OPERATIONAL DESCRIPTION
*
MAXIMUM GUARANTEED RATINGS
Operating Temperature Range
0oC to +70oC
........................................................................................
Storage Temperature Range
-55oC to +150oC
......................................................................................
Lead Temperature (soldering, 10 seconds)
+325 oC
..............................................................................
Positive Voltage on any pin, with respect to ground
Negative Voltage on any pin, with respect to ground
VDD+0.3V
...............................................................
....................................................................
-0.3V
+7V
Maximum VDD
...............................................................................................................................
*Stresses above those listed may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other condition above those indicated in the
operational sections of this specification is not implied.
When powering this device from laboratory or system power supplies, it is important that the
NOTE:
Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit
voltage spikes or "glitches" on their outputs when the AC power is switched on or off. In addition,
voltage transients on the AC power line may appear on the DC output. If this possibility exists it is
suggested that a clamp circuit be used.
VDD=5.0V 10%
DC ELECTRICAL CHARACTERISTICS
±
COM20020-5I: TA=-40oC to +85oC
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
COMMENT
TTL Levels
Low Input Voltage 1
(All inputs except A2,
XTAL1, nRESET, nRD,
nWR, and RXIN)
VIL1
0.8
V
High Input Voltage 1
(All inputs except A2,
XTAL1, nRESET, nRD,
nWR, and RXIN)
VIH1
2.0
V
TTL Levels
Low Input Voltage 2
(XTAL1)
High Input Voltage 2
(XTAL1)
VIL2
VIH2
1.0
V
V
TTL Clock Input
4.0
Low to High Threshold
Input Voltage (A2,
nRESET, nRD, nWR,
RXIN)
VILH
1.8
1.2
V
V
Schmitt Trigger,
All Values at VDD
5V
=
VIHL
High to Low Threshold
Input Voltage (A2,
nRESET, nRD, nWR,
RXIN)
41
SMSC [ SMSC CORPORATION ]
