HC4P5504B1-5

HC-5504B1 Data Sheet February 1999 File Number 4125.3 ITU Low Cost, PABX SLIC With 40mA Loop Feed The Intersil SLIC incorporates many of the BORSHT functions on a single IC chip. This includes DC battery feed, a ring relay driver, supervisory and hybrid functions. This device is designed to maintain transmission performance in the presence of externally induced longitudinal currents. Using the unique Intersil dielectric isolation process, the SLIC can operate directly with a wide range of station battery voltages. The SLIC also provides selective denial of power. If the PBX system becomes overloaded during an emergency, the SLIC will provide system protection by denying power to selected subscriber loops. The Intersil SLIC is ideally suited for the design of new digital PBX systems by eliminating bulky hybrid transformers. 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 Ordering Information PART NUMBER HC4P5504B1-5 TEMP. RANGE (oC) 0 to 75 PACKAGE 28 Ld PLCC PKG. NO. N28.45 Applications Solid State Line Interface Circuit fo...