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PDF CY7C147 Data sheet ( Hoja de datos )
| Número de pieza | CY7C147 | |
| Descripción | 4K x 1 STATIC RAM | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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7c147: 12/4/89
Revision: Thursday, November 11, 1993
www.DataSheet4U.com
Features
D Automatic powerĆdown when deseĆ
lected
D CMOS for optimum speed/power
ĊD High speed
25 ns
D Low active power
Ċ 440 mW (commercial)
Ċ 605 mW (military)
ĊD Low standby power
55 mW
D TTLĆcompatible inputs and outputs
D Capable of withstanding greater than
2001V electrostatic discharge
Functional Description
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CY7C147
4K x 1 Static RAM
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Logic Block Diagram
A0
A1
A2
A3
A6
A7
INPUT BUFFER
64 x 64
ARRAY
COLUMN
DECODER
POWER
DOWN
A4 A5 A8 A9 A10 A11
DI
DO
CE
WE
C147Ć1
Pin Configuration
DIP
Top View
A0
A1
A2
A3
A4
A5
DO
WE
GND
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VCC
A6
A7
A8
A9
A10
A11
DI
CE
C147Ć2
Selection Guide
Maximum Access Time ((ns))
Maximum Operating Current ((mA))
Maximum Standby Current ((mA))
Commercial
Military
Commercial
Military
Commercial
Military
7C147-25
25
90
15
7C147-35
35
35
80
110
10
10
7C147-45
45
45
80
110
10
10
Cypress Semiconductor Corporation D 3901 North First Street D San JoseDeceDmberC1A989551-34ReviDsed N4o0v8e-m9b4e3r-12969020
1 page  
7c147: 12/4/89
Revision: Thursday, November 11, 1993
www.DataSheet4U.com
CY7C147
Switching Waveforms (continued)
Write Cycle No. 2 (CE Controlled) [9, 13]
ADDRESS
CE
tSA
WE
tWC
tSCE
tAW
tPWE
tHA
DATA IN
DATA OUT
DATA UNDEFINED
tSD
DATAIN VALID
tHZWE
Notes:
13. If CE goes HIGH simultaneously with WE HIGH, the output reĆ
mains in a highĆimpedance state.
Typical DC and AC Characteristics
NORMALIZED SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.4
1.2
1.0
ICC
0.8
0.6
VIN = 5.0V
TA = 25_C
0.4
0.2
0.0
4.0
ISB
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
6.0
NORMALIZED SUPPLY CURRENT
vs. AMBIENT TEMPERATURE
1.2
1.0
ICC
0.8
0.6
0.4
0.2
ISB
VCC = 5.0V
VIN = 5.0V
0.0
-55
25
125
AMBIENT TEMPERATURE ( _C)
tHD
HIGH IMPEDANCE
C147Ć8
OUTPUT SOURCE CURRENT
vs. OUTPUT VOLTAGE
120
100
80
VCC = 5.0V
60 TA = 25_C
40
20
0
0.0
1.0
2.0
3.0
OUTPUT VOLTAGE (V)
4.0
NORMALIZED ACCESS TIME
vs. SUPPLY VOLTAGE
1.4
1.3
1.2
1.1
1.0
TA = 25_C
0.9
0.8
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
6.0
NORMALIZED ACCESS TIME
vs. AMBIENT TEMPERATURE
1.6
1.4
1.2
1.0
0.8
VCC = 5.0V
0.6
-55
25
125
AMBIENT TEMPERATURE ( _C)
OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
160
140
120
100
80
_60 VCC = 5.0V
TA = 25 C
40
20
0
0.0
1.0
2.0
3.0
4.0
OUTPUT VOLTAGE (V)
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet CY7C147.PDF ] | |
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