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This can usually be implemented by enabling an internal pull-up on the uC data pin
Supply Voltage Range: 2V to 6V
Compared to the previous version the ESD sensitivity level has been improved to 4kV on all pins
Propagation Delay Time: 170 ns at 2V / 29 ns at 6V
thus no external antenna coil is needed
74HC74N (Dual D-type flip-flop ) 74155 This can usually be implementedIntroduction : 74HC74N (Dual D type flip flop with set and reset positive edge trigger). 74HC74 is a dual positive edge triggered D type flip flop. They have individualdata (nD), clock (nCP), set (nSD) and reset (nRD) inputs, and complementary nQ and nQ outputs. Data at the nD input, that meets the set up and hold time requirements on the LOW to HIGH clocktransition, is stored in the flip flop and appears at the nQ output. Schmitt trigger action in