®
MH89792
E1 Transceiver
Preliminary Information
Features
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•
•
•
•
•
•
•
•
Complete primary rate 2048kb/s CEPT line
driver and receiver
Onboard pulse transformers for transmit and
receive
Meets latest ETSI requirements (ETSI ETS 300
011 (NET 5))
Inductorless clock recovery
Loss of signal indication/ polarity selection
Programmable polarity of extracted clock &
receive data
Single +5V operation
Compatible with all E1 framers
Small footprint area (<330mm
2
)
MH89792-1
MH89792-2
MH89792-3
ISSUE 3
April 1995
Ordering Information
20 Pin SIL Package
20 Pin SIL Package
20 Pin SIL Package
0°C to 70°C
Description
The Mitel MH89792 is a low cost E1 line driver/
receiver with clock extraction requiring no external
components. There are three versions available:
MH89792-1 for 120
Ω
twisted pair cable;
MH89792-2 for 75
Ω
co-axial links;
MH89792-3 for 100
Ω
digital twisted pair.
Applications
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•
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•
Primary rate ISDN network Interface
Multiplexer equipment
Private Network links
Isochronous LANS/WANS
VDD
VSS
TxA
TxB
E2o
LOSP
CLKF/
CLKR
RxINV
RxA
RxB
LOS
RxD
Line
Driver
Transmit
Isolation
Transformer
6dB
Pad
TLA
TLB
Polarity
Selection
Clock/Data
Clock
Recovery
Receive
Isolation
Transformer
Line
Receiver
RLA
RLB
EQUIPMENT SIDE
LINE SIDE
Figure 1 - Functional Block Diagram
4-223
MITEL [ MITEL NETWORKS CORPORATION ]
