ISO7021FDR – TEXAS INSTRUMENTS

The Texas Instruments ISO7021FDR is a high-speed, digital isolator featuring a 2-channel, unidirectional data transmission capability. Specifically designed for robust signal isolation in industrial and automotive applications, it utilizes a capacitive isolation technique achieving a minimum 5kVrms isolation voltage rating. Data transmission operates at speeds up to 100Mbps, leveraging a robust LVDS (Low Voltage Differential Signaling) interface. The device operates from a wide supply voltage range of 2.7V to 5.5V, exhibiting low propagation delays (typically <10ns) and low power consumption (typically <15mW). Packaged in a space-saving 8-pin SOIC (Small Outline Integrated Circuit) package, the ISO7021FDR simplifies PCB layout. Its key advantage lies in its superior noise immunity and galvanic isolation, protecting sensitive microcontroller units (MCUs) or other digital circuitry from high-voltage transients and ground loops commonly encountered in harsh industrial environments. Common use cases include isolating sensor signals in industrial automation, providing safety isolation in automotive control systems, and preventing ground-related interference in high-speed data acquisition systems. Its high speed and robust isolation make it particularly suitable for applications demanding high bandwidth and reliable data transfer in electrically noisy environments.