參數(shù)資料
型號: VSC7140QJ
廠商: VITESSE SEMICONDUCTOR CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: 1.0625 Gb/s Fibre Channel Dual Repeater / Hub Node
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP52
封裝: 10 X 10 MM, PLASTIC, QFP-52
文件頁數(shù): 5/12頁
文件大小: 115K
代理商: VSC7140QJ
VITESSE
Data Sheet
VSC7140
1.0625 Gb/s Fibre Channel
Dual Repeater / Hub Node
G52180-0, Rev 4.0
10/23/00
Page 5
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano Camarillo, CA 93012
Tel: (800) VITESSE FAX: (805) 987-5896 Email: prodinfo@vitesse.com
Internet: www.vitesse.com
AC Characteristics
Figure 3: AC Timing Diagrams
Table 1: AC Characteristics
(Over recommended operating conditions).
Parameters
Description
Min.
Max.
Units
Conditions
Differential Inputs/Outputs
Latency from Serial Input (RXn/
SIn) to Serial Output (TXn/SOn)
Differential Output Rise/Fall time
Reference Clock Requirements
REFCLK input rise/fall times
T
P
0.25
7.0
ns
T
S
300
ps
Between 20% and 80%
T
T
105
52.5
2.0
108
54
ns
Between V
IL(MAX)
and V
IH(MIN)
106.25 MHz Nom.; REFSEL is HIGH
53.125 MHz Nom.; REFSEL is LOW
Maximum frequency offset between
10 or 20 times REFCLK and the
datarate of the serial input to the CRU.
Measured at 1.5V
From V
IH(MIN)
to V
IH(MIN)
or
V
IL(MAX)
to V
IL(MAX)
F
REFCLK Frequency
MHz
F
O
Frequency Offset
-200
+200
ppm
DC
REFCLK Duty Cycle
35
65
%
T
H
, T
L
REFCLK Input HIGH/LOW time
2.5
ns
T
P
T
P
T
S
RXn,
SIn
SOn,
TXn
REFCLK
T
T
T
T
T
H
T
L
T
V
IH(MIN)
V
IL(MAX)
80%
20%
T
S
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