COM20022I3V-HT

Controllers Overview

The COM20022I3V-HT is a 10 Mbps ARCNET controller featuring an integrated 2Kx8 on-chip dual-port RAM buffer. It operates on a single +3.3V supply with 5V tolerant I/O and supports selectable 8-bit or 16-bit wide bus interfaces with data swapping capabilities. The device implements the deterministic ANSI 878.1 token-passing protocol, supporting up to 255 nodes across various network topologies including star, tree, and bus configurations. It includes internal clock scaling and multiplication for network speed adjustment, software-programmable node IDs, and eight 256-byte memory pages for transmission, reception, and scratch-pad operations.

Controllers Feature Summary

• Implements deterministic ANSI 878.1 token-passing ARCNET protocol for predictable real-time response
• Integrates 2Kx8 dual-port RAM buffer with command chaining for packet queuing
• Features flexible media interface supporting traditional hybrid and RS485 differential driver options
• Includes powerful diagnostics, duplicate node ID detection, and receive-all-packets mode

Controllers Applications

• Industrial automation systems requiring deterministic communication
• Factory and building automation networks
• Transportation control applications
• Embedded intelligent peripheral networking

Controllers Procurement Notes

Verify that the specific part number corresponds to the lead-free RoHS compliant package variant. Confirm the revision status matches the required product preview documentation. Ensure compatibility with the target microcontroller's bus width and timing requirements before finalizing procurement orders.

Controllers Selection Notes

Select this component when a dedicated ARCNET controller with integrated memory is required for industrial environments. Consider the 48-pin TQFP package constraints and the -40°C to +85°C operating temperature range. Evaluate the need for 5V tolerant I/O if interfacing with mixed-voltage logic systems.

Controllers Part Context

This device belongs to the family of Embedded ARCNET Controllers from Standard Microsystems Corporation (SMSC). It is designed specifically for networking microcontrollers in industrial and embedded control environments, offering a complete communications node solution when paired with a single microcontroller.

Controllers Replacement Considerations

The COM20022I3V-HD serves as the non-lead-free equivalent within the same package type. Verify pinout compatibility and electrical specifications against legacy designs before substituting.