Circuit - On-Off Latch Circuit 6 - Circuits designed by David A. Johnson, P.E.

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Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, November 30, 2011 03:59 PM

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More Latch Circuits

On/Off Latch Circuit 6 (January 9, 2010)

Often you want to turn on and off power to a device with a single pushbutton switch. The circuit below performs this logic function with just a few tiny parts and can operate from DC supplies between +2v and 5v. It uses two inverters within a 6 pin SN74LVC2G14 device from Texas Instruments. Each press of the button toggles between the two on/off logic states. The logic output is connected to a PMV65XP p-channel FET from Philips. This component should be able to handle 2 amps of current

Click on Drawing Below to view PDF version of Schematic