Subscriber Line Interface Circuit (SLIC) Preliminary Information
®
MH88510/11
Subscriber Line Interface Circuit (SLIC) Preliminary Information
Features
• • • • • • • • • • • • • • • H...
Description
®
MH88510/11
Subscriber Line Interface Circuit (SLIC) Preliminary Information
Features
High Gain version MH88511 Compatible with popular MH88500 Operates with a wide range of battery voltages Constant current battery feed Dry line compatible Overvoltage and short circuit protection Ringing Feed Off-hook detection and LED indicator drive Dial pulse detection Ring trip filter with auto ring trip Relay driver Transformerless 2-2 wire conversion Low power consumption Mute of incoming audio Few external components
ISSUE 1
April 1995
Ordering Information MH88510 MH88511 20 Pin SIL Package 20 Pin SIL Package 0° C to 70° C
Description
The Mitel MH88510/11 Subscriber Line Interface Circuit provides a complete interface between the telephone line and a speech switch requiring only single bidirectional switch per crosspoint. The functions provided by the MH88510/11 include bidirectional differential to single ended conversion in the speech path, line battery feed, ringing feed and loop and dial pulse detection. The device is fabricated as a thick film hybrid which incorporates various technologies for optimum circuit board and very high reliability.
Applications
Line Interface for: PABX Intercoms Key Systems
TF TIP
Tip Drive 2-2 Wire Hybrid Current & Voltage Sensing
Constant Current/Voltage Control MUTE JUNC
Ring Trip Filter
RING RF
Ring Short Protection
Line Supervision
Relay Driver
VBAT AGND VDD VEE
SHK
LED
RRC
RRD VRLY RGND
F...
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