5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
8.0 OPERATIONAL DESCRIPTION
8.1 Maximum Guaranteed Ratings*
Operating Temperature Range........................................................................................................................-40oC to +85oC
Storage Temperature Range.........................................................................................................................-55oC to +150oC
Lead Temperature (soldering, 10 seconds) ................................................................................................................+325oC
Positive Voltage on any pin, with respect to ground ...............................................................................................VDD+0.3V
Negative Voltage on any pin, with respect to ground......................................................................................................-0.3V
Maximum VDD ....................................................................................................................................................................+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.
8.2 Dc Electrical Characteristics
VDD=3.3V±5%
TA=-40oC to +85oC
PARAMETER
Low Input Voltage 1
(All inputs except A2,
XTAL1, nRESET, nRD,
nWR, and RXIN)
High Input Voltage 1
(All inputs except A2,
XTAL1, nRESET, nRD,
nWR, and RXIN)
Low Input Voltage 2
(XTAL1)
SYMBOL
MIN
TYP
MAX
UNIT
COMMENT
VIL1
0.6
V
VIH1
2.0
V
VIL2
VIH2
VILH
1.0
V
V
V
TTL Clock Input
Schmitt Trigger,
High Input Voltage 2
(XTAL1)
2.4
Low to High Threshold
Input Voltage
1.8
1.2
All Values at VDD
3.3V
=
(A2, nRESET, nRD, nWR,
and RXIN)
High to Low Threshold
Input Voltage
VIHL
V
V
(A2, nRESET, nRD, nWR,
and RXIN)
Low Output Voltage 1
(nPULSE1 in Push/Pull
Mode, nPULSE2,
NTXEN)
VOL1
0.4
I
SINK=2mA
High Output Voltage 1
(nPULSE1 in Push/Pull
Mode, nPULSE2,
nTXEN)
VOH1
2.4
V
ISOURCE=-1mA
SMSC COM20020I 3.3V
Page 45
Revision 12-06-06
DATASHEET
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