Description
The PBL 3762 Subscriber Line Interface Circuit (SLIC) is a bipolar integrated circuit in 75 V technology which replaces the conventional transformer based analog line interface circuit in PABX and other telecommunications equipment with a modern, compact solid state design. Not only is required PCB area reduced, but lesser component weight and height result as well. The PBL 3762 has been optimized for low cost and to require only a minimum of external components.

KEY FEATUREs
• Battery feed characteristics programmable via external resistors; feed characteristics independent of SLIC battery supply variations
• Battery supply voltage as low as 24 V for power efficient line card designs
• Ring relay driver
• Loop current, ground key and ring trip detection functions
• Programmable loop current detector threshold
• Hybrid function with all types of CODEC/filter devices
• Programmable line terminating impedance, complex or real
• On-hook transmission
• Longitudinal balance specifications in excess of FCC and EIA requirements
• Low 21 mW on-hook power dissipation
• Tip-ring open circuit state
• -40°C to +85°C ambient temperature range