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CY7C1546V18, CY7C1557V18
CY7C1548V18, CY7C1550V18
Document Number: 001-06550 Rev. *E 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
[15]
..............................–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
[15]
V
DDQ
[15]
Commercial 0°C to +70°C 1.8 ± 0.1V 1.4V to
V
DD
Industrial –40°C to +85°C
Electrical Characteristics
Over the Operating Range
[13]
DC Electrical Characteristics
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 17 V
DDQ
/2 – 0.12 V
DDQ
/2 + 0.12 V
V
OL
Output LOW Voltage Note 18 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 V
REF
+ 0.1 V
DDQ
+ 0.15 V
V
IL
Input LOW Voltage –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
[19]
Typical Value = 0.75V 0.68 0.75 0.95 V
I
DD
[20]
V
DD
Operating Supply V
DD
= Max,
I
OUT
= 0 mA,
f = f
MAX
= 1/t
CYC
375MHz (x8) 1300 mA
(x9) 1300
(x18) 1300
(x36) 1300
333MHz (x8) 1200 mA
(x9) 1200
(x18) 1200
(x36) 1200
300MHz (x8) 1100 mA
(x9) 1100
(x18) 1100
(x36) 1100
Notes
15. Overshoot: V
IH
(AC) < V
DDQ
+ 0.3V (pulse width less than t
CYC
/2). Undershoot: V
IL
(AC) > − 0.3V (pulse width less than t
CYC
/2).
16. 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
.
17. Outputs are impedance controlled. I
OH
= –(V
DDQ
/2)/(RQ/5) for values of 175Ω < RQ < 350Ω.
18. Outputs are impedance controlled. I
OL
= (V
DDQ
/2)/(RQ/5) for values of 175Ω < RQ < 350Ω.
19. V
REF
(min) = 0.68V or 0.46V
DDQ
, whichever is larger. V
REF
(max) = 0.95V or 0.54V
DDQ
, whichever is smaller.
20. The operation current is calculated with 50% read cycle and 50% write cycle.
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