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CY7C1541V18, CY7C1556V18
CY7C1543V18, CY7C1545V18
Document Number: 001-05389 Rev. *F Page 20 of 28
Maximum Ratings
Exceeding maximum ratings may impair the useful life of the
device. These user guidelines are not tested.
Storage Temperature ................................. –65°C to +150°C
Ambient Temperature with Power Applied.. –55°C to +125°C
Supply Voltage on V
DD
Relative to GND........–0.5V to +2.9V
Supply Voltage on V
DDQ
Relative to GND.......–0.5V to +V
DD
DC Applied to Outputs in High-Z ........–0.5V to V
DDQ
+ 0.3V
DC Input Voltage
[14]
..............................–0.5V to V
DD
+ 0.3V
Current into Outputs (LOW) ........................................20 mA
Static Discharge Voltage (MIL-STD-883, M. 3015)... >2001V
Latch-up Current .................................................... >200 mA
Operating Range
Range
Ambient
Temperature (T
A
) V
DD
[18]
V
DDQ
[18]
Commercial 0°C to +70°C 1.8 ± 0.1V 1.4V to
V
DD
Industrial –40°C to +85°C
Electrical Characteristics
DC Electrical Characteristics
Over the Operating Range
[15]
Parameter Description Test Conditions Min Typ Max Unit
V
DD
Power Supply Voltage 1.7 1.8 1.9 V
V
DDQ
IO Supply Voltage 1.4 1.5 V
DD
V
V
OH
Output HIGH Voltage Note 19 V
DDQ
/2 – 0.12 V
DDQ
/2 + 0.12 V
V
OL
Output LOW Voltage Note 20 V
DDQ
/2 – 0.12 V
DDQ
/2 + 0.12 V
V
OH(LOW)
Output HIGH Voltage I
OH
= −0.1 mA, Nominal Impedance V
DDQ
– 0.2 V
DDQ
V
V
OL(LOW)
Output LOW Voltage I
OL
= 0.1 mA, Nominal Impedance V
SS
0.2 V
V
IH
Input HIGH Voltage
[14]
V
REF
+ 0.1 V
DDQ
+ 0.15 V
V
IL
Input LOW Voltage
[14]
–0.15 V
REF
– 0.1 V
I
X
Input Leakage Current GND ≤ V
I
≤ V
DDQ
−2 2 μA
I
OZ
Output Leakage Current GND ≤ V
I
≤ V
DDQ,
Output Disabled −2 2 μA
V
REF
Input Reference Voltage
[21]
Typical Value = 0.75V 0.68 0.75 0.95 V
I
DD
[22]
V
DD
Operating Supply V
DD
= Max,
I
OUT
= 0 mA,
f = f
MAX
= 1/t
CYC
375 MHz x8 1300 mA
x9 1300
x18 1300
x36
1370
333 MHz x8 1200 mA
x9 1200
x18
1200
x36
1230
300 MHz x8 1100 mA
x9 1100
x18 1100
x36
1140
Notes
18.Power up: Assumes a linear ramp from 0V to V
DD
(min) within 200 ms. During this time V
IH
< V
DD
and V
DDQ
< V
DD
.
19.Output are impedance controlled. I
OH
= −(V
DDQ
/2)/(RQ/5) for values of 175 Ω <= RQ <= 350 Ω.
20.Output are impedance controlled. I
OL
= (V
DDQ
/2)/(RQ/5) for values of 175 Ω <= RQ <= 350 Ω.
21.V
REF
(min) = 0.68V or 0.46V
DDQ
, whichever is larger, V
REF
(max) = 0.95V or 0.54V
DDQ
, whichever is smaller.
22.The operation current is calculated with 50% read cycle and 50% write cycle.
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