參數(shù)資料
型號(hào)： MT9045
廠商： Zarlink Semiconductor Inc.
英文描述： T1/E1/OC3 System Synchronizer
中文描述： T1/E1/OC3系統(tǒng)同步
文件頁數(shù)： 22/34頁
文件大?。?/td> 495K
代理商： MT9045
MT9045
Data Sheet
22
Zarlink Semiconductor Inc.
See "Notes" following AC Electrical Characteristics tables.
* Supply voltage and operating temperature are as per Recommended Operating Conditions.
* Timing for input and output signals is based on the worst case result of the CMOS thresholds.
* See Figure 12.
AC Electrical Characteristics - Performance
Characteristics
Sym
Min
Max
Units
Conditions/
Notes
1
Freerun Mode accuracy with OSCi at:
±
0ppm
-0
+0
ppm
5-9
2
±
32ppm
-32
+32
ppm
5-9
3
±
100ppm
-100
+100
ppm
5-9
4
Holdover Mode accuracy with OSCi at:
±
0ppm
-0.05
+0.05
ppm
1,2,4,6-9,41
5
±
32ppm
-0.05
+0.05
ppm
1,2,4,6-9,41
6
±
100ppm
-0.05
+0.05
ppm
1,2,4,6-9,41
7
Capture range with OSCi at:
±
0ppm
-230
+230
ppm
1-3,6-9
8
±
32ppm
-198
+198
ppm
1-3,6-9
9
±
100ppm
-130
+130
ppm
1-3,6-9
10
Phase lock time
30
s
1-3,6-15
11
Output phase continuity with: reference switch
200
ns
1-3,6-15
12
mode switch to Normal
200
ns
1-2,4-15
13
mode switch to Freerun
200
ns
1-,4,6-15
14
mode switch to Holdover
50
ns
1-3,6-15
15
MTIE (maximum time interval error)
600
ns
1-15,28
16
Output phase slope
45
us/s
1-15,28
17
Reference input for Auto-Holdover with: 8kHz,
19.44MHz
-30k
+30k
ppm
1-3,6,9,10-12
18
1.544MHz
-30k
+30k
ppm
1-3,7,10-12
19
2.048MHz
-30k
+30k
ppm
1-3,8,10-12
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels* -
Voltages are
with respect to ground (V
SS
) unless otherwise stated
Characteristics
Sym
CMOS
Units
1
Threshold Voltage
V
T
V
HM
V
LM
0.5V
DD
0.7V
DD
0.3V
DD
V
2
Rise and Fall Threshold Voltage High
V
3
Rise and Fall Threshold Voltage Low
V
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