HI-4855PSTF

Overview

The HI-4855PSTF is a low-power RS-485/RS-422 transceiver manufactured by Holt Integrated Circuits. It operates from a single 3.3V supply and supports data rates up to 10 Mbps. The device features one driver and one receiver, with differential outputs and inputs designed for robust communication in noisy environments. It includes thermal shutdown and short-circuit protection to ensure reliability during fault conditions.

Feature Summary

• Supports RS-485 and RS-422 communication standards
• Operates on a single 3.3V power supply
• Includes integrated thermal shutdown and short-circuit protection

Applications

• Industrial automation systems
• Building control networks
• Data acquisition systems

Procurement Notes

Verify the specific suffix PSTF against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with system voltage requirements before procurement.

Selection Notes

Select this component when a single-channel, half-duplex RS-485 interface is required at 3.3V. Compare pinout and electrical characteristics with existing designs to ensure direct replacement feasibility without schematic changes.

Part Context

Holt Integrated Circuits specializes in avionics and industrial data bus solutions. The HI-4855 series addresses the need for reliable serial communication in harsh environments, complementing their broader portfolio of MIL-STD-1553 and ARINC 429 components.

Replacement Considerations

Check for equivalent parts from other manufacturers offering similar 3.3V RS-485 transceivers with comparable pinouts and protection features.