CY7C4255V/CY7C4265V
CY7C4275V/CY7C4285V
Document #: 38-06012 Rev. *A Page 4 of 20
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 V
CC
+0.5V
DC Voltage Applied to Outputs
in High Z State .........................................–0.5V to V
CC
+0.5V
DC Input Voltage ..........................................−0.5V to V
CC
+0.5V
Output Current into Outputs (LOW)............................. 20 mA
Static Discharge Voltage............................................ >2001V
(per MIL–STD–883, Method 3015)
Latch-Up Current.....................................................>200 mA
Notes:
1. The Voltage on any input or I/O pin cannot exceed the power pin during power-up.
2. T
A
is the “instant on” case temperature.
3. V
CC
range for commercial -10 ns is 3.3V ±150mV.
4. See the last page of this specification for Group A subgroup testing information.
5. The V
IH
and V
IL
specifications apply for all inputs except WXI, RXI. The WXI, RXI pin is not a TTL input. It is connected to either RXO, WXO of the
previous device or V
SS
.
6. Input signals switch from 0V to 3V with a rise/fall time of less than 3 ns, clocks and clock enables switch at 20 MHz, while data inputs switch at 10 MHz. Outputs
are unloaded.
7. All inputs = V
CC
– 0.2V, except RCLK and WCLK (which are at frequency = 0 MHz), and FL/RT which is at V
SS
. All outputs are unloaded.
8. Tested initially and after any design changes that may affect these parameters.
Operating Range
Range
Ambient
Temperature V
CC
[3]
Commercial 0°C to +70°C 3.3V ±300 mV
Industrial
[2]
–40°C to +85°C 3.3V ±300 mV
Electrical Characteristics Over the Operating Range
[4]
7C4255/65/75/
85V-10
7C4255/65/75/
85V-15
7C4255/65/75/
85V-25
Parameter Description Test Conditions Min. Max. Min. Max. Min. Max. Unit
V
OH
Output HIGH
Voltage
V
CC
= Min., I
OH
= –1.0 mA
V
CC
= 3.0V. I
OH
= –2.0
mA
2.4 2.4 2.4 V
V
OL
Output LOW
Voltage
V
CC
= Min.,I
OL
= 4.0 mA
V
CC
= 3.0V.,I
OL
= 8.0 mA
0.4 0.4 0.4 V
V
IH
[5]
Input HIGH
Voltage
2.0 V
CC
2.0 V
CC
2.0 V
CC
V
V
IL
[5]
Input LOW
Voltage
–0.5 0.8 –0.5 0.8 –0.5 0.8 V
I
IX
Input Leakage
Current
V
CC
= Max. –10 +10 –10 +10 –10 +10 µA
I
OZL
I
OZH
Output OFF,
High Z Current
OE > V
IH
,
V
SS
< V
O
< V
CC
–10 +10 –10 +10 –10 +10 µA
I
CC1
[6]
Active Power
Supply Current
Com’l 30 30 30 mA
Ind 35 mA
I
SB
[7]
Average Standby
Current
Com’l 4 4 4 mA
Ind 4 mA
Capacitance
[8]
Parameter Description Test Conditions Max. Unit
C
IN
Input Capacitance T
A
= 25°C, f = 1 MHz,
V
CC
= 3.3V
5 pF
C
OUT
Output Capacitance 7 pF
