Datasheet Summary
ELM446 50Hz Generator
Description
The ELM446 is an 8 pin digital divider integrated circuit, that provides both 50Hz and 1Hz outputs from a mon 3.58MHz NTSC colourburst crystal. Externally, the designer need only provide the crystal and two appropriate loading capacitors, as well as a suitably bypassed power supply. Internal oscillator circuits then use this reference frequency to precisely derive a stable 50Hz signal. For convenience, a plementary 50Hz signal is also provided. This signal is then further divided to provide a 1Hz signal output. A reset input is provided to restart the internal counters, if desired. An active low signal on this pin will also force all of the outputs...