KS8993F

Specialized ICS Overview

The KS8993F is a single-chip Fast Ethernet media converter and integrated switch manufactured by Microchip Technology (originally Micrel). It integrates three MACs, two physical layer transceivers, frame buffers, and high-performance switching logic. The device supports conversion between 10BASE-T/100BASE-TX copper interfaces and 100BASE-FX fiber interfaces. It includes built-in TS-1000 OAM functions for subscriber access network management. The chip operates on dual power supplies: a 1.8V core voltage and a 3.3V I/O/transceiver voltage. It is housed in a 128-pin PQFP package with an operating temperature range of 0°C to +70°C.

Specialized ICS Feature Summary

• Integrated 3-port 10/100 Ethernet switch with 3 MACs and 2 PHYs
• Supports 10BASE-T, 100BASE-TX, and 100BASE-FX media types
• Built-in TS-1000 OAM with remote loopback and far-end fault detection
• IEEE 802.1q VLAN support for up to 16 groups with per-port tagging
• Programmable rate limiting from 0 to 100 Mbps per port

Specialized ICS Applications

• FTTx subscriber access networks
• 100BASE-FX to 10BASE-T/TX media conversion
• Carrier center to terminal side network management

Specialized ICS Procurement Notes

Verify the manufacturer source carefully, as the component was originally produced by Micrel before its acquisition by Microchip Technology. Confirm the specific revision level against the datasheet M9999-062509 Rev 1.3. Ensure the supply voltage requirements (1.8V core, 3.3V I/O) are met by the system design. Check for moisture sensitivity level (MSL 3) handling requirements during storage and assembly.

Specialized ICS Selection Notes

Select the KS8993F when a single-chip solution is required for converting between copper (UTP) and fiber (FX) Ethernet links. This part is suitable for unmanaged switch applications configured via I/O strapping or EEPROM. Consider the KSZ8993F variant if industrial temperature ranges (-40°C to +85°C) are required, as the standard KS8993F is rated for commercial temperatures only.

Specialized ICS Part Context

The KS8993F belongs to the KS8993 family of integrated switches. It is functionally similar to the KS8993 but specifically optimized as a media converter with TS-1000 OAM capabilities. The KSZ8993F is the industrial temperature grade version of this component. Both variants share the same pinout and feature set, differing primarily in environmental specifications.

Specialized ICS Replacement Considerations

The KSZ8993F is a direct replacement offering industrial temperature rating. The KS8993FL is the single-supply version providing identical features with simplified power requirements.