74HC153 ( Dual 4-input Multiplexer) 7483 separated by only a few

separated by only a few microns

74HC02 Quad 2-Input NOR Gate

Type: 100k Ohm NTC 3950

and could be used to detect both Methane and Propane

Accurate irrigation decicions

74HC153 ( Dual 4-input Multiplexer) 7483 separated by only a fewIntroduction : 74HC153 is a dual 4 input multiplexer. The device features independent enableinputs (nE) and common data select inputs (S0 and S1). For each multiplexer, the select inputsselect one of the four binary inputs and routes it to the multiplexer output (nY). A HIGH on E forcesthe corresponding multiplexer outputs LOW. Inputs include clamp diodes. This enables the use ofcurrent limiting resistors to interface inputs to voltages in excess of