Description
The PBL 3766 Subscriber Line Interface Circuit (SLIC) is a monolithic integrated circuit, manufactured in 75 V bipolar technology. The PBL 3766 SLIC facilitates the design of cost effective, high performance on-premises (ONS) analog line interface cards for PABX systems and terminal adapters. Small package size and few required external components result in a miniaturized design.

Key Features
• Low cost
• Few external components
• Programmable, constant current loop feed
• Line feed characteristics independent of battery supply variations
• -24 V to -58 V battery supply voltage range
• Detectors
    – programmable loop current detector
    – ring trip detector
• Ring relay driver
• Hybrid function with conventional or programmable CODEC/filters
• Line terminating impedance, complex or real, set by a simple external network or controlled by a programmable CODEC/filter
• Idle noise typ. -83 dBmp, typ. 7 dBrnC
• Low on-hook power dissipation: 20 mW @ -28 V, 35 mW @ -48 V
• Tip-ring open circuit state for subscriber loop power denial
• On-hook transmission