HL6210B-01 Westminster Clock Chime(Tube-Bell)

Semis Semis-din


HL6210B is a monolithic CMOS IC designed specially for doorbell. In order to reduce the cost of doorbell, HL6210B consists of a preamplifier, a decoder, a melody generator, and a speech synthesizer and power amplifier. The speech synthesizer uses high sampling rate and DSP technology to obtain high sound quality. The decoder has 10 address bits and 2 data bits or 8 address bits and 4 data bits, which can be selected by bonding option (SO16 pin). When 2 data bits are used, 4 different songs or chimes can be chosen by the data bit of transmitter. When 4 data bits is used, 16 different songs or chimes can be chosen. The sound of HL6210B-01 simulates the sound of tube-bells. HL6210B series uses speech synthesizer to generate sound, and it can simulate many kinds of instrument.

The HL6210B can accept the signal generates by HT-12E or PTC 2262. During the standby state, the only consumption current is for preamplifier circuit, which is about 20uA. All the other circuit will not be activated. There is an activation protection circuit designed in HL6210B. The logic circuit will not activated by noise. The power amplifier of HL6210B is designed as a class B amplifier. The current of the whole chip when speaker ON is about 20mA (VDD = 3V) or about 50mA (VDD = 4.5V).

When used as an AC type doorbell, the power can be feed by a 1uf capacitor (or 2uf capacitor) from AC power line. When 1uf capacitor is used, the working voltage of the system is about 3V. When 2uf capacitor is used, the working voltage of the system is about 4.5V. There is a working voltage select pin. If this pin is connected to VDD, the working voltage is 3V. If this pin is connected to VSS, the working voltage is 4.5V. The power amplifier is an OTL type power amplifier. The speaker can be connected to the output through a 200uf capacitor.


  • 2048 notes
  • Maximum 64 songs
  • IR or RF remote control
  • Class B power amplifier
  • Pre-amplifier, decoder, melody, generator, speech synthesizer and power amplifier built-in on chip
  • Low power consumption
  • Low stand-by current
  • 3V or 4.5V working voltage
  • HT12 or PTC 2262 compatible
  • High quality timber of Tube-bell
  • Timber programmable by ROM code
  • Low noise