82541ER データシートの表示（PDF） - Intel
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82541ER Datasheet PDF : 46 Pages
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Networking Silicon — 82541(PI/GI/EI)
Table 11. I/O Characteristics (Sheet 2 of 2) (Continued)
Symbol
Parameter
Condition
Min
Typ
Max
Units
IOH
Output high
current:
VOH
Output high
voltage:
3.3 V PCI
0 ≤ (VDD-VOUT) ≤
3.6V
0 ≤ (VDD-VOUT) ≤
1.2V
1.2V ≤ (VDD-VOUT) ≤
1.9V
1.9V ≤ (VDD-VOUT) ≤
3.6V
-32 * (VDD -
VOUT)
-11 * (VDD -
VOUT)-25.2
-1.8 * (VDD -
VOUT)-42.7
IOH = -500 mA
0.9 * VDD (3.3)
-74 * (VDD -
VOUT)
mA
V
VOL
Output low
voltage:
3.3 V PCI
IOL = 1500 mA
V
0.1 * VDD (3.3)
IOZ
Off-state output
leakage current
VO = VDD or VSS
-10
10
µA
IOS
Output short
circuit current
-250
CIN
Input
capacitancec
Input and bi-
directional buffers
8
pF
a. This is only applicable to the 82541PI. The maximum VIL is 0.6 V for the following pins: A13, C5, C8, J4, L7, L13, L12, M8, M12,
M13, N10, N11, N13, N14, P9, and P13.
b. This is only applicable to the 82541PI.
c. VDD (3.3) = 0 V; TA = 25 C; f = 1 Mhz
4.4
AC Characteristics
Table 12. AC Characteristics: 3.3 V Interfacing
Symbol
Parameter
CLK
Clock frequency in PCI mode
Table 13. 25 MHz Clock Input Requirements
Symbol
Parameter
f0
Frequency
df0
Frequency variation
Dc
Duty cycle
tr
Rise time
tf
Fall time
Jptp
Clock jitter (peak-to-peak)a
Min
Typ
Max
Unit
66
MHz
Specifications
Min
Typ
Max
25
-50
+30
40
60
5
5
250
Units
MHz
ppm
%
ns
ns
ps
25
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