TCM1520A Datasheet (Texas Instruments)

TCM1520A, Ring Detector

ą TCM1520A RING DETECTOR ą SCTS005B OCTOBER 1984 REVISED DECEMBER 1990 On-Chip 150-V Bridge Diode Configuration Reliable BIDFET† Technology High Standby Impedance .

1 MΩ Typ Efficient High-Voltage Operation Output Compatible With TTL, NMOS, and CMOS Built-In 5-V Series Regulator Built-In Lightning and Transient Protection D OR P PACKAGE (TOP VIEW) AC INPUT 1 INVERTING OUTPUT 2 COMMON 3 5-V OUTPUT

TCM1520A Features

* efficient high-voltage (40 V to 150 V) operation with a typical current drain of 1 mA. Phone Line AC Ring Signal TCM1520A Electronic Telephone or Accessory TTL /NMOS/CMOS Microprocessor During standby, the input impedance is approximately 1 MΩ or greater, which prevents any interference with paral