IDT82P2821BHG IDT, Integrated Device Technology Inc, IDT82P2821BHG Datasheet - Page 40
IDT82P2821BHG
Manufacturer Part Number
IDT82P2821BHG
Description
IC LINE INTERFACE UNIT 640-PBGA
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.IDT82P2821BHG.pdf
(151 pages)
Specifications of IDT82P2821BHG
Function
Line Interface Unit (LIU)
Interface
E1, J1, T1
Number Of Circuits
1
Voltage - Supply
1.8V, 3.3V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
*
Includes
Defect and Alarm Detection, Driver Over-Current Detection and Protection, LLOS Detection, PRBSARB / IB Detection and Generation
Number Of Transceivers
1
Screening Level
Industrial
Mounting
Surface Mount
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Power (watts)
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
800-1703
82P2821BHG
82P2821BHG
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
IDT82P2821BHG
Manufacturer:
IDT
Quantity:
170
Company:
Part Number:
IDT82P2821BHG
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
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Figure-20 Transmit Differential Line Interface with Co-
Functional Description
IDT82P2821
Twisted Pair Cable (transformer-less, non standard
Figure-19 Transmit Differential Line Interface with
Figure-21 Transmit Differential Line Interface with
Twisted Pair Cable (with Transformer)
axial Cable (with transformer)
Note:
In this mode, port protection
should be enhanced.
IM
IM
TTIPn
TRINGn
compliant)
TTIPn
TRINGn
IM
Rt
Rt
TTIPn
TRINGn
Rt
Rt
3.0Vpp
1:2
1:2
4.74 Vpp
6.0 Vpp
21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
40
3.3.6.2 Transmit Single Ended Mode
applications.
supported. Internal Impedance Matching circuit uses an internal
programmable resistor (IM) only. The T_TERM[2:0] bits (b2~0, TCF0,...)
should be set to ‘011’. The output amplitude is 4.74 Vpp when PULS[3:0]
is ‘0001’ and the SCAL[5:0] bits (b5~0, SCAL,...) is ‘100001’.
and overall setup. Refer to separate application note for details.
Figure-22 Transmit Single Ended Line Interface with
Transmit Single Ended mode can only be used in 75 Ω coaxial cable
In Transmit Single Ended mode, only Internal Impedance Matching is
In Single Ended mode, special care has to be taken for termination
A 1:2 (step up) transformer should be used in application.
Figure-22 shows the connection for one channel.
1. The waveform in this mode is not standard. However, if the arbitrary wave-
form generator is used, the waveform could pass the template marginally.
Coaxial Cable (with transformer)
IM
TTIPn
TRINGn
4.7 µF
1:2
February 6, 2009
4.74 Vpp
1
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