Features

• Low Cost Version of the HC-5504B

• Capable of 5V or 12V (VB+) Operation

• Monolithic Integrated Device

• DI High Voltage Process

• Compatible With Worldwide PBX Performance

Requirements

• Controlled Supply of Battery Feed Current for Short Loops

(41mA)

• Internal Ring Relay Driver

• Allows Interfacing With Negative Superimposed Ringing

Systems

• Low Power Consumption During Standby

• Switch Hook Ground Key and Ring Trip Detection

Functions

• Selective Denial of Power to Subscriber Loops