ST RS-485: powering next-gen industrial connectivity
Reliable communication with built-in ESD protection
Meet ST’s low-power differential line transceivers
Designed for robust communication in industrial automation and other demanding field applications.
Our ST4E series deliver reliable RS-485 links for factory equipment, control systems, building networks, and metering systems, with strong ESD protection and stable data exchange in electrically noisy environments. They meet or exceed the requirements of the TIA/EIA-485-A standard, helping ensure dependable interoperability in industrial networks.
These compact devices help designers build resilient, high-speed connectivity solutions for distributed industrial applications.
Applications
Industrial automation
Building automation
Smart metering
Robotics
Factory equipment communication
Process control systems
Use cases and application examples
Discover our offer
ST4E1250F
50 Mbps, 3.3 V / 5 V full-duplex RS-485 transceiver with ± 12 kV IEC 61000-4-2 contact ESD protection
ST4E1650F
50 Mbps, full-duplex RS-485 transceiver with ± 16 kV IEC 61000-4-2 contact ESD protection
ST4E1651
50 Mbps, half-duplex RS-485 transceiver with ±16 kV IEC 61000-4-2 contact ESD protection.
Why choose the new ST4E transceivers?
- Robust RS-485 communication for industrial applications
- Strong ESD protection and high immunity in noisy environments
- Reliable long-cable data transmission with fast or low-speed operation
- Easy system integration across a wide range of RS-485 designs
- Industrial-grade performance across a wide temperature range
- Available in legacy packages and compact DFN8 and DFN10 options
- PROFIBUS-compatible operation with 5 V supply support
