IDT70121 datasheet(2/12 Pages) IDT

Part #	IDT70121

Description	HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT

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Manufacturer	IDT [Integrated Device Technology]

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6.10

2

IDT 70121/70125S/L

HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT

COMMERCIAL TEMPERATURE RANGE

DESCRIPTION (Cont'd):

Fabricated using IDT’s CMOS high-performance

technology, these devices typically operate on only 500mW of

power. Low-power (L) versions offer battery backup data

PIN CONFIGURATIONS (1,2)

RECOMMENDED OPERATING TEMPERATURE

AND SUPPLY VOLTAGE

Grade

Ambient Temperature

GND

VCC

Commercial

0

°C to +70°C

0V

5.0V

± 10%

2654 tbl 02

RECOMMENDED DC

OPERATING CONDITIONS

Symbol

Parameter

Min.

Typ.

Max.

Unit

VCC

Supply Voltage

4.5

5

5.5

V

GND

Supply Voltage

0

0.0

V

VIH

Input High Voltage

2.2

–

6.0(2)

V

VIL

Input Low Voltage

–0.5

(1)

–

0.8

V

NOTES:

2654 tbl 03

1. VIL > -1.5V for pulse width less than 10ns.

2. VTERM must not exceed Vcc + 0.5V.

ABSOLUTE MAXIMUM RATINGS(1)

Symbol

Rating

Commercial

Unit

VTERM

(2)

Terminal Voltage

–0.5 to +7.0

V

with Respect to GND

TA

Operating

0 to +70

°C

Temperature

TBIAS

Temperature

–55 to +125

°C

Under Bias

TSTG

Storage

–55 to +125

°C

Temperature

IOUT

DC Output

50

mA

Current

NOTES:

2654 tbl 01

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 reliabilty.

2. VTERM must not exceed Vcc + 0.5V for more than 25% of the cycle time or

10ns maximum, and is limited to < 20mA for the period of VTERM > Vcc +

0.5V.

retention capability with each port typically consuming 200

µW

from a 2V battery.

The IDT70121/IDT70125 devices are packaged in a 52-pin

PLCC.

CAPACITANCE(1) (TA = +25

°C, f = 1.0MHz)

Symbol

Parameter

Condition

(2)

Max.

Unit

CIN

Input Capacitance

VIN = 3dV

9

pF

COUT

Output Capacitance

VOUT = 3dV

10

pF

2654 tbl 13

NOTES:

1. All Vcc pins must be connected to the power supply.

2. All GND pins must be connected to the ground supply.

3. This text does not indicate the orientation of the actual part-marking.

A9R

8

9

10

11

12

13

14

15

16

17

18

IDT70121/125

J52-1

19

A6L

A7L

A1L

A2L

A3L

A4L

A5L

A8L

I/O0L

I/O1L

I/O2L

I/O3L

46

45

44

43

42

41

40

39

38

37

36

35

A5R

A6R

A0R

A1R

A2R

A3R

A4R

A7R

A8R

I/O8R

I/O7R

INDEX

34

20

OER

A9L

2654 drw 02

PLCC

TOP VIEW(3)

NOTES:

1. This parameter is determined by device characterization but is not

production tested.

2. 3dV represents the interpolated capacitance when the input and output

signals switch from 0V to 3V or from 3V to 0V.

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