IDT71028 データシートの表示（PDF） - Integrated Device Technology

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IDT71028

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

Integrated Device Technology 

IDT71028 CMOS Static RAM

1 Meg (256K x 4-Bit)

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

7

23

SO28-6 22

A13

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

2966 drw 02

SOJ

Top View

Commercial and Industrial Temperature Ranges

Absolute Maximum Ratings(1)

Symbol

Rating

Value Unit

VTERM(2) Terminal Voltage with Respect to GND –0.5 to +7.0 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:

2966 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. 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 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.

2966 tbl 01

Recommended Operating

Temperature and Supply Voltage

Grade

Commercial

Industrial

Temperature

0OC to +70OC

–40OC to +85OC

VSS

VSS

0V

5.0V ± 10%

0V

5.0V ± 10%

2966 tbl 05

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

2966 tbl 03

NOTE:

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

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.

2966 tbl 04

6.422

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