CY7C138 CYPRESS [Cypress Semiconductor], CY7C138 Datasheet - Page 4
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CY7C138
Manufacturer Part Number
CY7C138
Description
4K x 8/9 Dual-Port Static RAM
Manufacturer
CYPRESS [Cypress Semiconductor]
Datasheet
1.CY7C138.pdf
(15 pages)
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AC Test Loads and Waveforms
Note:
]
Electrical Characteristics
Capacitance
OUTPUT
V
V
V
V
I
I
I
I
I
I
I
Parameter
C
C
7.
OUTPUT
IX
OZ
CC
SB1
SB2
SB3
SB4
OH
OL
IH
IL
IN
OUT
C = 30 pF
Tested initially and after any design or process changes that may affect these parameters.
(a) Normal Load (Load 1)
Parameter
Load (Load 2)
Output HIGH Voltage
Output LOW Voltage
Input LOW Voltage
Input Leakage Current
Output Leakage Current
Operating Current
Standby Current
(Both Ports TTL Levels)
Standby Current
(One Port TTL Level)
Standby Current
(Both Ports CMOS Levels)
Standby Current
(One Port CMOS Level)
[7]
C = 30 pF
Description
5V
R1=893
R2=347
C138-6
Input Capacitance
Output Capacitance
C138-3
Over the Operating Range (continued)
Description
GND
3.0V
< 3 ns
V
V
GND < V
Output Disabled, GND < V
V
I
Outputs Disabled
CE
f = f
CE
f = f
Both Ports
CE and CE
V
or V
One Port
CE
V
V
Port Outputs, f = f
OUT
OUTPUT
IN
IN
IN
CC
CC
CC
L
L
L
10%
> V
> V
< 0.2V, Active
IN
MAX
MAX
= Max.,
or CE
= 0 mA,
= Min., I
= Min., I
and CE
and CE
C=30pF
(b) Thé venin Equivalent ( Load 1)
< 0.2V, f = 0
CC
CC
[6]
[6]
I
– 0.2V
R
– 0.2V or
< V
R
Test Conditions
ALL INPUT PULSES
> V
> V
90%
R
R
OH
OL
T
V
CC
> V
> V
CC
A
CC
CC
MAX
R
= 4.0 mA
= 25 C, f = 1 MHz,
= –4.0 mA
[6]
TH
– 0.2V,
IH
IH
= 5.0V
4
– 0.2V,
,
,
[6]
=250
Test Conditions
O
< V
Com’l
Ind
Com’l
Ind
Com’l
Ind
Com’l
Ind
Com’l
Ind
V
90%
TH
CC
10%
=1.4V
< 3 ns
C138-4
C138-7
Min.
–10
–10
2.4
2.2
OUTPUT
7C138-35
7C139-35
C = 5 pF
Max.
+10
+10
160
180
100
100
110
0.4
0.8
30
40
15
30
90
(c) Three-State Delay (Load 3)
Max.
10
15
Min.
–10
–10
2.4
2.2
7C138-55
7C139-55
CY7C138
CY7C139
5V
Max.
+10
+10
160
180
100
100
110
0.4
0.8
30
40
15
30
90
R1=893
R2=347
Unit
pF
pF
C138-5
Unit
mA
mA
mA
mA
mA
V
V
V
V
A
A