Description
The PBL 38630/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated circuit for use in PBX, Terminal adapters and other telecommunications equipment. The PBL 38630/2 SLIC has been optimized for low total line interface cost and for a high degree of flexibility in different applications.

FEATUREs
• 24-pin SSOP package
• High and low battery with automatic switching
• 65 mW on-hook power dissipation in active state
• On-hook transmission
• Long loop battery feed tracks Vbat for maximum line voltage
• Selectable transmit gain (1x or 0.5 x)
• No power-up sequence
• 43 V open loop voltage @ -48 V battery feed
• Close tolerance current feeding
• Constant loop voltage for line leakage < 5 mA (RLeak ~ > 10 kΩ @ -48 V)
• Full longitudinal current capability during on-hook state
• Longitudinal balance > 60 dB
• Analog overtemperature protection permits transmission while the protection circuits is active
• Integrated Ring Relay driver
• Programmable signal headroom
• -40 °C to +85 °C ambient temperature range

Typical Applications
• Basic functionality Central Office Line card
• Digital Loop Carriers (DLC)