si5321 Silicon Laboratories, si5321 Datasheet - Page 5

• Manufacturer Part Number: si5321
• Description: Sonet/sdh Precision Clock Multiplier Ic
• Manufacturer: Silicon Laboratories

( C L K I N + ) - ( C L K I N - )
Figure 3. Transitionless Period on CLKIN for Detecting a LOS Condition
N ote: Transm ission line term ination, when required, m ust be provided
(C LKIN+) – (C LKIN –)
C LKIN +
C LKIN –
N ote: W hen using single-ended clock sources, the unused clock
C LKIN +
C LKIN –
input on the Si5321 m ust be ac-coupled to ground.
Figure 1. CLKIN Voltage Characteristics
Figure 2. Rise/Fall Time Measurement
A. O peration with Single-Ended C lock Input*
B. O peration with D ifferential C lock Input
t
F
Rev. 2.4
externally.
t
L O S
t
R
80%
20%
0.5 V
V
V
IS
ID
ID
0 V
Si5321
5