MT9042CPR Zarlink Semiconductor, Inc., MT9042CPR Datasheet - Page 20

• Manufacturer Part Number: MT9042CPR
• Description: Dual Reference Frequency Selectable Digital PLL with Multiple Clock Outputs for T1/E1 (ITU-T G.812 type IV) and Stratum (3, 4, 4E) Applications
• Manufacturer: Zarlink Semiconductor, Inc.

† See "Notes" following AC Electrical Characteristics tables.
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels* -
with respect to ground (VSS) unless otherwise stated.
* 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.
AC Electrical Characteristics - Performance
10
11
12
13
14
15
16
17
18
19
1
2
3
1
2
3
4
5
6
7
8
9
ALL SIGNALS
Threshold Voltage
Rise and Fall Threshold Voltage High
Rise and Fall Threshold Voltage Low
Freerun Mode accuracy with OSCi at:
Holdover Mode accuracy with OSCi at:
Capture range with OSCi at:
Phase lock time
Output phase continuity with:
MTIE (maximum time interval error)
Output phase slope
Reference input for Auto-Holdover with:
Characteristics
t
IRF,
Characteristics
t
Figure 18 - Timing Parameter Measurement Voltage Levels
ORF
mode switch to Holdover
mode switch to Freerun
mode switch to Normal
reference switch
1.544MHz
2.048MHz
Timing Reference Points
±100ppm
±100ppm
±100ppm
±32ppm
±32ppm
±32ppm
±0ppm
±0ppm
±0ppm
8kHz
Sym
V
V
V
HM
LM
Sym
T
Schmitt
-0.05
-0.05
-0.05
-100
-230
-198
-130
-36k
-36k
-18k
Min
-32
-0
1.5
2.3
0.8
+0.05
+0.05
+0.05
+100
+230
+198
+130
+18k
+36k
+36k
Max
+32
200
200
200
600
+0
30
50
45
t
IRF,
TTL
1.5
2.0
0.8
Units
t
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
us/s
ORF
ns
ns
ns
ns
ns
s
5-8
5-8
5-8
1,2,4,6-8,40
1,2,4,6-8,40
1,2,4,6-8,40
1-3,6-8
1-3,6-8
1-3,6-8
1-3,6-14
1-3,6-14
1-2,4-14
1-,4,6-14
1-3,6-14
1-14,27
1-14,27
1-3,6,9-11
1-3,7,9-11
1-3,8-11
Conditions/Notes†
0.5V
0.7V
0.3V
CMOS
MT9042C
DD
DD
DD
Voltages are
V
V
V
Units
HM
LM
T
V
V
V
20