MH89793 Datasheet, PDF (1/8 Pages) Mitel Networks Corporation – E1 Transceiver with Selectable Impedance Preliminary Information

MH89793
®
E1 Transceiver with Selectable Impedance
Preliminary Information
Features
• 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 (LOS) indication
• Single +5V operation
• Compatible with MT9079 Framer
• Selectable termination impedance
Applications
• Primary rate ISDN network Interface
• Multiplexer equipment
• Private Network links
• Isochronous LANS/WANS
ISSUE 1
April 1995
Ordering Information
MH89793 28 Pin DIL Package
Surface Mount Option is available by adding
the suffix “S”
0°C to +70°C
Description
The Mitel MH89793 is a low cost E1 line
driver/receiver with clock extraction requiring no
external components.
The device is suitable for both 120R and 75R
applications, by linking external pins.
By combining the MH89793 with Mitel’s E1 framer,
the MT9079, a cost effective and efficient interface to
E1 lines can be built.
TxA
TxB
E2o
LOS
RxA
RxB
VDD VSS
Line
Driver
Clock
Recovery
Line
Receiver
TZA1 TZA2 TZA3 TZB1 TZB2 TZC1 TZC2 TZD1 TZD2
Transmit
Isolation
Transformer
TLA
6dB
Pad
TLB
Receive
RLA
Isolation
Transformer
RLB
EQUIPMENT SIDE
LINE SIDE
Figure 1 - Functional Block Diagram
RZA RZB
4-229