參數(shù)資料
型號(hào)： MT9044AL
廠商： Mitel Networks Corporation
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)： 22/30頁
文件大小： 120K
代理商： MT9044AL
MT9044
Advance Information
22
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 combination of TTL and CMOS thresholds.
* See Figure 18.
Figure 18 - Timing Parameter Measurement Voltage Levels
AC Electrical Characteristics - Performance
Characteristics
Sym
Min
Max
Units
Conditions/Notes
1
Freerun Mode accuracy with OSCi at:
±±
0ppm
±
32ppm
±
100ppm
±
0ppm
±
32ppm
±
100ppm
±
0ppm
±
32ppm
±
100ppm
-0
+0
ppm
5-8
2
-32
+32
ppm
5-8
3
-100
+100
ppm
5-8
4
Holdover Mode accuracy with OSCi at:
-0.05
+0.05
ppm
1,2,4,6-8,40
5
-0.05
+0.05
ppm
1,2,4,6-8,40
6
-0.05
+0.05
ppm
1,2,4,6-8,40
7
Capture range with OSCi at:
-230
+230
ppm
1-3,6-8
8
-198
+198
ppm
1-3,6-8
9
-130
+130
ppm
1-3,6-8
10
Phase lock time
30
s
1-3,6-14
11
Output phase continuity with: reference switch
200
ns
1-3,6-14
12
mode switch to Normal
200
ns
1-2,4-14
13
mode switch to Freerun
200
ns
1-,4,6-14
14
mode switch to Holdover
50
ns
1-3,6-14
15
MTIE (maximum time interval error)
600
ns
1-14,27
16
Output phase slope
45
us/s
1-14,27
17
Reference input for Auto-Holdover with: 8kHz
-18k
+18k
ppm
1-3,6,9-11
18
1.544MHz
-36k
+36k
ppm
1-3,7,9-11
19
2.048MHz
-36k
+36k
ppm
1-3,8-11
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels* -
Voltages are
with respect to ground (V
SS
) unless otherwise stated.
Characteristics
Sym
Schmitt
TTL
CMOS
Units
1
Threshold Voltage
V
T
V
HM
V
LM
1.5
1.5
0.5V
DD
0.7V
DD
0.3V
DD
V
2
Rise and Fall Threshold Voltage High
2.3
2.0
V
3
Rise and Fall Threshold Voltage Low
0.8
0.8
V
t
IRF,
t
ORF
Timing Reference Points
ALL SIGNALS
V
HM
V
T
V
LM
t
IRF,
t
ORF
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