UPC7073 Datasheet, PDF (1/20 Pages) NEC – UPC7073 ANALOG SUBSCRIBER LINE LSI BS-SLIC

DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC7073
µPC7073 ANALOG SUBSCRIBER LINE LSI (BS-SLIC)
The µPC7073 is a BS-SLIC that can be used in analog subscriber circuits such as private branch exchangers
(PBXs) and switching equipment for central offices. It features two of the functions required for analog subscriber
circuits: subscriber line feed control and subscriber line supervision.
Use of the µPC7073 in combination with a digital CODEC (µPD9903) can reduce the number of components
required in analog subscriber circuits.
FEATURES
• Single-chip, monolithic LSI (bipolar)
• Constant-resistance feed or semi constant-current feed ^Note
• 200-Ω feed, 400-Ω feed, or Tip-to-Ring pin feedout status (HIGH and WET)
• On-chip metering signal superposing circuit
• On-hook sending and receiving
• Loop detection ^Note
• Ground detection and ground-fault/power contact protection ^Note
• Three on-chip relay drivers (flyback prevention diode must be externally provided)
• Two power supply voltages (–48 V and +5 V)
• Low power consumption: 110 mW (TYP., when on hook)
Note Requires µPD9903.
ORDERING INFORMATION
Part Number
µPC7073GT
Package
48-pin plastic shrink SOP (375 mil)
The information in this document is subject to change without notice.
Document No. S10896EJ2V0DS00 (2nd edition)
(Previous No. ID-3576)
Date Published June 1996 P
Printed in Japan
©
1996