ISO7021FD/R – TEXAS INSTRUMENTS

The ISO7021FD/R is a single-channel, digital isolator from Texas Instruments, employing capacitive coupling for galvanic isolation. It features a 2.5kVrms isolation voltage rating, crucial for applications demanding robust electrical isolation. This device operates from a wide supply voltage range of 2.7V to 5.5V, making it versatile across various power domains. The data rate is specified at 100Mbps, ensuring high-speed communication across isolated sections. Packaged in a space-saving SOIC-8 (small outline integrated circuit with 8 pins) format, it simplifies PCB layout._x000D_
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Its key advantage lies in its robust common-mode transient immunity (CMTI) exceeding 25kV/µs, providing protection against high-voltage transients often encountered in industrial and automotive environments. Typical use cases include isolating microcontrollers from high-voltage peripherals, protecting sensitive analog circuitry from digital noise in mixed-signal systems, and implementing safety barriers in medical equipment. The ISO7021FD/R’s low propagation delay and high data rate make it suitable for real-time control applications where latency is a critical factor. Its wide supply voltage range eliminates the need for separate voltage regulators in many designs, simplifying the overall system architecture.