Brief Description

The FX631 is a low-power, system-selectable Subscriber Pulse Metering (SPM) detector to indicate the presence, on a telephone line, of both 12kHz and 16kHz telephone call-charge frequencies.

Features

Detects 12kHz and 16kHz SPM Frequencies

Low Power (3.0 VoltMIN <1.0mA) Operation

High Speechband Rejection Properties

Tone-Follower and Packet Mode Outputs

Applications

Complex and/or Simple Telephone Systems

Call-Charge/-Logging Systems