ICS1893BFIT

Controllers Overview

The ICS1893BFIT is a low-power, single-chip physical-layer device (PHY) supporting ISO/IEC 10Base-T and 100Base-TX Ethernet standards. It integrates PCS, PMA, PMD, and Auto-Negotiation sub-layers compliant with IEEE 8802.3. The device operates on a single 3.3V supply, consuming typically 400 mW during active operation and 21 mW in power-down mode. It features a DSP-based PMD for adaptive equalization and baseline-wander correction, enabling transmission over Category 5 cables with attenuation exceeding 24 dB at 100 MHz. The component provides MII and Serial Management Interfaces and supports full/half-duplex modes at 10 Mb/s or 100 Mb/s.

Controllers Feature Summary

• Integrates fully functional PHY layers including PCS, PMA, PMD, and Auto-Negotiation within a single chip.
• Incorporates Digital-Signal Processing (DSP) control for adaptive equalization and baseline-wander correction to mitigate errors from killer packets.
• Supports automatic crossover error correction via the Auto-MDI/MDIX feature for flexible plant wiring configurations.
• Provides configurable Media Independent Interface (MII) and Serial-Management Interface for system integration.

Controllers Applications

• Network Interface Cards (NIC)
• PC Motherboards
• Ethernet Switches and Routers
• DSL and Cable Modems

Controllers Procurement Notes

Verify the specific ordering suffix 'IT' against the manufacturer's current documentation to confirm package type and temperature rating. Confirm RoHS compliance status as legacy parts may have transitioned to non-green manufacturing phases. Ensure the source document matches the exact part number revision to avoid discrepancies in pinout or electrical characteristics.

Controllers Selection Notes

Select this component for designs requiring integrated 10/100 Mbps PHY functionality with minimal external components. Verify that the host MAC interface supports the required MII protocol. Consider the 48-pin SSOP footprint constraints during PCB layout. Ensure the application environment remains within the commercial temperature range specified for this variant.

Controllers Part Context

The ICS1893BF belongs to the PHYceiver™ series of integrated Ethernet physical layer devices originally developed by Integrated Device Technology (IDT). IDT was subsequently acquired by Renesas Electronics Corporation. This specific model represents a standard commercial-grade version packaged in a 48-lead shrink small-outline package (SSOP), distinct from industrial variants or alternative packages like the MLF2.

Controllers Replacement Considerations

The datasheet notes that the ICS1893BF shares circuitry with the ICS1893AF but is not a pin-for-pin replacement. Designers must consult application notes for dual-footprint layouts if substituting between these specific models. No other direct substitute part numbers are documented in the provided source material.