MT9074_05 Datasheet, PDF (22/151 Pages) Zarlink Semiconductor Inc – T1/E1/J1 Single Chip Transceiver

Percentage of
Nominal Peak
Voltage
120
110
100
90
80
50
MT9074
269 nS
244 nS
194 nS
Data Sheet
20
0
-10
Nominal Pulse
-20
219 nS
488 nS
Figure 8 - Pulse Template (G.703)(E1)
20 Mhz Clock
The MT9074 requires a 20 Mhz clock. This may provided by a 50 ppm oscillator as per Figure 9.
+5 V
OSC1
20 MHz
OUT
Vdd
GND
.1µF
OSC2
(open)
Figure 9 - Clock Oscillator Circuit
22
Zarlink Semiconductor Inc.