Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The Intersil HC5503C is a low cost Subscriber Line Interface Circuit (SLIC), that replaces the components of an unbalanced discrete Analog circuit design. The monolithic integrated design provides improved performance and system reliability.
The SLIC provides: current limited DC feed to the subscriber loop, maintains a flat frequency response over the voice band and beyond, has self resetting thermal protection that allows conversation to continue while the fault is present, provides a TTL subscriber off-hook indication even in the presence of longitudinal currents, provides unbalanced 2-wire transmission while maintaining an excellent longitudinal balance and limits system power consumption on short loops.
The HC5503C provides on-hook transmission and longitudinal current rejection in both the on-hook or off-hook conditions. The SLIC needs only one +5V supply in addition to the main battery supply (-24V to -58V) for loop current.
Available in 22PDIP and 24SO packaging. The HC5503C is ideally suited as a replacement for discrete line circuits in low cost analog PABX's, Small Office/Home Office products or Small Key Systems.
• Monolithic Integrated Device • Single +5V Supply • Controlled Supply of Battery Feed Current for Short Loops (30mA) • Allows Interfacing With All Ringing Systems • Switch Hook Detection • Low Power Consumption During Standby
HC5503C Typical Application
• PBX Switches (Analog, Digital or ISDN) • Key Telephone Systems (KTS) • ISDN PC Plug in Modems • ISDN Small Office / Home Office (SOHO) Terminal Adapters (TA) • CTI (Computer Telephony Integration) Products