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參數(shù)資料
| 型號(hào)： | LXT980QC |
| 英文描述： | LAN HUB CONTROLLER |
| 中文描述： | 局域網(wǎng)集線器控制器 |
| 文件頁(yè)數(shù)： | 59/96頁(yè) |
| 文件大?。?/td> | 1309K |
| 代理商： | LXT980QC |
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LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
Datasheet
59
4.0
Test Specifications
Table 24
through
Table 48
and
Figure 26 through Figure 41
represent the performance
specifications of the LXT980/980A. These specifications are guaranteed by test except where
noted
“
by design.
”
Minimum and maximum values listed in
Table 26
through
Table 48
apply over
the recommended operating conditions specified in
Table 25
.
Table 24. Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Units
Supply voltage
V
CC
-0.3
6
V
Operating temperature
Ambient
T
OPA
-15
+80
o
C
Case
T
OPC
–
+130
o
C
Storage temperature
T
ST
-65
+150
o
C
Caution:
Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Exposure to maximum rating conditions for extended periods may affect device reliability.
Table 25. Operating Conditions
Parameter
Sym
Min
Typ
1
Max
Units
Recommended supply voltage
V
CC
4.75
5.0
5.25
V
V
CCV
4.75
5.0
5.25
V
V
CCR
4.75
5.0
5.25
V
V
CCT
4.75
5.0
5.25
V
Recommended operating temperature
Ambient
T
OPA
0
–
70
°
C
Case
T
OPC
0
–
115
°
C
Power consumption
Auto-Negotiation
P
C
–
–
3.5
W
100BASE-TX, 4 ports active
P
C
–
–
3.5
W
10BASE-T, 4 ports active
P
C
–
–
3.4
W
100BASE-FX, 4 ports active
P
C
–
–
3.0
W
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
Table 26. Input Clock Requirements
Parameter
1
Symbol
Min
Typ
2
Max
Units
Test Conditions
Frequency
–
–
25
–
MHz
–
Frequency Tolerance
–
–
–
±100
PPM
–
Duty Cycle
–
40
–
60
%
–
1. These requirements apply to the external clock supplied to the LXT980, not to LXT980 test specifications.
2. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
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