DS2156L+ Maxim Integrated Products, DS2156L+ Datasheet - Page 161

• Manufacturer Part Number: DS2156L+
• Description: IC TXRX T1/E1/J1 1-CHIP 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS2156L+

• Function: Single-Chip Transceiver
• Interface: E1, J1, T1, TDM, UTOPIA II
• Number Of Circuits: 1
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Includes: BERT Generator and Detector, CMI Coder and Decoder, HDLC Controller
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -

23.8 Recommended Circuits
Figure 23-3. 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
161 of 265
R
TTIP
TRING
RTIP
RRING
DS2156
DVDD
DVSS
RVDD
TVDD
RVSS
TVSS
0.1µF
0.1µF
0.1µF
0.01µF
10µF
10µF
+
+
VDD