ds2156gn Maxim Integrated Products, Inc., ds2156gn Datasheet - Page 162

• Manufacturer Part Number: ds2156gn
• Description: Ds2156, Ds2156l, Ds2156ln T1/e1/j1 Single-chip Transceiver Tdm/utopia Ii Interface
• Manufacturer: Maxim Integrated Products, Inc.

Note 1: All resistor values are ±1%.
Note 2: X1 and X2 are very low DCR transformers.
Note 3: C1 = 1µF ceramic.
Note 4: S1 and S2 are 6V transient suppressers.
Note 5: D1–D8 are Schottky diodes.
Note 6: The optional fuses, F1–F4, prevent AC power line crosses from compromising the transformers.
Note 7: The 68µF is used to keep the local power-plane potential within tolerance during a surge.
Figure 23-4. Protected Interface Using Internal Receive Termination
TRANSMIT
LINE
RECEIVE
LINE
F3
F4
F1
F2
2:1
1:1
X2
X1
60
S2
S1
C1
0.1µF
0.1µF
0.1µF
60
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D7
D3
D5
D1 D2
VDD
VDD
D6
D8
D4
TTIP
TRING
RTIP
RRING
DS2156
DVDD
DVSS
TVDD
TVSS
RVDD
RVSS
0.1µF
0.1µF
0.1µF
0.01µF
10µF
10µF
+
+
VDD
68µF
+