ST7SCR
14 ELECTRICAL CHARACTERISTICS
14.1 ABSOLUTE MAXIMUM RATINGS
This product contains devices for protecting the in-
puts against damage due to high static voltages,
however it is advisable to take normal precautions
to avoid appying any voltage higher than the spec-
ified maximum rated voltages.
For proper operation it is recommended that VI
and VO be higher than VSS and lower than VDD.
Reliability is enhanced if unused inputs are con-
nected to an appropriate logic voltage level (VDD
or VSS).
Power Considerations. The average chip-junc-
tion temperature, TJ, in Celsius can be obtained
from:
Where:
TJ = TA + PD x RthJA
TA = Ambient Temperature.
RthJA =Package thermal resistance
(junction-to ambient).
PD = PINT + PPORT.
PINT = IDD x VDD (chip internal power).
PPORT =Port power dissipation
determined by the user)
Stresses above those listed as “absolute maxi-
mum ratings” may cause permanent damage to
the device. This is a stress rating only and func-
tional operation of the device at these conditions is
not implied. Exposure to maximum rating for ex-
tended periods may affect device reliability.
Symbol
VDD - VSS
VIN
VOUT
ESD
ESDCard
IVDD_i
IVSS_i
Ratings
Supply voltage
Input voltage
Output voltage
ESD susceptibility
ESD susceptibility for card pads
Total current into VDD_i (source)
Total current out of VSS_i (sink)
Value
6.0
VSS - 0.3 to VDD + 0.3
VSS - 0.3 to VDD + 0.3
2000
4000
250
250
Unit
V
V
V
V
V
mA
General Warning: Direct connection to VDD or VSS of the I/O pins could damage the device in case of program counter
corruption (due to unwanted change of the I/O configuration). To guarantee safe conditions, this connection has to be
done through a typical 10KΩ pull-up or pull-down resistor.
Thermal Characteristics
Symbol
RthJA
TJmax
TSTG
PD
Ratings
Package thermal resistance
TQFP64
SO24
Max. junction temperature
Storage temperature range
Power dissipation (maximum value)
Value
60
80
150
-65 to +150
500
Unit
°C/W
°C
°C
mW
76/102