CY7C455
CY7C456
CY7C457
Document #: 38-06003 Rev. *A
Page 3 of 23
Maximum Ratings[1]
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature ................................–65
°C to +150°C
Ambient Temperature with
Power Applied............................................–55
°C to +125°C
Supply Voltage to Ground Potential ............... –0.5V to +7.0V
DC Voltage Applied to Outputs
in High Z State ............................................... –0.5V to +7.0V
DC Input Voltage............................................ –3.0V to +7.0V
Output Current into Outputs (LOW) .............................20 mA
Static Discharge Voltage............................................ >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current ..................................................... >200 mA
Selection Guide
7C455/6/7–12
7C455/6/7–14
7C455/6/7–20
7C455/6/7–30
Maximum Frequency (MHz)
83.3
71.4
50
33.3
Maximum Cascadable Frequency
83.3
71.4
50
33.3
Maximum Access Time (ns)
9
10
15
20
Minimum Cycle Time (ns)
12
14
20
30
Minimum Clock HIGH Time (ns)
5
6.5
9
12
Minimum Clock LOW Time (ns)
5
6.5
9
12
Minimum Data or Enable Set-Up (ns)
4
5
6
7
Minimum Data or Enable Hold (ns)
0
0
0
0
Maximum Flag Delay (ns)
9
10
15
20
Maximum Current
(mA)
Commercial
160
160
140
120
Industrial
180
180
160
140
Selection Guide (continued)
CY7C455
CY7C456
CY7C457
Density
512 x 18
1,024 x 18
2,048 x 18
OE, Depth Cascadable
Yes
Yes
Yes
Package
52-Pin PLCC/PQFP
52-Pin PLCC/PQFP
52-Pin PLCC/PQFP
Operating Range
Range
Ambient
Temperature
VCC
Commercial
0
°C to +70°C
5V
± 10%
Industrial[2]
–40
°C to +85°C
5V
± 10%
Notes:
1.
The Voltage on any input or I/O pin cannot exceed the power pin during
power-up.
2.
TA is the “instant on” case temperature.
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