The IDT1893BF is a low-power, physical-layer device (PHY) that supports the ISO/IEC 10Base-T and 100Base-TX Carrier-Sense Multiple Access/Collision Detection (CSMA/CD) Ethernet standards, ISO/IEC 8802-3. The IDT1893BF is intended for MII, Node applications that require the Auto-MDIX feature that automatically corrects crossover errors in plant wiring. The IDT1893BF incorporates Digital-Signal Processing (DSP) control in its Physical-Medium Dependent (PMD) sub layer. 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 100MHz. With this IDT-patented technology, the IDT1893BF can virtually eliminate errors from killer packets. The IDT1893BF provides a Serial-Management Interface for exchanging command and status information with a Station-Management (STA) entity. The IDT1893BF Media-Dependent Interface (MDI) can be configured to provide either half- or full duplex operation at data rates of 10 Mb/s or 100Mb/s.


  • Supports category 5 cables with attenuation in excess of 24dB at 100 MHz.
  • Single-chip, fully integrated PHY provides PCS, PMA, PMD, and AUTONEG sub layers functions of IEEE standard.
  • 10Base-T and 100Base-TX IEEE 8802.3 compliant
  • Single 3.3V power supply
  • Highly configurable, supports:
  • – Media Independent Interface (MII)
    – Auto-Negotiation with Parallel detection
    – Node applications, managed or unmanaged
    – 10M or 100M full and half-duplex modes
    – Loopback mode for Diagnostic Functions
    – Auto-MDI/MDIX crossover correction
    Low-power CMOS (typically 400 mW)
  • Power-Down mode typically 21mW
  • Clock and crystal supported
  • 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 encoder
    Small footprint 48-pin 300 mil. SSOP package
  • Also available in small footprint 56-pin 8x8 MLF2 package
  • Available in Industrial Temp and Lead Free


製品名 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
Active SSOP 48 I はい Tube
Active SSOP 48 I はい Reel
Active VFQFPN 56 I はい Tray
Active VFQFPN 56 I はい Reel


タイトル language 分類 形式 サイズ 日付
1893BF/BK Datasheet データシート PDF 1 KB
PDN# : SP-20-03 End-of-Life (EOL) Process on Select Parts 製品中止通知 PDF 709 KB
PCN# : A1908-02 Adding SPEL India and Greatek Taiwan as Qualified Assembly Facilities 製品変更通知 PDF 157 KB
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility 製品変更通知 PDF 983 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages 製品変更通知 PDF 95 KB
PCN# : A1506-02 Gold wire to Copper wire 製品変更通知 PDF 35 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages 製品変更通知 PDF 50 KB
PCN# : A1504-04 Assembly Transfer from Amkor Philippines to OSE Taiwan 製品変更通知 PDF 484 KB
PDN# : CQ-15-01 (R1) Quarter PDN for Declined Market 製品中止通知 PDF 550 KB
PDN# : CQ-15-01 Quarter PDN for Declined Market 製品中止通知 PDF 547 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products 製品変更通知 PDF 361 KB