AM79C989JC

Overview

The AM79C989JC is a quad Ethernet switching transceiver manufactured by Advanced Micro Devices. It integrates four independent Ethernet transceivers into a single component, designed for high-density network applications. The device operates within the standard Ethernet protocol framework and supports data transmission rates of 10/100 Mbps. It is housed in a 44-pin PLCC package with dimensions of 16.59x16.59 mm. This integrated solution reduces board space requirements while providing reliable physical layer connectivity for multiple Ethernet ports simultaneously.

Feature Summary

• Integrates four independent Ethernet transceivers into a single chip
• Supports 10/100 Mbps data transmission rates
• Designed for high-density network interface applications

Applications

• Industrial PC networking systems
• Embedded networking equipment
• Multi-port Ethernet switch designs

Procurement Notes

Verify the specific manufacturer source, as this component has been transferred to Xilinx and subsequently AMD. Confirm package availability and authenticity through authorized distributors. Check for updated datasheets reflecting current manufacturing status. Ensure compatibility with existing system designs before procurement.

Selection Notes

Select this component when a compact solution for four Ethernet ports is required. Consider the 44-PLCC package constraints for PCB layout. Evaluate power consumption and thermal requirements for the specific application environment. Verify signal integrity specifications against the target network topology.

Part Context

This part belongs to the family of Ethernet transceivers developed by Advanced Micro Devices. It represents a specialized integration of physical layer components for multi-port connectivity. The technology reflects the design standards for 10/100 Mbps Ethernet interfaces prevalent during its production era.

Replacement Considerations

Check for direct substitutes from AMD or Xilinx. Verify pin compatibility and electrical characteristics before substitution. Consult official documentation for any recommended alternative parts.