COM90C66 Datasheet, PDF (46/76 Pages) SMSC Corporation – ARCNET Controller/Transceiver with AT Interface and On-Chip RAM

OPERATIONAL DESCRIPTION
MAXIMUM GUARANTEED RATINGS*
Operating Temperature Range......................................................................................... 0^oC to +70^oC
Storage Temperature Range....................................................................................... -55^oC to +150^oC
Lead Temperature (soldering, 10 seconds) _{...............................................................................} +325^oC
Positive Voltage on any pin, with respect to ground................................................................VCC+0.3V
Negative Voltage on any pin, with respect to ground _{....................................................................} -0.3V
Maximum VCC_{................................................................................................................................} +7V
*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.
Note: When powering this device from laboratory or system power supplies, it is important that the
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.
DC ELECTRICAL CHARACTERISTICS (TA = 0^oC to 70^oC, VCC = 5.0V ± 5%)
PARAMETER
SYMBOL MIN. TYP. MAX. UNITS
COMMENTS
Low Input Voltage 1
VIL1
(All inputs except
XTAL1, RESET, AEN,
nIOR, nIOW, nMEMR,
nMEMW)
High Input Voltage 1
VIH1
2.0
(All inputs except
XTAL1, RESET, AEN,
nIOR,
nIOW,
nMEMnR,
nMEMW)
0.8
V
TTL Levels
V
TTL Levels
Low Input Voltage 2
(XTAL1)
High Input Voltage 2
(XTAL1)
VIL2
VIH2
4.0
1.0
V
TTL Clock Input
V
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