address bus. To demultiplex the address signals from the address/data pins (AD0-AD15) a latch must be used to grab the addresses. - In 8086 microprocessorExplain 8085 MP with the help of multiplexing and Demultiplexing of Buses. The data bus and the low order address bus on the 8085 microprocessor are multiplexed Introduction The address bus has 8 signal lines A8 – A15 which are unidirectional. Demultiplexing of AD7-AD0 From the above description, it becomes The low – order address bus of the 8085 microprocessor is multiplexed (time shared) with the data bus . The buses need to be demultiplexed. ALE signal is used to demultiplex the lower order address bus (AD0 – AD7). Pins 12 to 19 of 8085 are AD0 – AD7 which is the multiplexed address-data bus.