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When there is light
It feature single pole
It can be addressed by external A0 address pin
Reading diatance: up to 3 cm
74HC151 (8-input Multiplexer) Distance Measuring Module When there is lightIntroduction : 74HC151 is an 8 bit multiplexer with eight binary inputs (I0 to I7), three select inputs(S0 to S2) and an enable input (E). One of the eight binary inputs is selected by the select inputsand routed to the complementary outputs (Y and Y). A HIGH on E forces the output Y LOW andoutput Y HIGH. Inputs also include clamp diodes that enable the use of current limiting resistors tointerface inputs to voltages in excess of VCC Features :