Massimo Caprioli is a field application engineer with Maxim Integrated Products, Italy. He has a diploma in industrial electronics from ITIS Vimercate (Mi), Italy. Email address: Massimo_Caprioli@maximhq.com
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June 21, 2007[Ideas For Design] Create RS-485 Adapter To Convert Data Lines From Full- To Half-Duplex
Multiprotocol interface ICs can be used to connect a UART to an RS-485 bus architecture called point-to-point full-duplex (PTP-FD). The PTP connection usually requires drivers and receivers to be constantly enabled, and therefore "present" on the line. So when such a circuit board must fit into a point-to-multipoint, half-duplex system (PTM-HD), the entire board (usually) must be redesigned. A simple trick, though, can adapt an existing PTP-FD board, which provides a single...
