The ISO7842FDWR from Texas Instruments is a cutting-edge, high-performance, quad-channel digital isolator designed to offer robust signal isolation for various applications. This isolator is part of TI's ISO784x family of devices that provide high electromagnetic immunity and low emissions at low power consumption, while maintaining a high level of signal integrity.

Key Features

• Robust Isolation: With an isolation voltage of 5,000 Vrms for 1 minute, the ISO7842FDWR ensures reliable operation in harsh electrical environments. Its reinforced insulation provides safety and protection for sensitive circuits.
• High Data Rates: The device supports data rates up to 100 Mbps, making it suitable for high-speed digital interfaces such as SPI, I2C, or UART.
• Low Propagation Delay: The typical propagation delay of 11 ns with a 5 ns pulse width distortion ensures minimal signal timing changes during isolation.
• Quad-Channel Configuration: The four independent isolation channels can be used bidirectionally and offer flexibility in design, with options for 3 forward and 1 reverse-direction channels or 2 forward and 2 reverse-direction channels.
• Fail-Safe Outputs: The device has fail-safe outputs that default to a logic high state when the inputs are inactive, enhancing system safety.
• Wide Temperature Range: It operates reliably over a wide temperature range from -40°C to +125°C, making it suitable for industrial applications.

Applications

The ISO7842FDWR is ideal for use in a variety of applications where signal integrity and isolation are critical. These include industrial automation systems, motor control circuits, medical equipment, power supplies, and any other systems that require electrical isolation for safety and noise immunity.

Package and Quality

This device is available in a 16-pin SOIC wide-body (DW) package that offers a compact footprint while still providing sufficient clearance and creepage distances to meet safety standards. The ISO7842FDWR is also characterized for partial discharge performance to ensure long-term reliability. It is compliant with key industry standards, ensuring ease of integration into existing designs.