74HC574N (Octal D Flip Flop 3-State) heating 3V power supply which is

3V power supply which is compatible with Arduino UNO/Mega

74HC564: but has non-inverting outputs

For 74HC266 datasheet Click Here

4 digital input input protected by opto-coupler

Number of hosts: can support 2 hosts connected at the same time Configuration method: serial port configuration tool

74HC574N (Octal D Flip Flop 3-State) heating 3V power supply which isProduct Description The 74HC574 are octal D type flip flops featuring separate D type inputs for each flip flop and 3 state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all flip flops. The 8 flip flops will store the state of their individual D inputs that meet the set up and hold times requirements on the LOW to HIGH CP transition. When OE is LOW the contents of the 8 flip flops are available at