Datasheet

CY7C1543V18
CY7C1545V18
Document Number: 001-05389 Rev. *H Page 19 of 26
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
Neutron Soft Error Immunity
Parameter Description
Test
Conditions
Typ Max* Unit
LSBU Logical
Single-Bit
Upsets
25°C 320 368 FIT/
Mb
LMBU Logical
Multi-Bit
Upsets
25°C 0 0.01 FIT/
Mb
SEL Single Event
Latchup
85°C 0 0.1 FIT/
Dev
* No LMBU or SEL events occurred during testing; this column represents a
statistical 
2
, 95% confidence limit calculation. For more details refer to Appli-
cation Note AN 54908 “Accelerated Neutron SER Testing and Calculation of
Terrestrial Failure Rates”
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
I/O 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 A
I
OZ
Output Leakage Current GND  V
I
 V
DDQ,
Output Disabled 2 2 A
V
REF
Input Reference Voltage
[21]
Typical Value = 0.75V 0.68 0.75 0.95 V
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  RQ  350s.
20. Output are impedance controlled. I
OL
= (V
DDQ
/2)/(RQ/5) for values of 175  RQ  350s.
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.
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