Features
• Wide Operating Battery Range (-21V to -44V)
• Single Additional +5V Supply
• 25mA Short Loop Current Limit
• Ring Relay Driver
• Switch Hook and Ring Trip Detect
• Low On-Hook Power Consumption
• On-Hook Transmission
• ITU-T Longitudinal Balance Performance
• Loop Power Denial Function
• Thermal Protection
• Supports Tip, Ring or Balanced Ringing Schemes
• Low Profile Surface Mount Packaging
• Pin Compatible with Industry Standard HC5504B SLIC
• Pb-free Available
Applications
• Analog Subscriber Line Interfaces in Analog Key Systems
and Digital ISDN PABX Systems
• Related Literature
- AN571, Using Ring Sync with HC-5502A and HC-5504
SLICs