參數(shù)資料
型號： NTE6664
廠商： NTE Electronics, Inc.
英文描述： Integrated Circuit 64K-Bit Dynamic RAM
中文描述： 集成電路64K的位動態(tài)隨機(jī)存儲器
文件頁數(shù)： 2/5頁
文件大?。?/td> 39K
代理商： NTE6664
Recommended Operating Conditions:
(Note 2, T
A
= 0 to +70
°
C unless otherwise specified)
Parameter
Supply Voltage (Operating Voltage Range)
Symbol
V
CC
V
SS
V
IH
V
IL
Min
4.5
0
2.4
–
1.0
Typ
5.0
0
–
–
Max
5.5
0
6.5
0.8
Unit
V
V
V
V
Logic 1 Voltage, All Inputs
Logic 0 Voltage, All Inputs (Note 3)
Note 2. All voltages referenced to V
SS
.
Note 3. The device will withstand undershoots to the
–
2V level with a maximum pulse width 0f 20ns
at the
–
1.5V level. This is periodically sampled rather than 100% tested.
DC Characteristics:
(V
CC
= 5V
±
10%, T
A
= 0 to +70
°
C unless otherwise specified)
Parameter
Symbol
V
CC
Power Supply Current
I
CC1
V
CC
Power Supply Current (Standby)
I
CC2
V
CC
Power Supply Current During
RAS only Refresh Cycles
Input Leakage Current
Any Input Except REFRESH
REFRESH Input Current
I
lkg(F)
Output Leakage Current
I
lkg(O)
Output Logic 1 Voltage
V
OH
Output Logic 0 Voltage
V
OL
Test Conditions
Min
–
–
–
Typ
–
–
–
Max
55
4
45
Unit
mA
mA
mA
t
RC
= 270ns, Note 4
RAS = CAS = V
IH
t
RC
= 270ns, Note 4
I
CC3
I
lkg(L)
V
SS
< V
in
< V
CC
–
–
10
μ
A
V
SS
< V
in
< V
CC
CAS at Logic 1, 0
≤
V
out
≤
5.5V
I
out
=
–
4mA
I
out
= 4mA
–
–
–
–
–
–
20
10
–
0.4
μ
A
μ
A
V
V
2.4
–
Note 4. Current is a function of cycle rate and output loading; maximum current is measured at the
fastest cycle rate with the output open.
Capacitance:
(V
CC
= 5V
±
10%, f = 1MHz, T
A
= +25
°
C, Note 5, Periodically Sampled Rather
Than 100% Tested)
Parameter
Symbol
C
in
Test Conditions
Min
–
–
–
Typ
3
6
5
Max
5
8
7
Unit
pF
Input Capacitance
RAS, CAS, WRITE, REFRESH
Output Capacitance
A0
–
A7, D
Q
C
out
CAS = V
IH
to Disable Output
pF
Note 5. Capacitance measured with a Boonton Meter or effective capacitance calculated from the
equation: C = I
t/
V.
Read, Write, and Read
–
Modify
–
Write Cycles:
(V
CC
= 5V
±
10%, T
A
= 0 to +70
°
C unless other
–
wise specified, Notes 6, 7, and 8)
Parameter
Symbol
t
RC
t
RWC
t
RAC
t
CAC
t
OFF
t
RP
t
RAS
t
CAS
Test Conditions
Note 9, Note 10
Note 9, Note 10
Note 11, Note 13
Note 12, Note 13
Note 19
Min
270
280
–
–
0
100
150
75
Typ
–
–
–
–
–
–
–
–
Max
–
–
150
75
30
–
10000
10000
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Random Read or Write Cycle Time
Read
–
Write Cycle Time
Access Time from RAS
Access Time from CAS
Output Buffer and Turn
–
Off Delay
RAS Precharge Time
RAS Pulse Width
CAS Pulse Width
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