HI-4851PSTF

Overview

The HI-4851PSTF is a half-duplex RS-485 transceiver manufactured by Holt Integrated Circuits Inc. It supports data transmission rates up to 10 Mbps and operates with a single power supply voltage ranging from 3.0V to 5.5V. The device features a low-power shutdown mode that reduces standby current significantly. It includes integrated protection against electrostatic discharge (ESD) exceeding ±15 kV according to the Human Body Model, and bus fault protection for short circuits to ground or power supplies. The component is housed in an 8-pin Small Outline Package (SOP) and is designed for industrial applications requiring reliable differential communication.

Feature Summary

• Supports high-speed data transfer rates up to 10 Mbps for efficient serial communication
• Integrates robust protection mechanisms including ESD immunity and bus fault tolerance
• Features low-power shutdown capability to minimize energy consumption during idle periods

Applications

• Industrial automation systems requiring robust serial communication links
• Building automation networks utilizing RS-485 protocols
• Test and measurement equipment interfaces

Procurement Notes

Verify the specific suffix 'PSTF' corresponds to the intended package type and temperature grade. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure compatibility with system voltage levels and interface requirements.

Selection Notes

Select this component when a half-duplex RS-485 solution is required with high-speed performance up to 10 Mbps. Consider its integrated protection features for environments prone to electrical noise or transient events. Verify that the 3.0V to 5.5V operating range aligns with the target system's power supply architecture.

Part Context

Holt Integrated Circuits specializes in data bus communication ICs for avionics, military, and industrial markets. The HI-4851PSTF belongs to their RS-485/422 product line, complementing their broader portfolio of ARINC 429 and MIL-STD-1553 solutions designed for embedded microprocessor applications.

Replacement Considerations

Consult official manufacturer substitution guides for verified equivalents. Generic RS-485 transceivers may not match the specific protection ratings or performance characteristics of the HI-4851PSTF.