{"id":10373,"date":"2026-07-19T12:47:40","date_gmt":"2026-07-19T12:47:40","guid":{"rendered":"https:\/\/materialparts.com\/lan8742a-cz-tr\/"},"modified":"2026-07-19T12:47:40","modified_gmt":"2026-07-19T12:47:40","slug":"lan8742a-cz-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lan8742a-cz-tr\/","title":{"rendered":"LAN8742A-CZ-TR"},"content":{"rendered":"

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The LAN8742A-CZ-TR is a low-power 10\/100 Ethernet PHY transceiver from Microchip (formerly SMSC) with RMII MAC interface, HP Auto-MDIX, Wake-on-LAN, and cable diagnostics. The commercial-grade (0-70\u00b0C) variant in 24-pin SQFN (4x4mm) tape-and-reel packaging is designed for cost-sensitive embedded Ethernet applications.<\/p>\n

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Device Type<\/td>\n10\/100 Ethernet PHY Transceiver<\/td>\n<\/tr>\n
Line Speed<\/td>\n10\/100Mbps<\/td>\n<\/tr>\n
MAC Interface<\/td>\nRMII (Reduced MII)<\/td>\n<\/tr>\n
Auto-MDIX<\/td>\nHP Auto-MDIX (crossover elimination)<\/td>\n<\/tr>\n
Wake-on-LAN<\/td>\nYes (WoL)<\/td>\n<\/tr>\n
Cable Diagnostics<\/td>\nYes (LinkMD)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3.3V (with 1.2V internal regulator)<\/td>\n<\/tr>\n
I\/O Voltage<\/td>\n+1.6V to +3.6V (variable)<\/td>\n<\/tr>\n
Crystal<\/td>\n25MHz (external)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n24-SQFN (4x4mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • RMII interface \u2014 reduced pin count (12 signals vs. MII’s 18)<\/li>\n
  • HP Auto-MDIX \u2014 works with straight or crossover cables<\/li>\n
  • flexPWR \u2014 variable I\/O voltage (1.6V to 3.6V)<\/li>\n
  • Integrated 1.2V regulator with disable<\/li>\n
  • Wake-on-LAN for system power management<\/li>\n
  • Deterministic loopback latency<\/li>\n
  • LinkMD cable diagnostics<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Set-top boxes and DVRs<\/li>\n
    • Printers and multifunction devices<\/li>\n
    • IP cameras and video phones<\/li>\n
    • Industrial embedded Ethernet<\/li>\n
    • Wireless access points and PoE devices<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LAN8742A-CZ-TR is a low-power 10\/100 Ethernet PHY transceiver from Microchip (formerly SMSC) with RMII MAC interface, HP Auto-MDIX, Wake-on-LAN, and cable diagnostics. The commercial-grade (0-70\u00b0C) variant in 24-pin SQFN (4x4mm) tape-and-reel packaging is designed for cost-sensitive embedded Ethernet applications. Key Specifications Device Type 10\/100 Ethernet PHY Transceiver Line Speed 10\/100Mbps MAC Interface […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[1649,1674,1675],"chip_brand":[134],"class_list":["post-10373","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-ethernet-phy","tag-lan8742a-cz-tr","tag-rmii","chip_brand-microchip"],"acf":{"brief_explanation":"10\/100 Ethernet PHY, RMII, HP Auto-MDIX, WoL, 3.3V, 24-SQFN(4x4), 0~70\u00b0C","date_code":"","package_case":"24-SQFN (4x4mm, 0.5mm pitch, 0.9mm height)","in_stock":8900,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/LAN8742A","price":"","product_introduction":"The LAN8742A-CZ-TR is a 10\/100 Ethernet PHY transceiver from Microchip with RMII MAC interface, designed for cost-sensitive embedded applications. It supports 10BASE-T and 100BASE-TX with HP Auto-MDIX for automatic crossover cable detection, Wake-on-LAN for system power management, and LinkMD cable diagnostics. The flexPWR architecture supports variable I\/O voltages from 1.6V to 3.6V, and the integrated 1.2V regulator can be disabled for external supply operation. The commercial-grade (0-70\u00b0C) device ships in tape-and-reel in a compact 24-pin SQFN (4x4mm) package.","working_principle":"The LAN8742A implements the 10BASE-T and 100BASE-TX physical layers. For 100BASE-TX, it performs 4B5B encoding\/decoding, MLT-3 line coding, and digital adaptive equalization with echo cancellation. For 10BASE-T, it uses Manchester encoding. The RMII interface transfers data to the MAC using 2-bit wide TXD\/RXD buses at 50MHz (100Mbps) or 5MHz (10Mbps) reference clock. Auto-negotiation determines the best speed\/duplex with the link partner. HP Auto-MDIX automatically detects and corrects MDI\/MDI-X crossover, eliminating the need for specific cable types. Wake-on-LAN monitors for magic packets or specific frames and asserts an interrupt to wake the system.","pin_description":"
      Interface<\/th>Pins<\/th>Function<\/th><\/tr>
      RMII<\/td>TXD[1:0], RXD[1:0], TX_EN, CRS_DV, REF_CLK<\/td>MAC data interface<\/td><\/tr>
      MDIO\/MDC<\/td>2 pins<\/td>Management interface<\/td><\/tr>
      Line Side<\/td>TXP\/TXN, RXP\/RXN<\/td>4 twisted-pair signals<\/td><\/tr>
      Crystal<\/td>XTAL1\/XTAL2<\/td>25MHz reference<\/td><\/tr>
      LED<\/td>2 pins<\/td>Link\/Activity indicators<\/td><\/tr><\/table>","application_scenarios":"
      • Set-top box and DVR Ethernet port<\/li>
      • Network printer and MFP LAN interface<\/li>
      • IP camera and video phone 10\/100 link<\/li>
      • Industrial embedded Ethernet module<\/li>
      • Wireless AP and PoE powered device<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Speed<\/th>Notes<\/th><\/tr>
        Microchip<\/td>LAN8720A-CZ-TR<\/td>10\/100<\/td>Smaller package, no WoL<\/td><\/tr>
        Microchip<\/td>LAN8742AI-CZ-TR<\/td>10\/100<\/td>Industrial temp (-40~85\u00b0C)<\/td><\/tr>
        Realtek<\/td>RTL8201F-CG<\/td>10\/100<\/td>RMII PHY, lower cost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/10373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=10373"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/10373\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=10373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=10373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=10373"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10373"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}