ELM337 Datasheet

Datasheet: ELM337 datasheet

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Description: ELM337 Light Switch Description The ELM3 37 provides a convenient means to inter face standard photocells or light depen dent resistors (LDRs) to digital logic circuits. It provides an input comparat or with hysteresis, line frequency filt ering, digital delays, and high current output drivers all within the one 8 pi n package. Three mode setting pins conf igure the ELM337 for pulse or continuou s output and for a delay on change of f rom 1 msec to 10 minutes. The transitio n threshold is set with a single extern al resistor, simplifying designs and mi nimizing costs. www.DataSheet4U.com App lications need not be limited to those employing photocells, as the Example Ap plications section shows. The Schmit