Texas Instruments Introduces SN65HVD96 Symmetric Polarity Transceiver
Texas Instruments Introduced SN65HVD96, a new symmetric polarity transceiver that protects the system from communication losses and potential damage should the signal wires be inadvertently reversed during installation or maintenance. The SN65HVD96, using TI’s patent-pending SymPol™ technology, provides high bus fault protection, making it desirable for harsh industrial environments where third-party installers often make the connections. The inverted bus wires are detected internally and corrected automatically, eliminating the need for intervention by the controller or operator without the need for firmware changes.
SN65HVD96 Symmetric Polarity Transceiver
(Photo from TI Website)
Key features and benefits
Reversed-wire-immunity saves the technical time-consuming fail search should a crossed-wire mistake be made.
Using the same pin-out as RS-485 eliminates the need for board redesigns.
Bus pins survive faults of up to –35V to +40V, minimizing damage from direct shorts to typical 24 Vac HVAC supplies.
High input impedance for up to 32 nodes allows multiple nodes on a single network, reducing system cost by eliminating repeaters.
The SN65HVD96 is available now in a SOIC (D) package with eight pins and is priced at $1.20 in quantities of 1,000.
More information about Symmetric Polarity Transceiver can be found at TI Website