XRT83SL28ES Exar, XRT83SL28ES Datasheet - Page 25
XRT83SL28ES
Manufacturer Part Number
XRT83SL28ES
Description
Peripheral Drivers & Components - PCIs 8 CH E1 LIU SH
Manufacturer
Exar
Datasheet
1.XRT83SL28ES.pdf
(47 pages)
Specifications of XRT83SL28ES
Product Category
Peripheral Drivers & Components - PCIs
Rohs
yes
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XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
2.8
Line Termination (TTIP/TRING)
The output stage of the transmit path generates standard bipolar signals to the line for both E1 (75 Ohm)
coaxial cable and E1 (120 Ohm) twisted pair. The XRT83L28 has built-in output impedance matching for both
75 Ohm and 120 Ohm operations. This eliminates the need to change any external components while
switching from 75 Ohm to 120 Ohm operation. The transmitter interface only requires one 0.68
µ
F DC blocking
capacitor with a 1:2 transformer as shown in Figure 17.
F
17. T
C
D
U
I
T
IGURE
YPICAL
ONNECTION
IAGRAM
SING
NTERNAL
ERMINATION
XRT83SL28 LIU
T
1:2
TIP
C=0.68uF
Transmitter
Line Interface E1
Output
T
RING
One Bill of Materials
Internal Impedance
23
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