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IDT71128S12Y

CMOS Static RAM 1 Meg (256K x 4-Bit) Revolutionary Pinout

Integrated Device Technology 

IDT71128 CMOS Static RAM

1 Meg (256K x 4-bit) Revolutionary Pinout

Pin Configuration

NC

A0

A1

A2

A3

CS

I/O0

VCC

GND

I/O1

WE

A4

A5

A6

A7

NC

1

32

2

31

3

30

4

29

5

28

6 SO32-3 27

7

26

8

25

9

24

10

23

11

22

12

21

13

20

14

19

15

18

16

17

A17

A16

A15

A14

A13

OE

I/O3

GND

VCC

I/O2

A12

A11

A10

A9

A8

NC

SOJ

3483 drw 02

Top View

Commercial and Industrial Temperature Ranges

Absolute Maximum Ratings(1)

Symbol

VTERM(2)

Rating

Terminal Voltage with

Respect to GND

Value

Unit

-0.5 to +7.0(2)

V

TA

Operating Temperature

0 to +70

oC

TBIAS

Temperature

Under Bias

-55 to +125

oC

TSTG

Storage

Temperature

-55 to +125

oC

PT

Power Dissipation

1.25

W

IOUT

DC Output Current

50

mA

NOTES:

3483 tbl 02

1. StressesgreaterthanthoselistedunderABSOLUTEMAXIMUMRATINGSmaycause

permanent damage to the device. This is a stress rating only and functional operation

of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect reliability.

2. VTERMmust not exceed Vcc + 0.5V.

Truth Table(1,2)

CS

OE

WE

I/O

Function

L

L

H

DATAOUT Read Data

L

X

L

DATAIN Write Data

L

H

H

High-Z Output Disabled

H

X

X

High-Z Deselected - Standby (ISB)

VHC(3)

X

X

High-Z Deselected - Standby (ISB1)

NOTES:

1. H = VIH, L = VIL, x = Don't care.

2. VLC = 0.2V, VHC = VCC -0.2V.

3. Other inputs ≥VHC or ≤VLC.

3483 tbl 01

Capacitance

(TA = +25°C, f = 1.0MHz, SOJ package)

Symbol

Parameter(1)

Conditions Max. Unit

CIN Input Capacitance

VIN = 3dV

8 pF

CI/O I/O Capacitance

VOUT = 3dV

8 pF

NOTE:

3483 tbl 03

1. This parameter is guaranteed by device characterization, but is not production tested.

Recommended Operating

Temperature and Supply Voltage

Grade

Temperature

GND

VCC

Commercial

0°C to +70°C

0V

5.0V ± 10%

Industrial

–40°C to +85°C

0V

5.0V ± 10%

3483 tbl 04

Recommended DC Operating

Conditions

Symbol

Parameter

Min. Typ. Max. Unit

VCC Supply Voltage

4.5

5.0

5.5

V

GND Ground

0

0

0

V

VIH Input High Voltage

2.2

____ VCC +0.5 V

VIL Input Low Voltage

-0.5(1)

____

0.8

V

NOTE:

1. VIL (min.) = –1.5V for pulse width less than 10ns, once per cycle.

3483 tbl 05

6.422

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