DS2149 MAXIM [Maxim Integrated Products], DS2149 Datasheet - Page 25

• Manufacturer Part Number: DS2149
• Description: 5V T1/J1 Line Interface Unit
• Manufacturer: MAXIM [Maxim Integrated Products]

Figure 11-1. Basic Network Interface
Note 1: All resistor values are ±1%.
Note 2: The R r resistors should be 50Ω each for T1 lines.
Note 3: C = 1mF if using a 1:2 transformer; C = 2mF if using a 1:3 transformer.
TRANSMIT
RECEIVE
LINE
LINE
toward the network)
(larger winding
N:1
1:1
0.1µF
R
r
R
R
t
t
R
r
C
25 of 32
TTIP
TRING
RTIP
RRING
DS2149
V
V
V
V
MCLK
DD
SS
DD
SS
(22)
(21)
(14)
(15)
0.01µF
0.1µF
0.1µF
1.544MHz
10µF
10µF
+V
DD