參數(shù)資料
型號(hào)： CY7C194
廠商： Cypress Semiconductor Corp.
英文描述： 64K x 4 Static RAM(64K x 4靜態(tài) RAM)
中文描述： 64K的× 4靜態(tài)存儲(chǔ)器（64K的靜態(tài)內(nèi)存× 4）
文件頁(yè)數(shù)： 3/11頁(yè)
文件大小： 203K
代理商： CY7C194
CY7C194
CY7C195
CY7C196
3
)
Electrical Characteristics
Over the Operating Range(continued)
7C194-20
7C195-20
7C196-20
Min.
7C194-25, 35, 45
7C195-25, 35
7C196-25, 35, 45
Min.
Parameter
Description
Test Conditions
V
CC
= Min., I
OH
=
4.0 mA
V
CC
= Min., I
OL
= 8.0 mA
Max.
Max.
Unit
V
OH
V
OL
V
IH
Output HIGH Voltage
2.4
2.4
V
Output LOW Voltage
0.4
0.4
V
Input HIGH Voltage
2.2
V
CC
+ 0.3V
2.2
V
CC
+0.3V
V
V
IL
I
IX
I
OZ
Input LOW Voltage
–
0.5
0.8
–
0.5
0.8
V
μ
A
μ
A
Input Load Current
GND < V
I
< V
CC
GND < V
O
< V
CC
,
Output Disabled
–
5
+5
–
5
+5
Output Leakage
Current
–
5
+5
–
5
+5
I
OS
Output Short
Circuit Current
[3]
V
CC
= Max.,
V
OUT
= GND
V
CC
=Max.,
I
OUT
=0 mA,
f=f
MAX
=1/t
RC
Max. V
CC
, CE
1,2
> V
IH
,
V
IN
> V
IH
or
V
IN
< V
IL
, f = f
MAX
Max. V
CC
, CE
1,2
> V
CC
–
0.3V,
V
IN
> V
CC
–
0.3V or
V
IN
< 0.3V, f = 0
–
300
–
300
mA
I
CC
V
CC
Operating
Supply Current
135
115
mA
I
SB1
Automatic CE
Power-Down Current
—
TTL Inputs
[4]
30
30
mA
I
SB2
Automatic CE
Power-Down Current
—
CMOS Inputs
[4]
15
15
mA
Capacitance
[5]
Parameter
Description
Test Conditions
T
A
= 25
°
C, f = 1 MHz,
V
CC
= 5.0V
Max.
8
10
Unit
pF
pF
C
IN
C
OUT
Input Capacitance
Output Capacitance
AC Test Loads and Waveforms
[6]
Notes:
5.
6.
Tested initially and after any design or process changes that may affect these parameters.
t
r
= < 3 ns for the -12 and -15 speeds. t
r
= < 5 ns for the -20 and slower speeds.
3.0V
5V
OUTPUT
R1 481
R2
255
30 pF
INCLUDING
JIG AND
SCOPE
GND
90%
10%
90%
10%
< t
r
< t
r
5V
OUTPUT
R1 481
R2
255
5 pF
INCLUDING
JIG AND
SCOPE
(a)
(b)
OUTPUT
1.73V
Equivalent to:
TH
é
EVENIN EQUIVALENT
167
ALL INPUT PULSES
C194-4
C194-5
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