74HC138 (3 to 8 Line Decoder- Demultiplexer) ESP32-CAM With a simple three serial

With a simple three serial SPI interface

Max Current : 100mA

the range from  2cm to 400cm

The adder logic

Supply Voltage: 3

74HC138 (3 to 8 Line Decoder- Demultiplexer) ESP32-CAM With a simple three serialIntroduction : The 74HC138 decodes three binary weighted address inputs (A0, A1 and A2) toeight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1, E2 andE3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enablefunction allows easy parallel expansion to a 1 of 32 (5 to 32 lines) decoder with just four '138 ICsand one inverter. 74HC138 can be used as an eight output demultiplexer by