Description
The PBL 386 61/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated circuit for use in Central Office, MUX and other telecommunications equipment. The PBL 386 61/2 has been optimized for low total line interface cost and a high degree of flexibility in different applications.

Key Features
• Selectable overhead voltage principle
    – All adaptive: The overhead voltage follows 0.6 V Peak < signals < 6.2 VPeak.
    – Semi adaptive: The overhead voltage follows 3.1 V Peak < signals < 6.2 VPeak.
• Metering 2.2 Vrms.
• High and low battery with automatic switching
• Battery supply as low as -10 V
• Only +5 V in addition to GND and battery (VEE optional)
• 39 mW on-hook power dissipation in active state
• Long loop battery feed tracks VBat for maximum line voltage
• 44 V open loop voltage @ -48 V battery feed
• Constant loop voltage for line leakage <5 mA
• On-hook transmission
• Full longitudinal current capability during on-hook
• Programmable loop & ring-trip detector threshold
• Analog temperature guard