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IDT71028S17Y

CMOS static RAM 1 meg (256K x 4-bit)

Integrated Device Technology 

IDT71028

CMOS STATIC RAM 1 MEG (256K x 4-BIT)

COMMERCIAL TEMPERATURE RANGE

PIN CONFIGURATION

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

CS

OE

GND

1

28 VCC

2

27 A17

3

26 A16

4

25 A15

5

24 A14

6

23 A13

7 SO28-6 22 A12

8

21 A11

9

20 NC

10

19 I/O3

11

18 I/O2

12

17 I/O1

13

16 I/O0

14

15

WE

SOJ

TOP VIEW

2966 drw 02

ABSOLUTE MAXIMUM RATINGS(1)

Symbol

Rating

Com’l.

Unit

VTERM(2) Terminal Voltage with

–0.5 to +7.0

V

Respect to GND

TA

Operating Temperature

0 to +70

°C

TBIAS Temperature Under

–55 to +125

°C

Bias

TSTG

Storage Temperature

–55 to +125

°C

PT

Power Dissipation

1.25

W

IOUT

DC Output Current

50

mA

NOTES:

2966 tbl 02

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.

2. VTERM must 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

VHC(3) X

X High-Z

NOTES:

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

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

3. Other inputs ≥VHC or ≤VLC.

Deselected - Standby (ISB)

Deselected - Standby (ISB1)

2966 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:

2966 tbl 03

1. This parameter is guaranteed by device characterization, but not prod-

uction tested.

RECOMMENDED DC OPERATING

CONDITIONS

Symbol Parameter

Min. Typ. Max. Unit

VCC

Supply Voltage

4.5 5.0 5.5 V

GND

Supply Voltage

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:

2966 tbl 04

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

DC ELECTRICAL CHARACTERISTICS

VCC = 5.0V ± 10%

Symbol

|ILI|

|ILO|

VOL

VOH

Parameter

Input Leakage Current

Output Leakage Current

Output Low Voltage

Output High Voltage

Test Condition

VCC = Max., VIN = GND to VCC

VCC = Max., CS = VIH, VOUT = GND to VCC

IOL = 8mA, VCC = Min.

IOH = –4mA, VCC = Min.

IDT71028

Min.

Max.

—

5

—

5

—

0.4

2.4

—

Unit

µA

µA

V

V

2966 tbl 05

9.4

2

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