HC-5509B Description
The HC-5509B3999-003 telephone Subscriber Line Interface Circuit integrates most of the BORSCHT functions on a monolithic IC. The device is manufactured in a Dielectric Isolation (DI) process and is designed for use as a high voltage interface between the traditional telephone subscriber pair (Tip and Ring) and the low voltage filtering and coding/decoding functions of the line card. Together with a secondary...
HC-5509B Key Features
- DI Monolithic High Voltage Process
- patible with Worldwide PBX and CO Performance Requirements
- Controlled Supply of Battery Feed Current with Programmable Current Limit
- Operates with 5V Positive Supply (VB+)
- Internal Ring Relay Driver and a Utility Relay Driver
- High Impedance Mode for Subscriber Loop
- High Temperature Alarm Output
- Low Power Consumption During Standby Functions
- Switch Hook, Ground Key, and Ring Trip Detection
- Selective Power Denial to Subscriber
HC-5509B Applications
- Solid State Line Interface Circuit for PBX or Central Office Systems, Digital Loop Carrier Systems