IDT71256SA20PZI datasheet(2/8 Pages) IDT

Part #	IDT71256SA20PZI

Description	CMOS Static RAM 256K (32K x 8-Bit)

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Manufacturer	IDT [Integrated Device Technology]

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IDT71256SA

CMOS Static RAM 256K (32K x 8-Bit)

Commercial and Industrial Temperature Ranges

Absolute Maximum Ratings(1)

Pin Configurations

DIP/SOJ

Top View

RecommendedOperating

Temperature and Supply Voltage

Recommended DC Operating

Conditions

Truth Table(1,2)

TSOP

Top View

2948 drw 02a

22

23

24

25

26

27

28

1

2

3

4

5

7

6

21

20

19

18

17

16

15

14

13

12

11

10

9

8

A10

CS

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

A0

A1

A2

SO28-8

OE

A11

A9

A8

A13

A14

A7

A6

A5

A4

A3

A12

WE

VCC

,

WE

CS

2948 drw 02

5

6

7

8

9

10

11

12

GND

1

2

3

4

24

23

22

21

20

19

18

17

SO28-5

P28-2

13

14

28

27

26

25

A7

A6

A5

A4

A3

A2

A1

A0

I/O0

I/O1

I/O2

VCC

A14

A13

A8

A10

A11

OE

A12

I/O7

I/O6

I/O5

I/O4

I/O3

A9

16

15

NOTE:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS

may cause 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.

Symbol

Rating

Value

Unit

VCC

Supply Voltage

Relative to GND

-0.5 to +7.0

V

VTERM

Terminal Voltage

Relative to GND

-0.5 to VCC+0.5

V

TBIAS

Temperature Under Bias

-55 to +125

o

C

TSTG

Storage Temperature

-55 to +125

o

C

PT

Power Dissipation

1.0

W

IOUT

DC Output Current

50

mA

2948 tbl 02

NOTES:

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

2. VLC = 0.2V, VHC = VCC –0.2V.

3. Other inputs

≥VHC or ≤VLC.

CS

OE

WE

I/O

Function

LL

H

DATAOUT Read Data

LX

L

DATAIN

Write Data

L

H

High-Z

Outputs Disabled

H

X

High-Z

Deselected - Standby (ISB)

VHC(3)

X

High-Z

Deselected - Standby (ISB1)

2948 tbl 03

Grade

Temperature

GND

Vcc

Commercial

0OC to +70OC

0V

4.5V ± 5.5V

Industrial

-40OC to +85OC

0V

4.5V ± 5.5V

2948 tbl 01

NOTE:

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

Symbol

Parameter

Min.

Typ.

Max.

Unit

VCC

Supply Voltage

4.5

5.0

5.5

V

GND

Ground

0

V

VIH

Input High Voltage

2.2

____

VCC +0.5

V

VIL

Input Low Voltage

-0.5(1)

____

0.8

V

2948 tbl 04

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