COM20020_00 Datasheet, PDF (59/82 Pages) SMSC Corporation – Universal Local Area Network Controller with 2K x 8 On-Board RAM

OPERATIONAL DESCRIPTION
MAXIMUM GUARANTEED RATINGS*
Operating Temperature Range................................................................................................. -40^oC to +85^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 ........................................................................ V_DD+0.3V
Negative Voltage on any pin, with respect to ground............................................................................... -0.3V
Maximum V_DD ............................................................................................................................................. +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
V_DD=3.3V±0.3V
T_A=-40^oC to +85^oC
PARAMETER
SYMBOL
MIN TYP MAX UNIT
COMMENT
Low Input Voltage 1
V_IL1
(All inputs except A2,
0.8
V TTL Levels
XTAL1, nRESET, nRD,
nWR, and RXIN)
High Input Voltage 1
(All inputs except A2,
V_IH1
2.0
V TTL Levels
XTAL1, nRESET, nRD,
nWR, and RXIN)
Low Input Voltage 2
V_IL2
(XTAL1)
1.0
V TTL Clock Input
High Input Voltage 2
V_IH2
2.4
V
(XTAL1)
59
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