ELM337 - Light Switch

ELM Electronics

Datasheet Details

The ELM337 provides a convenient means to interface standard photocells or light dependent resistors (LDRs) to digital logic circuits.

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 Connection Diagram PDIP and SOIC (top view) VDD 1 M2 2 M1 3 M0 4 8 VSS 7 Light 6 Dark 5 LDR Block Diagram LDR 5 Line Frequency Detector Program.

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Published: Aug 1, 2008 |