XEV90
Description
Xe’s XEV90 is a plete DAA integrated into a pact PLCC package.
Key Features
- FCC Part 68 Rules require a 1500 volt isolation barrier between the telephone line and all other circuits
- This isolation must be preserved throughout the system
- Xe remends 0.100 inch spacing between traces connected to Ring and all other conductors to preserve this isolation
- Tip is one wire of the two-wire telephone line connection (RJ11 Pin 3)
- The telephone pany places a DC "Battery" voltage across Tip and Ring on all public switched telephone lines
- The XEV90 accepts this line battery voltage without regard to its polarity
- No Connection L1 and L2 provide the connective points for a billing tone filter when required
- No Connection DC1 and DC2 control performance of the line current holding circuit
- A jumper from DC1 to DC2 limits DC loop current to 60 milliamps
- An open circuit between DC1 and DC2 permits loop currents up to 100 milliamps as required for North America
