L3000S Datasheet PDF - STMicroelectronics

DESCRIPTION
The ST SLIC KIT (L3000S/L3030)is a set of solid statedevices designedto integratemain of the functions needed to interface a telephone line. It consists of 2 integrated devices : the L3000S line interface circuit and the L3030 control unit.

■ PROGRAMMABLE DC FEEDING RESIS-TANCE AND LIMITINGCURRENT
   (fourvalues available)
■ THREE OPERATING MODES :
   STAND-BY, CONVERSATION, RINGING
■ NORMAL/BOOSTBATTERY,DIRECT/REVERSE POLARITY
■ SIGNALLING FUNCTION (off-hook/GND-key)
■ FILTERED OFF-HOOK DETECTION IN
   STAND-BY (10ms)
■ QUICK OFF-HOOK DETECTION IN CONVERSATION (< 1ms)
   FOR LOW DIAL PULSE DETECTION DISTORTION
■ HYBRID FUNCTION
■ RINGING GENERATION WITH QUASI ZERO
   OUTPUT IMPEDANCE, ZERO CROSSING INJECTION
   (no ext. relay needed) AND RING TRIP DETECTION
■ AUTOMATIC RINGING STOP WHEN OFFHOOK IS DETECTED
■ PARALLEL AND SERIAL DIGITAL INTERFACES
■ TELETAXESIGNALINJECTION(2VRMS/5VRMS)
■ LOW NUMBER OF EXTERNAL COMPONENTS
■ GOOD REJECTION OF THE NOISE ON BATTERY VOLTAGE
   (20dB at 10Hz and 35dB at 1kHz)
■ POSSIBILITY TO WORK ALSO WITH HIGH
   COMMON MODE CURRENTS
■ INTEGRATED THERMAL PROTECTION WITH
   THERMAL OVERLOADINDICATION
■ SURFACE MOUNT PACKAGE
   (PLCC44 + PowerSO-20)