DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 173

• Manufacturer Part Number: DS21455
• Description: Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
• Manufacturer: Maxim Integrated Products

Specifications of DS21455

• Product: Framer
• Number Of Transceivers: 4
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 328 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

25.8 Recommended Circuits
Figure 25-5. Basic Interface
NOTES:
1) All resistor values are ±1%.
2) Resistors R should be set to 60Ω each if the internal receive-side termination feature is enabled. When
3) C = 1µF ceramic.
this feature is disabled, R = 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
0.1mF
R
173 of 270
C
TTIP
TRING
RTIP
RRING
DS21455/458
DVDD
DVSS
TVDD
TVSS
RVDD
RVSS
0.1mF
0.1mF
0.1mF
0.01mF
10mF
10mF
+
+
V
DD