The IDT1893Y-10 is a low-power, physical-layer device (PHY) that supports the ISO/IEC 10Base-T and 100Base-TX Carrier-Sense Multiple Access/Col lision Detection (CSMA/CD) Ethernet standards. The IDT1893Y-10 architecture is based on the IDT1892. The IDT1893Y-10 supports managed or unmanaged node, repeater, and switch applications. The IDT1893Y-10 incorporates digital signal processing (DSP) in its Physical Medium Dependent (PMD) sublayer. As a result, it can transmit and receive data on unshielded twisted-pair (UTP) category 5 cables with attenuation in excess of 24 dB at 100 MHz. With this IDT-patented technology, the IDT1893Y-10 can virtually eliminate errors from killer packets. The IDT1893Y-10 provides a Serial Management Interface for exchanging command and status information with a Station Management (STA) entity. The IDT1893Y-10 Media Dependent Interface (MDI) can be configured to provide either half- or full duplex operation at data rates of 10 MHz or 100 MHz. The MDI configuration can be established manually (with input pins or control register settings) or automatically (using the Auto-Negotiation features). When the IDT1893Y-10 Auto-Negotiation sublayer is enabled, it exchanges technology capability data with its remote link partner and automatically selects the highest-performance operating mode they have in common.


  • Supports category 5 cables with attenuation in excess of 24 dB at 100 MHz
  • Fully integrated, DSP-based PMD includes:
  • – Adaptive equalization and baseline wander correction– Transmit wave shaping and stream cipher scrambler– MLT-3 encoder and NRZ/NRZI encoderLow-power, 0.35-micron CMOS (typically 400 mW)
  • Single 3.3-V power supply.
  • Single-chip, fully integrated PHY provides PCS, PMA, PMD, and AUTONEG sublayers of IEEE standard
  • 10Base-T and 100Base-TX IEEE 802.3 compliant
  • Highly configurable design supports:
  • – Node, repeater, and switch applications– Managed and unmanaged applications– 10M or 100M half- and full-duplex modes– Parallel detection– Auto-negotiation, with Next Page capabilitiesMAC/Repeater Interface can be configured as:
  • – 10M or 100M Media Independent Interface– 100M Symbol Interface (bypasses the PCS)– 10M 7-wire Serial InterfaceSmall Footprint 64-pin Thin Quad Flat Pack (TQFP)
  • Available in Industrial Temperature and Lead Free

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
1893Y-10LF Active TQFP 64 C Yes Tray Package Info
1893Y-10LFT Active TQFP 64 C Yes Reel Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
1893Y-10 Datasheet Datasheet PDF 1.12 MB
User Guides & Manuals
1893 Ethernet Phyceiver User Design Guide Manual - User Reference PDF 133 KB
Application Notes & White Papers
General Layout Guidelines for 1893 Application Note PDF 70 KB
1893 Operation without Magnetics Application Note DOC 43 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : TB1405-01 New Carrier Tape and Quantity per Reel Product Change Notice PDF 788 KB