74HC85 (4-bit Magnitude Comparator) Relay Digital Temperature Sensor DS18B20 is

Digital Temperature Sensor DS18B20 is a one-wire digital temperature sensor

Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC

Motion tracking

Programmable square wave output

74HC85 (4-bit Magnitude Comparator) Relay Digital Temperature Sensor DS18B20 isIntroduction : 74HC85 is a 4 bit magnitude comparator that can be expanded to almost any length. They perform comparison of two 4 bit binary, BCD or other monotonic codes and present the three possible magnitude results at the outputs (QA>B, QA=B and QA<B). The 4 bit inputs are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits. For proper compare operation the expander inputs (IA>B, IA=B and IA<B)to the least significant