MT9042C Data Sheet
25
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 combination of TTL and CMOS thresholds.
* See Figure 18.
AC Electrical Characteristics - Performance
Characteristics Sym. Min. Max. Units Conditions/Notes†
1 Freerun Mode accuracy with OSCi at: ±0ppm -0 +0 ppm 5-8
2 ±32ppm -32 +32 ppm 5-8
3 ±100ppm -100 +100 ppm 5-8
4 Holdover Mode accuracy with OSCi at: ±0ppm -0.05 +0.05 ppm 1,2,4,6-8,40
5 ±32ppm -0.05 +0.05 ppm 1,2,4,6-8,40
6 ±100ppm -0.05 +0.05 ppm 1,2,4,6-8,40
7 Capture range with OSCi at: ±0ppm -230 +230 ppm 1-3,6-8
8 ±32ppm -198 +198 ppm 1-3,6-8
9 ±100ppm -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
(VSS) unless otherwise stated.
Characteristics Sym. Schmitt TTL CMOS Units
1 Threshold Voltage V
T
1.5 1.5 0.5V
DD
V
2 Rise and Fall Threshold Voltage High V
HM
2.3 2.0 0.7V
DD
V
3 Rise and Fall Threshold Voltage Low V
LM
0.8 0.8 0.3V
DD
V
