SLIC 28-Pin QFN Tray

The Le79271 (and higher longitudinal balance Le79271 A) Next Generation Subscriber Line Interface Circuit (SLIC) device in combination with a SLAC device, implement a DSL friendly. high density universal telephone line interface. This enables the design of a low cost. high performance. fully software programmable line interface with worldwide applicability. M AC, DC, and signalling parameters are programmable. Additionally. the NGCC has integrated self-test and line-test capabilities to resolve faults to the line or line circuit.

• Designed to minimize POTS transients, optimizing CRC performance for triple play applications
• Best-in-class GR-844 equivalent testing
  • Fully validated test primitives and host routines
  • Guaranteed performance parameters
• Optimized for best-in-class density
• Monitor of two-wire interface voltages and currents supports:
  • Voice transmission
  • Internal ringing generation
  • Programmable DC feed characteristics
  • Current limited and independent of battery
  • Selectable off-hook and ground-key thresholds
  • Subscriber line diagnostics
  • Leakage and loop resistance
  • Line capacitance and bell capacitance
  • Foreign voltage sensing
  • Power cross and fault detection
• Supports 85 Vrms Internal ringing
  • Supports balanced and unbalanced ringing
• 3.3 V and battery supplies
  • Supports two negative and one positive battery
• Dual battery operation for system power saving
  • Automatic battery switching
  • Intelligent thermal management
• Compatible with inexpensive protection networks
• Metering capable
  • 12 kHz and 16 kHz
  • Smooth polarity reversal
• Tip-open mode supports ground start signalling
• Integrated test load switch
• 5 REN with DC offset