6.42
IDT70121/IDT70125
High-Speed 2K x 9 Dual-Port Static RAM with Busy & Interrupt Industrial and Commercial Temperature Ranges
4
DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range
(1,4)
(VCC = 5V ± 10%)
NOTES:
1. 'X' in part numbers indicates power rating (S or L).
2. At f = f
MAX, 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, T
A=+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".
70121X25
70125X25
Com'l Only
70121X35
70125X35
Com'l
& Ind
Symbol Parameter Test Condition Version Typ. Max. Typ. Max. Unit
I
CC
Dynamic Operating Current
(Both Ports Active)
CE = V
IL
, Outputs Disabled
f = f
MAX
(2 )
COM'L S
L
135
135
260
220
135
135
250
210
mA
IND S
L
___
___
___
___
135
135
275
250
I
SB1
Standby Current
(Both Ports - TTL Level Inputs)
CE
"A"
= CE
"B"
= V
IH
f = f
MAX
(2 )
COM'L S
L
30
30
65
45
30
30
65
45
mA
IND S
L
___
___
___
___
30
30
80
65
I
SB2
Standby Current
(One Port - TTL Level Inputs)
CE
"A"
= V
IL
and CE
"B"
= V
IH
(5 )
Active Port Outputs Disabled,
f=f
MAX
(2 )
COM'L S
L
80
80
175
145
80
80
165
135
mA
IND S
L
___
___
___
___
80
80
190
165
I
SB3
Full Standby Current (Both Ports
- CMOS Level Inputs)
CE
"A"
and CE
"B"
> V
CC
- 0.2V
V
IN
> V
CC
- 0.2V or
VIN <
0.2V, f = 0
(3 )
COM'L S
L
1.0
0.2
15
5
1.0
0.2
15
5
mA
IND S
L
___
___
___
___
1.0
0.2
15
5
I
SB4
Full Standby Current
(One Port - CMOS Level Inputs)
CE
"A"
< 0.2V and
CE
"B"
> V
CC
- 0.2V
(5 )
V
IN
> V
CC
- 0.2V or V
IN
< 0.2V
Active Port Outputs Disabled,
f = f
MAX
(2 )
COM'L S
L
70
70
170
140
70
70
160
130
mA
IND
S
L
___
___
___
___
70
70
185
160
2654 tbl 06a
70121X55
70125X55
Com'l Only
Symbol Parameter Test Condition Version Typ. Max. Unit
I
CC
Dynamic Operating Current
(Both Ports Active)
CE = V
IL
, Outputs Disabled
f = f
MAX
(2)
COM'L S
L
135
135
240
200
mA
IND S
L
___
___
___
___
I
SB1
Standby Current
(Both Ports - TTL Level Inputs)
CE
"A"
= CE
"B"
= V
IH
f = f
MAX
(2)
COM'L S
L
30
30
65
45
mA
IND S
L
___
___
___
___
I
SB2
Standby Current
(One Port - TTL Level Inputs)
CE
"A"
= V
IL
and CE
"B"
= V
IH
(5)
Active Port Outputs Disabled,
f=f
MAX
(2)
COM'L S
L
80
80
155
125
mA
IND S
L
___
___
___
___
I
SB3
Full Standby Current
(Both Ports - CMOS Level
Inputs)
CE
"A"
and CE
"B"
> V
CC
- 0.2V
V
IN
> V
CC
- 0.2V or
V
IN
< 0.2V, f = 0
(3)
COM'L S
L
1.0
0.2
15
5
mA
IND S
L
___
___
___
___
I
SB4
Full Standby Current
(One Port - CMOS Level Inputs)
CE
"A"
< 0.2V and
CE
"B"
> V
CC
- 0.2V
(5)
V
IN
> V
CC
- 0.2V or V
IN
< 0.2V
Active Port Outputs Disabled,
f = f
MAX
(2)
COM'L S
L
70
70
150
120
mA
IND S
L
___
___
___
___
2654 tbl 06b
