Datasheet Summary
Data Sheet July 1998 File Number
5 REN Ringing SLIC for ISDN Modem/TA and WLL
The HC55171 is backward patible to the HC5517 with the added capability of driving 5 REN loads. The HC55171 is ideal for any modem or remote networking access application that requires plain old telephone service POTS, capability. The linear amplifier design allows a choice of Sinusoidal, Square wave or Trapezoidal ringing. The voltage feed architecture eliminates the need for a high current gain node achieving improved system noise immunity, an advantage in highly integrated systems. The device is manufactured in a high voltage Dielectric Isolation (DI) process with an operating voltage range...