GD82541PI Datasheet, PDF (20/46 Pages) Intel Corporation – 82541 Family of Gigabit Ethernet Controllers

82541(PI/GI/EI) — Networking Silicon
Table 2. Recommended Operating Conditions (Sheet 2 of 2)^a
Symbol
Parameter
Min
Max
Unit
tr/tf
input rise/fall time (Schmitt input)
0
10
ms
T_A
Operating temperature range
(ambient)
0
70
°C
T_J
Junction temperature
≤125
°C
a. Sustained operation of the device at conditions exceeding these values, even if they are within the absolute maximum rating
limits, might result in permanent damage.
b. The value listed in this table is for external voltage regulation. If the internal voltage regulator is used, the minimum value is
1.67 V.
c. The value listed in this table is for external voltage regulation. If the internal voltage regulator is used, the maximum value is
1.926 V.
d. The value listed in this table is for external voltage regulation. If the internal voltage regulator is used, the minimum value is
1.12 V.
e. The value listed in this table is for external voltage regulation. If the internal voltage regulator is used, the maximum value is
1.284 V.
4.2.2
Voltage Ramp and Sequencing Recommendations
Note: In any case or time period (greater than 1 ns), the supply voltage should comply with 3.3 V > 1.8 V
> 1.2V. This is important to avoid stress in the ESD protection circuits. After 3.3 V reaches 10% of
its final value, all voltage rails (1.8 V and 1.2 V) have 150 ms to reach their final operating values.
Table 3. 3.3V Supply Voltage Ramp
Parameter
Description
Min
Max
Unit
Rise Time
Time from 10% to 90% mark
0.1
100
ms
Monotonicity Voltage dip allowed in ramp
0
mV
Slope
Ramp rate at any time between 10% to 90%
28800
V/s
Operational
Range
Voltage range for normal operating conditions
3
3.6
V
Ripple
Maximum voltage ripple at a bandwidth equal
to 50 MHz
70
mV
Overshoot
Maximum voltage allowed
4
V
Table 4. 1.8V Supply Voltage Ramp
Symbol
Parameter
Min
Rise Time
Time from 10% to 90% mark
0.1
Monotonicity Voltage dip allowed in ramp
Slope
Ramp rate at any time between 10% to 90%
Operational
Range
Voltage range for normal operating conditions
1.71
Ripple
Maximum voltage ripple at frequency below
1 MHz
Ripple
Minimum voltage ripple at frequency below
1 MHz
1.55
Overshoot
Maximum voltage allowed
Max
100
0
57600
1.89
280
2.2
Unit
ms
mV
V/s
V
mV_pk-to-pk
V
V
20