

typ.(2)

—

8

— 12

— 20

2

—8

mA

— 12

— 20

Note:

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

2. Typical values are measured at VDD = 5V, TA = 25oC and not 100% tested.

LOW POWER OPTION (IS61/64C25616AS)

POWER SUPPLY CHARACTERISTICS(1) (Over Operating Range)

Symbol Parameter

Test Conditions

-25 ns

Min. Max.

Unit

ICC

Average operating

CE = VIL,

Com.

— 10

mA

Current

VDD = Max.,

Ind.

— 15

I OUT= 0 mA, f = 0

Auto.

— 20

ICC1 VDDDynamicOperating VDD=Max., CE =VIL

Com.

— 25

mA

Supply Current

IOUT = 0 mA, f = fMAX

Ind.

— 30

VIN = VIH or VIL

Auto.

— 40

typ.(2)

15

ISB1 TTLStandbyCurrent VDD=Max.,

Com.

—1

mA

(TTL Inputs)

VIN = VIH or VIL, CE ≥ VIH,

Ind.

— 1.5

f=0

Auto.

—2

ISB2 CMOSStandby

VDD = Max.,

Com.

— 0.8

mA

Current(CMOSInputs) CE≥ VDD–0.2V,

Ind.

— 0.9

VIN ≥ VDD – 0.2V,

Auto.

—2

or VIN ≤ VSS + 0.2V, f = 0

typ.(2)

0.2

Note:

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

2. Typical values are measured at VDD = 5V, TA = 25oC and not 100% tested.

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

5

Rev. C

03/21/2008

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