DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 160
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DS21Q55
Manufacturer Part Number
DS21Q55
Description
IC TXRX QUAD T1/E1/J1 SCT 256BGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21Q55.pdf
(237 pages)
Specifications of DS21Q55
Function
Transceiver
Interface
E1, J1, T1
Number Of Circuits
4
Voltage - Supply
3.14 V ~ 3.47 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
256-BGA
Includes
BERT Generator and Detector, Dual HDLC Controllers
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power (watts)
-
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Manufacturer:
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22.8 Recommended Circuits
Figure 22-3. Basic Interface
Note 1: All resistor values are ±1%.
Note 2: Resistors R should be set to 60Ω each if the internal receive-side termination feature is enabled. When this feature is disabled, R =
Note 3: C = 1µF ceramic.
37.5Ω for 75Ω coaxial E1 lines, 60Ω for 120Ω twisted-pair E1 lines, or 50Ω for 100Ω twisted-pair T1 lines.
TRANSMIT
LINE
RECEIVE
LINE
2:1
1:1
R
C
0.1µF
160 of 237
R
TTIP
TRING
RTIP
RRING
DS21Q55
DVDD
DVSS
RVDD
TVDD
RVSS
TVSS
0.1µF
0.1µF
0.1µF
0.01µF
10µF
10µF
+
+
VDD