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1894KI-40LF - Renesas Electronics

Description: The IDT1894-40 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 IDT1894-40 is intended for MII, Node applications that require the Auto-MDIX feature that automatically corrects crossover errors in plant wiring. The IDT1894-40 incorporates Digital-Signal Processing (DSP) control in its Physical-Medium Dependent (PMD) sub layer. As a result, it can transmit and recei

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1894KI-40LF - Renesas Electronics - PCB symbol
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PCB Footprints
1894KI-40LF - Renesas Electronics PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 40-pin 6mm x 6mm QFN-ren1
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1894KI-40LF - Renesas Electronics - 3D model - Quad Flat No-Lead - 40-pin 6mm x 6mm QFN-ren1
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1894KI-40LF Details

  • Manufacturer Part Number:

    1894KI-40LF

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    VFQFPN

  • Package Description:

    QFN-40

  • Pin Count:

    40

  • Manufacturer Package Code:

    NLG40P1

  • Country Of Origin:

    Taiwan

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Factory Lead Time:

    12 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    6

  • Data Rate:

    100000 Mbps

  • JESD-30 Code:

    S-XQCC-N40

  • JESD-609 Code:

    e3

  • Length:

    6 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    40

  • Number of Transceivers:

    1

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC40,.24SQ,20

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Screening Level:

    IEEE 802.3; IEEE 802.3u

  • Seated Height-Max:

    1 mm

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Telecom IC Type:

    ETHERNET TRANSCEIVER

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    6 mm

1894KI-40LF Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (R01AN2732EU0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement, to ensure optimal thermal performance.
  • Renesas recommends using an external overcurrent protection circuit, such as a fuse or a dedicated overcurrent protection IC, to prevent damage to the device. The datasheet provides guidelines for selecting the appropriate overcurrent protection component.
  • While the datasheet specifies a recommended operating voltage range of 4.5V to 5.5V, Renesas recommends operating the device within a narrower range of 4.75V to 5.25V for optimal performance and reliability.
  • Renesas provides EMC design guidelines in their application note (R01AN2732EU0100) which include recommendations for PCB layout, component selection, and shielding to minimize electromagnetic interference (EMI) and ensure EMC compliance.
  • While the datasheet specifies a maximum junction temperature (Tj) of 150°C, Renesas recommends derating the device's power dissipation to ensure a maximum Tj of 125°C for optimal reliability and lifespan.

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1894KI-40LF Overview

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