TXC-02050CIPL ETC1 [List of Unclassifed Manufacturers], TXC-02050CIPL Datasheet - Page 21

• Manufacturer Part Number: TXC-02050CIPL
• Description: MRT Device 6-,8-,34-Mbit Line Interface TXC-0250C
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

OVERVIEW
Line Side Input Impedance
The input impedance of the MRT is a function of the state of the LOW lead and the operating rate. The table
below lists the input impedance of the MRT at the operating line rates (which are 1/2 the bit rates).
Line Side Input Sensitivity
The input voltage sensitivity of the MRT depends on the state of the LOW lead as shown in the table below.
Line Side Input Circuit
The circuit shown in Figure 12 illustrates the components required for operating the MRT device at 34368,
8448 or 6312 kbit/s. The 1:1 transformer should have a frequency response of 0.2 MHz < f < 80 MHz with an
insertion loss of 1 dB, maximum (suitable devices include Coilcraft part no. WB-1010 and Pulse Engineering
part no. PE-65966). This gives return loss and isolation voltage values that meet or exceed requirements.
LOW Lead
LOW = 1, line rate = 17184 kHz (E3)
LOW = 0, line rate = 4224 kHz (E2)
LOW = 0, line rate = 3156 kHz (JT2)
Proprietary TranSwitch Corporation Information for use Solely by its Customers
0
1
Receive
Input
Data
Condition
Rate, Mbit/s
6/8 (JT2/E2)
Figure 12. Line Side Input Circuit
34 (E3)
MRT Input Impedance
MRT Input Sensitivity
10/6.3
1 : 1
DATA SHEET
- 21 of 36 -
+
0.1
75
5%
10/6.3
Minimum Input Impedance, | Z |
+
29
30
Input Sensitivity (peak volts)
TXC-02050C
Min
0.5
0.15
0.1
1260 ohms
2390 ohms
3670 ohms
Device
MRT
Max
2.7
1.1
TXC-02050C
TXC-02050C-MB
Ed. 1, May 2002
MRT