HC5518X响应SLIC组的实施提示和响应保护电路

Implementing Tip and Ring Protection Circuitry For the HC5518X Ringing SLIC Family
TM
Implementing Tip and Ring Protection Circuitry
For the HC5518X Ringing SLIC Family
Application Note September 1999 AN9842.1
Authors: Richard Whitehead, Dick Tung


Introduction The secondary protection must protect the T and R ports
from the “let through” voltages and currents. Although