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SECTION 8
ELECTRICAL CHARACTERISTICS
This section contains detailed information on power considerations, DC/AC electrical
characteristics, and AC timing specifications of the MC68306. Refer to Section 9
Ordering Information and Mechanical Data for specific part numbers corresponding to
voltage, frequency, and temperature ratings.
8.1 MAXIMUM RATINGS
Rating
1, 2
Supply Voltage
1, 2
Input Voltage
Operating Temperature Range
Storage Temperature Range
NOTES:
1.
Permanent damage can occur if maximum ratings are exceeded. Exposure
to voltages or currents in excess of recommended values affects device
reliability. Device modules may not operate normally while being exposed
to electrical extremes.
2.
Although sections of the device contain circuitry to protectagainst damage
from high static voltages or electrical fields, take normal precautions to
avoid exposure to voltages higher than maximum-rated voltages.
The following ratings define a range of conditions in which the device will operate without
being damaged. However, sections of the device may not operate normally while being
exposed to the electrical extremes.
8.2 THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance—Junction to Case
Plastic 132-Pin QFP
Plastic 144-Pin Thin QFP
Thermal Resistance—Junction to Ambient
Plastic 132-Pin QFP
Plastic 144-Pin Thin QFP
* Estimated
MOTOROLA
Symbol
Value
V CC
–0.3 to + 7.0
V in
–0.3 to + 7.0
T A
0 to 70
T stg
–55 to +150
Symbol
Value
JC
20*
20*
JA
42*
42*
MC68306 USER'S MANUAL
This device contains protective
Unit
circuitry against damage due to
V
high static voltages or electrical
fields; however, it is advised that
V
normal precautions be taken to
C
avoid application of any voltages
higher than maximum-rated
C
voltages to this high-impedance
circuit. Reliability of operation is
enhanced if unused inputs are
tied to an appropriate logic
voltage level (e.g., either GND
or V CC ).
Unit
C/W
C/W
8- 1
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