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3.3-V 10Base-T/100Base-TX Integrated PHYceiver™

The IDT1893AF is a lower cost, re-packaged version of the IDT1893Y-10. The IDT1893AF is a fully integrated, Physical Layer device (PHY) that is compliant with both the 10Base-T and 100Base-TX CSMA/CD Ethernet Standard, ISO/IEC 8802-3. The IDT1893AF uses the same proven silicon as the IDT1893Y-10 but offers a lower cost solution by using a lower cost 300 mil. 48-lead SSOP package. The IDT1893AF uses the same twisted-pair transmit and receive circuits as the IDT1893Y-10, and the same recommended board layout techniques apply to the IDT1893AF. The IDT1893AF is intended for Node applications using the standard MII interface to the MAC.


  • Single 3.3V power supply
  • Supports category 5 cables with attenuation in excess of 24dB at 100 MHz.
  • DSP-based baseline wander correction to virtually eliminate killer packets
  • Low-power, 0.35-micron CMOS (typically 400 mW)
  • Single-chip, fully integrated PHY provides PCS, PMA, PMD, and AUTONEG sublayers of IEEE standard
  • 10Base-T and 100Base-TX IEEE 802.3 compliant
  • Clock or crystal supported
  • Media Independent Interface (MII) supported
  • Managed or Unmanaged Applications
  • 10M or 100M Half and Full Duplex Modes
  • Auto-Negotiation with Parallel detection for Legacy products
  • 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 encoderLoopback mode for Diagnostic Functions
  • Small footprint 48-pin 300 mil SSOP package.
  • Available in Industrial Temperature and Lead Free packaging.

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
1893AFILFObsoletePVG48SSOP48IYesTubeCheck Availability
1893AFILFTObsoletePVG48SSOP48IYesReelCheck Availability
1893AFLFObsoletePVG48SSOP48CYesTubeCheck Availability
1893AFLFTObsoletePVG48SSOP48CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
1893AF Datasheet Datasheet PDF 1 KB May 14, 2010
PDN# : CQ-15-01 (R1) Quarter PDN for Declined Market Product Discontinuation Notice PDF 550 KB Mar 11, 2015
PDN# : CQ-15-01 Quarter PDN for Declined Market Product Discontinuation Notice PDF 547 KB Jan 23, 2015
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013