LU82551IT INTEL [Intel Corporation], LU82551IT Datasheet - Page 86
LU82551IT
Manufacturer Part Number
LU82551IT
Description
Fast Ethernet PCI Controller
Manufacturer
INTEL [Intel Corporation]
Datasheet
1.LU82551IT.pdf
(102 pages)
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82551IT — Networking Silicon
11.3
80
Table 54. AC Specifications for PCI Signaling
AC Specifications
NOTES:
1. Switching Current High specifications are not relevant to PME#, SERR#, or INTA#, which are open drain
2. Maximum current requirements will be met as drivers pull beyond the first step voltage (AC drive point).
3. Do not test. Guaranteed by design.
I
I
I
I
slew
slew
OH(AC)
OL(AC)
CL
CH
Symbol
outputs.
Equations defining these maximums (A and B) are provided. To facilitate component testing, a maximum
current test point is defined for each side of the output driver.
Equation A.
Equation B.
RP
FP
Switching
Current High
(Test Point)
Switching
Current Low
(Test Point)
Low Clamp
Current
High Clamp
Current
PCI Output Rise
Slew Rate
PCI Output Fall
Slew Rate
Parameter
I
I
OH
OL
= (256/V
= (98/V
CC
0 < V
1.4 < V
0.7V
V
V
2.2 > V
0.18V
V
-3 < V
V
0.4 V to 2.4 V
2.4 V to 0.4 V
CC
OUT
OUT
OUT
CC
)
*
)
(V
*
(V
CC
+ 4 > V
OUT
out
= 0.7V
2.2
CC
= 0.18V
IN
out
OUT
OUT
< V
Condition
-1
- V
)
> V
*
1.4
(V
OUT
CC
< 0.9V
> 0.1V
IN
CC
OUT
CC
CC
)
V
*
(V
< V
- V
> 0
out
CC
CC
CC
out
CC
+ 0.4V
+ 1
), for 0 < V
CC
-25 + (V
25 + (V
), for V
-17.1(V
out
V
< 0.18V
OUT
0.015
CC
IN
IN
Min
-44
CC
95
1
1
/0.023
+ 1)/0.015
- V
> V
- V
CC
CC
out
OUT
-1)/
> 0.7V
)
CC
-32V
38V
Eqn A
Eqn B
Max
4
4
CC
CC
Units
V/ns
V/ns
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Datasheet
Notes
1
1
2
2
1
1
2
2
3
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