Texas Instruments IC TRANSCEIVER HALF 1/1 8SOIC SN65HVD21MDREPG4

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The part number SN65HVD21MDREPG4 refers to a Texas Instruments RS-485 transceiver IC designed for full-duplex communication. It operates at 3.3V and is suitable for data transmission in noisy industrial environments where robustness against electromagnetic interference (EMI) is crucial. This component enables reliable, multi-drop serial communications over long distances and supports differential signaling for improved noise immunity. The 'MDR' variant likely indicates it comes in a small MicroSOIC package with enhanced ESD protection, ideal for space-constrained applications requiring high reliability.