Recommended circuits, Ecommended, Ircuits – Rainbow Electronics DS26504 User Manual
Page 92: Figure 13-4. basic interface, Section (section, Figure 13-4, Should, Need to be 37.5, 8 recommended circuits
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DS26504 T1/E1/J1/64KCC BITS Element
92 of 128
13.8 Recommended Circuits
Figure 13-4. Basic Interface
TTIP
TRING
RTIP
RRING
DV
DD
TV
DD
RV
DD
V
DD
DV
SS
TV
SS
RV
SS
DS26504
R
R
2:1
1:1
C
0.1
mF
0.1
mF
0.1
mF
0.01
mF
TRANSMIT
LINE
RECEIVE
LINE
0.1
mF
10
mF
10
mF
+
+
NOTES:
1) ALL RESISTOR VALUES ARE ±1%.
2) RESISTORS R SHOULD BE SET TO 60
W EACH IF THE INTERNAL RECEIVE-SIDE
TERMINATION FEATURE IS ENABLED. WHEN THIS FEATURE IS DISABLED, R =
37.5
W FOR 75W COAXIAL E1 LINES, 60W FOR 120W TWISTED PAIR E1 LINES, OR
50
W FOR 100W TWISTED PAIR T1 LINES.
3) C = 10µF CERAMIC.
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