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參數(shù)資料
| 型號： | 82541ER |
| 廠商： | Intel Corp. |
| 英文描述： | 82541ER Gigabit Ethernet Controller |
| 中文描述： | 82541ER千兆位以太網(wǎng)控制器 |
| 文件頁數(shù)： | 22/48頁 |
| 文件大小： | 284K |
| 代理商： | 82541ER |
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82541ER Gigabit Ethernet Controller
16
Datasheet
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 3.3V > 1.8V
> 1.2V. This is important to avoid stress in the ESD protection circuits. After 3.3V reaches 10% of
its final value, all voltage rails (1.8V and 1.2V) have 150 ms to reach their final operating values.
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.
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
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%
57600
V/s
Operational
Range
Voltage range for normal operating conditions
(PNP’s)
1.674
1.89
V
Operational
Range
Voltage range for normal operating conditions
(PNP’s)
-7
5
%
Operational
Range
Voltage range for normal operating conditions
(external regulator)
1.71
1.89
V
Operational
Range
Voltage range for normal operating conditions
(external regulator)
-5
5
%
Table 2. Recommended Operating Conditions (Sheet 2 of 2)
a
Symbol
Parameter
Min
Max
Unit
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|---|---|
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