Other than using a 555 as a schmitt trigger... [image] I bought 5 off these off of ebay, I was looking for a simple case of, feed the analogue voltage signal in, 1v, 2v, 4v, 5v, etc, and simply have two states, high or low, so in my head I had this Voltage DC In > Voltage DC 5v High, Voltage 0v L…

Schmitt Trigger.

system November 20, 2012, 12:07pm 9

74LS81

can't find any info on it, got a datasheet?