ELM337 Description
The ELM337 provides a convenient means to interface standard photocells or light dependent resistors (LDRs) to digital logic circuits. It provides an input parator with hysteresis, line frequency filtering, digital delays, and high current output drivers all within the one 8 pin package. Three mode setting pins configure the ELM337 for pulse or continuous output and for a delay on change of from 1 msec to 10 minutes.
ELM337 Key Features
- Low power CMOS design
- typically 1mA at 5V
- Operates from 3V to 5.5V
- No external timing elements required
- Low parts count
- Digitally selected delays of up to 10 minutes
- Pulsed or continuous outputs
- Internal line frequency filtering
- High current drive outputs
- up to 25 mA
ELM337 Applications
- very useful for sequencing processes