SI85853D-IS

Drivers, Receivers, Transceivers Overview

The SI85853D-IS is a half-duplex isolated RS-485 transceiver from the Si858x family, manufactured by Skyworks Solutions. It provides 5 kV RMS isolation and supports data rates up to 1 Mbps with slew-rate-controlled drivers. The device operates on a logic supply (VDD1) of 2.5 V to 5.5 V and a transceiver supply (VDD2) of 4.75 V to 5.25 V. Key electrical parameters include a typical driver propagation delay of 10 ns, receiver propagation delay of 42 ns, and common-mode transient immunity (CMTI) of 100 kV/µs. It features ±30 V bus fault protection, 15 kV HBM ESD ratings, and thermal shutdown.

Drivers, Receivers, Transceivers Feature Summary

• Integrates robust RS-485 signaling with silicon-based digital isolation for noise immunity.
• Features slew-rate controlled drivers to reduce electromagnetic interference (EMI).
• Includes comprehensive protection mechanisms such as bus fault tolerance and thermal shutdown.
• Supports up to 256 unit loads on the bus for extensive network configurations.

Drivers, Receivers, Transceivers Applications

• Industrial automation systems
• Programmable Logic Controllers (PLCs)
• Data acquisition networks
• Isolated switch mode power supplies

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'IS' corresponds to the Wide SOIC-16 package and reel packaging configuration. Confirm that the VDD2 supply voltage requirements align with the 5.0 V rated specifications defined in the datasheet. Ensure compliance with moisture sensitivity levels and handling precautions during assembly.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication with moderate data rates up to 1 Mbps. The integrated slew rate control makes it suitable for environments where EMI reduction is critical. Ensure the design accommodates the separate VDD1 and VDD2 power domains and includes appropriate bypass capacitors near the pins.

Drivers, Receivers, Transceivers Part Context

This device belongs to the Si858x series of isolated RS-485 transceivers. It shares the same functional architecture and pinout structure as other members like the SI85833D-IS and SI85858D-IS, differing primarily in duplex mode and maximum data rate capabilities within the same industrial footprint.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements within the same family include SI85833D-IS for 3.3V logic side or SI85857D-ISR for full-duplex operation. Verify package compatibility and supply voltage ranges when substituting with other Si858x variants.

Drivers, Receivers, Transceivers FAQ

What is the maximum data rate supported by the SI85853D-IS?

The SI85853D-IS supports a maximum data rate of 1 Mbps.

Does this device support full-duplex communication?

No, the SI85853D-IS is a half-duplex transceiver. Full-duplex options are available in the Si858x family, such as the SI85857D-IS.

What is the Common Mode Transient Immunity (CMTI) rating?

The device has a minimum CMTI rating of 100 kV/µs.