![]() It can also be used to control 5V loads like relays through a 3.3V microcontroller since the high-level voltage is only 3.15. It can also be used to interface LCD screen since they can acts as the data bit for the LCD displays. ![]() It is often used in projects where relatively a large number of LED’s has to be controlled through the Microcontroller. This comes in very handy where do not have enough GPIO pins on our MCU/MPU to control the required number of outputs. it can receive (input) data serially and control 8 output pins in parallel. The 74HC595 is an 8-bit Serial In – Parallel Out Shift Register, i.e. Note: Complete technical details can be found in the 74HC595 datasheet given at the end of this page.Ĥ-Bit Parallel in Parallel out Shift Register
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