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IDT70121

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

Integrated Device Technology 

IDT70121/IDT70125

High-Speed 2K x 9 Dual-Port Static RAM with Busy & Interrupt

Industrial and Commercial Temperature Ranges

DC Electrical Characteristics Over the Operating

Temperature and Supply Voltage Range(1,4) (VCC = 5V ± 10%)

70121X25

70125X25

Com'l Only

70121X35

70125X35

Com'l

& Ind

Symbol

Parameter

Test Condition

Version

Typ.

Max.

Typ.

Max.

Unit

ICC

Dynamic Operating Current

(Both Ports Active)

CE = VIL, Outputs Disabled

f = fMAX(2)

COM'L

S

135

260

135

250

mA

L

135

220

135

210

IND

S

___

___

135

275

L

___

___

135

250

ISB1

Standby Current

CE"A" = CE"B" = VIH

(Both Ports - TTL Level Inputs)

f = fMAX(2)

COM'L

S

30

65

30

65

mA

L

30

45

30

45

IND

S

___

___

30

80

L

___

___

30

65

ISB2

Standby Current

(One Port - TTL Level Inputs)

CE"A" = VIL and CE"B" = VIH(5)

Active Port Outputs Disabled,

f=fMAX(2)

COM'L

S

80

175

80

165

mA

L

80

145

80

135

IND

S

___

___

80

190

L

___

___

80

165

ISB3

Full Standby Current (Both Ports CE"A" and CE"B" > VCC - 0.2V

- CMOS Level Inputs)

VIN > VCC - 0.2V or

VIN < 0.2V, f = 0(3)

COM'L

S

1.0

15

1.0

15

mA

L

0.2

5

0.2

5

IND

S

___

___

1.0

15

L

___

___

0.2

5

ISB4

Full Standby Current

CE"A" < 0.2V and

(One Port - CMOS Level Inputs) CE"B" > VCC - 0.2V(5)

VIN > VCC - 0.2V or VIN < 0.2V

Active Port Outputs Disabled,

f = fMAX(2)

COM'L

S

70

170

70

160

mA

L

70

140

70

130

IND

S

___

___

70

185

L

___

___

70

160

Symbol

ICC

Parameter

Dynamic Operating Current

(Both Ports Active)

Test Condition

CE = VIL, Outputs Disabled

f = fMAX(2)

ISB1

Standby Current

CE"A" = CE"B" = VIH

(Both Ports - TTL Level Inputs)

f = fMAX(2)

ISB2

Standby Current

CE"A" = VIL and CE"B" = VIH(5)

(One Port - TTL Level Inputs)

Active Port Outputs Disabled,

f=fM AX(2)

ISB3

Full Standby Current

(Both Ports - CMOS Level

Inputs)

CE"A" and CE"B" > VCC - 0.2V

VIN > VCC - 0.2V or

VIN < 0.2V, f = 0(3)

ISB4

Full Standby Current

CE"A" < 0.2V and

(One Port - CMOS Level Inputs) CE"B" > VCC - 0.2V(5)

VIN > VCC - 0.2V or VIN < 0.2V

Active Port Outputs Disabled,

f = fMAX(2)

70121X55

70125X55

Com'l Only

Version

Typ.

Max.

Unit

COM 'L

S

135

L

135

240

mA

200

IND

S

___

___

L

___

___

COM 'L

S

30

L

30

65

mA

45

IND

S

___

___

L

___

___

COM 'L

S

80

L

80

155

mA

125

IND

S

___

___

L

___

___

COM 'L

S

1.0

L

0.2

15

mA

5

IND

S

___

___

L

___

___

COM 'L

S

70

L

70

150

mA

120

IND

S

L

___

___

___

___

2654 tbl 06a

NOTES:

2654 tbl 06b

1. 'X' in part numbers indicates power rating (S or L).

2. At f = fMAX, address and control lines (except Output Enable) are cycling at the maximum frequency read cycle of 1/tRC, and using “AC TEST CONDITIONS” of

input levels of GND to 3V.

3. f = 0 means no address or control lines change. Applies only to inputs at CMOS level standby.

4. Vcc=5V, TA=+25°C for Typ, and is not production tested.

5. Port "A" may be either left or right port. Port "B" is opposite from port "A".

6.442

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