MH88524 Datasheet, PDF (1/10 Pages) Mitel Networks Corporation – Dual 2-4 Wire Circuit Preliminary Information

MH88524
®
Dual 2-4 Wire Circuit
Preliminary Information
Features
• Full duplex operation
• Two complete circuits per package
• Transformerless 2-4 Wire (4-2 Wire) conversion
• + 5V operation
• Wide bandwidth (50kHz)
• Small Package Size
Applications
4-2 Wire and 2-4 Wire conversion for:
• MH88630/631, MH88632, MH88500 & MT8840
• PBX
• Key Telephone System
• Channel bank
• Voice Mail
• Terminal Equipment
• Digital Loop Carrier
• Modem
• Intercom
ISSUE 4
April 1995
Ordering Information
MH88524
10 Pin SIL Package
0°C to 70°C
Description
The Mitel MH88524 (Dual 2-4 wire Circuit) provides
two independent interfaces between4-Wire devices
such as the MH88631 COIC (Central Office Interface
CIrcuit) and a speech switch such as the MT8814
(Analog Switch Array), requiring only a single
bidirectional switch per crosspoint. The MH88524
can accommodate two full duplex audio links. The
device is fabricated as a thick film hybrid which
incorporates various technologies for optimum circuit
design and very high reliability.
RX1
TX1
RX2
TX2
Receive Gain
Circuit1
Transmit Gain
Circuit 1
Receive Gain
Circuit 2
Transmit Gain
Circuit 2
2-4 Wire
Circuit 1
2-4 Wire
Circuit 2
VDD VEE AGND
Figure 1 - Functional Block Diagram
JUN1
JUN2
2-73