82595TX Datasheet, PDF (38/59 Pages) Intel Corporation – ISA/PCMCIA HIGH INTEGRATION ETHERNET CONTROLLER

82595TX
11 1 1 PACKAGE THERMAL SPECIFICATIONS
The 82595TX is specified for operation when case
temperature is within the range of 0 C to 85 C The
case temperature may be measured in any environ-
ment to determine whether the 82595TX is within
the specified operating range The case temperature
should be measured at the center of the top surface
opposite the pins
The ambient temperature is guaranteed as long as
T_C is not violated The ambient temperature can be
calculated from the i_JA and the i_JC from the follow-
ing equations
T_J e T_C a P i_JC
T_A e T_J b P i_JA
T_C e T_A a P i_JA b i_JC
i_JA and i_JC values for the 144 tQFP package are as
follows
Thermal Resistance ( C Watt)
i_JC
i_JA ^b VS ^b Airflow ft min (m Sec)
0 (0)
200 (1 01)
17
48
38
11 2 A C Timing Characteristics
281630 – 11
Figure 11-1 Voltage Levels for Differential Input
Timing Measurements (RCV and CLSN Pairs)
281630 – 13
Figure 11-3 Voltage Levels for TRMT
Pair Output Timing Measurements
281630 – 14
Figure 11-4 Voltage Levels for Differential Input
Timing Measurements (RD Pair)
11 3 A C Measurement Conditions
1 T_C ^e 0 C to ^a85 C V_CC ^e 5V g5%
2 The signal levels are referred to in Figures 1 2 3
and 4
3 A C Loads
a) AUI Differential a 10 pF total capacitance
from each terminal to ground and a load resis-
tor of 78X g1% in parallel with a 27 mH
g5% inductor between terminals
b) TPE 20 pF total capacitance to ground
281630 – 12
Figure 11-2 Voltage Levels for
TDH TDL TDH and TDL
281630 – 15
Figure 11-5 X1 Input Voltage Levels
for Timing Measurements
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