UM3483EESA

Drivers, Receivers, Transceivers Overview

The UM3483EESA is a 3.3V-powered, true RS-485 transceiver manufactured by Union Semiconductor International Limited. It integrates one driver and one receiver in an SOIC-8 package. The device supports data signaling rates up to 12Mbps with slew-rate limiting for errorless transmission. It features ±15kV ESD protection on I/O ports and operates from a single 3.3V supply without requiring a charge pump. The common-mode input voltage range extends from -7V to +12V, allowing up to 32 transceivers on the bus. Operating temperatures range from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited output drivers ensure errorless data transmission at high speeds.
• Integrated ±15kV ESD protection on all I/O ports enhances system reliability.
• Operates directly from a single 3.3V supply, eliminating the need for external charge pumps.

Drivers, Receivers, Transceivers Applications

• Industrial communication networks
• Building automation systems
• Multi-drop bus configurations

Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer marking matches Union Semiconductor International Limited to distinguish from Maxim Integrated equivalents. Confirm the suffix 'ESA' indicates the SOIC-8 surface-mount package. Ensure the component meets the required industrial temperature range specifications for the target application environment before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a half-duplex RS-485 interface is required with high-speed data transfer capabilities up to 12Mbps. It is suitable for designs needing robust ESD protection and simplified power management via a single 3.3V rail. Compare against MAX3483 variants if specific pinout or electrical tolerances differ significantly for the existing board layout.

Drivers, Receivers, Transceivers Part Context

This part belongs to the UM3483E family of low-power RS-485 transceivers. It serves as a functional equivalent to the Maxim Integrated MAX3483 series, providing similar electrical characteristics and pinouts. The family includes variations such as the UM3483EEPA in DIP packages, offering flexibility for different mounting requirements while maintaining core RS-485 protocol compliance.

Drivers, Receivers, Transceivers Replacement Considerations

The Maxim Integrated MAX3483EESA+ is a direct pin-compatible substitute. Verify that the replacement's ESD protection levels and propagation delay times align with the original design constraints. Check for any differences in shutdown current consumption if power efficiency is critical.