DESCRIPTION
The L3037 subscriber line interface circuit is a bipolar device in 70V technology developed for central office / loop carrier and private applications. The L3037 is pin to pin and function compatible with L3035/36. One particular pin (reserved in L3035/36) is now used for reverse polarity transition time programming. The line polarity transition is not affecting the AC signal transmission that can continue also during the line voltage transition.L3037 is available in two different package options: PLCC44 and PQFP44 (10 x 10mm).

■ MONOCHIP SILICON SLIC SUITABLE FOR PUBLIC/PRIVATE APPLICATIONS
■ IMPLEMENTS ALL KEY FEATURES OF THE BORSCHT FUNCTION
■ SOFT BATTERY REVERSAL WITH PROGRAMMABLETRANSITION TIME (3 to 100ms)
■ METERING PULSE INJECTION AND FILTERING WITH MINIMAL COMPONENTS COUNT (NO TRIMMING REQUIRED).
■ PROTECTION RESISTOR MISMATCH COMPENSATION
■ ON HOOK TRANSMISSION
■ LOOP START/GROUND START FEATURE
■ IND TEMP. RANGE: -40°C TO +85°C
■ LOW POWER DISSIPATION IN ALL OPERATING MODES
■ INTEGRATED ZERO CROSSING RELAY DRIVER
■ INTEGRATED (NOISE-LESS) RING TRIP DETECTION
■ VERY LOW NO. of STD TOLERANCE EXTERNAL COMPONENTS
■ SELECT PART FOR U.S. APPLICATIONS(63dB TYP. LONG. BALANCE)
■ SURFACE MOUNT PACKAGE (PLCC44 or PQFP44)
■ INTEGRATED THERMAL PROTECTION
■ PIN TO PIN COMPATIBLE WITH L3035/36