{"id":9943,"date":"2026-07-08T01:19:15","date_gmt":"2026-07-08T01:19:15","guid":{"rendered":"https:\/\/materialparts.com\/sn74lvc2t45dcur\/"},"modified":"2026-07-08T01:19:15","modified_gmt":"2026-07-08T01:19:15","slug":"sn74lvc2t45dcur","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/sn74lvc2t45dcur\/","title":{"rendered":"SN74LVC2T45DCUR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The Texas Instruments SN74LVC2T45DCUR is a 2-bit dual-supply voltage level translator in an 8-pin VSSOP (DCU) package. It translates signals between two voltage rails (VCCA: 1.65-5.5V, VCCB: 1.65-5.5V) with independent direction control per bit. The device supports data rates up to 100Mbps and features Ioff for partial power-down.<\/p>\n

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Logic Type<\/td>\nDual-Supply Voltage Translator<\/td>\n<\/tr>\n
Number of Bits<\/td>\n2<\/td>\n<\/tr>\n
VCCA Range<\/td>\n1.65V to 5.5V<\/td>\n<\/tr>\n
VCCB Range<\/td>\n1.65V to 5.5V<\/td>\n<\/tr>\n
Max Data Rate<\/td>\n100Mbps<\/td>\n<\/tr>\n
Direction Control<\/td>\nPer-bit (DIR pin)<\/td>\n<\/tr>\n
Output Drive<\/td>\n\u00b124mA<\/td>\n<\/tr>\n
Ioff<\/td>\nYes<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVSSOP-8 (DCU)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • 2-bit bidirectional voltage translation<\/li>\n
  • Dual supply rails: 1.65V to 5.5V each<\/li>\n
  • Up to 100Mbps data rate<\/li>\n
  • Independent direction control<\/li>\n
  • Overvoltage-tolerant I\/O<\/li>\n
  • Ioff for partial power-down<\/li>\n
  • Low quiescent current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • I2C\/SPI voltage level translation<\/li>\n
    • Mixed-voltage system interfacing<\/li>\n
    • MCU-to-peripheral voltage bridging<\/li>\n
    • FPGA I\/O bank level shifting<\/li>\n
    • \u0623\u062c\u0647\u0632\u0629 \u0645\u062d\u0645\u0648\u0644\u0629 \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u0628\u0637\u0627\u0631\u064a\u0629<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Texas Instruments SN74LVC2T45DCUR is a 2-bit dual-supply voltage level translator in an 8-pin VSSOP (DCU) package. It translates signals between two voltage rails (VCCA: 1.65-5.5V, VCCB: 1.65-5.5V) with independent direction control per bit. The device supports data rates up to 100Mbps and features Ioff for partial power-down. Key Specifications Logic Type Dual-Supply […]<\/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],"tags":[1240],"chip_brand":[138],"class_list":["post-9943","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-sn74lvc2t45dcur","chip_brand-ti"],"acf":{"brief_explanation":"2-bit dual-supply level translator, 1.65-5.5V, 100Mbps, VSSOP-8, TI LVC translator","date_code":"","package_case":"VSSOP-8 (DCU, 3.0 x 2.0 x 0.9mm)","in_stock":2965,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74lvc2t45.pdf","price":"$0.45 @ 1ku","product_introduction":"The TI SN74LVC2T45DCUR is a 2-bit dual-supply voltage level translator in VSSOP-8 package, supporting independent voltage rails from 1.65V to 5.5V on each side. With data rates up to 100Mbps and per-bit direction control, it is ideal for I2C, SPI, and other bidirectional bus level translation between different voltage domains in mixed-voltage systems.","working_principle":"The SN74LVC2T45DCUR uses two separate supply rails (VCCA and VCCB) to translate logic levels between two voltage domains. The DIR pin controls the direction of data flow: when DIR is high, data flows from A to B; when low, from B to A. The A-port I\/Os are referenced to VCCA and the B-port I\/Os to VCCB. Each bit independently follows the direction control. The Ioff circuitry ensures both ports are in high-impedance state when either supply is 0V.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>DIR<\/td>Input<\/td>Direction control (A\u2192B or B\u2192A)<\/td><\/tr>
      2<\/td>A1<\/td>I\/O<\/td>A-port data bit 1 (referenced to VCCA)<\/td><\/tr>
      3<\/td>A2<\/td>I\/O<\/td>A-port data bit 2 (referenced to VCCA)<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>B2<\/td>I\/O<\/td>B-port data bit 2 (referenced to VCCB)<\/td><\/tr>
      6<\/td>B1<\/td>I\/O<\/td>B-port data bit 1 (referenced to VCCB)<\/td><\/tr>
      7<\/td>VCCB<\/td>Power<\/td>B-side supply (1.65-5.5V)<\/td><\/tr>
      8<\/td>VCCA<\/td>Power<\/td>A-side supply (1.65-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • I2C\/SPI bus level translation between 1.8V and 3.3V domains<\/li>
      • MCU to sensor peripheral voltage bridging<\/li>
      • FPGA I\/O bank level shifting<\/li>
      • Mixed-voltage IoT device interfacing<\/li>
      • Portable device multi-rail communication<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74LVC8T245DWR<\/td>TSSOP-24<\/td>8-bit version<\/td><\/tr>
        NXP<\/td>74LVC2T45DP<\/td>TSSOP-8<\/td>Equivalent function<\/td><\/tr>
        TI<\/td>TXB0102DCUR<\/td>VSSOP-8<\/td>Auto-direction sensing<\/td><\/tr>
        TI<\/td>SN74AVC2T45RSWR<\/td>UQFN-8<\/td>Lower voltage, smaller package<\/td><\/tr>
        onsemi<\/td>NLSV2T244DTR2G<\/td>VSSOP-8<\/td>Equivalent translator<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9943","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=9943"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9943\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9943"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9943"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}