ELM440 Description
The ELM440 is an 8 pin digital divider integrated circuit, that provides both 60Hz 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 60Hz signal.
ELM440 Key Features
- Low power CMOS design
- Wide supply range
- 3.0 to 5.5 volt operation
- Generates both 60Hz and 1Hz references
- Automatically synchronizes to the line frequency for long term stability, when it’s available
- Uses a standard 3.58MHz crystal for the time reference if there is no sync input
- High current drive outputs
- up to 25 mA