{"id":5276,"date":"2026-06-09T10:38:41","date_gmt":"2026-06-09T10:38:41","guid":{"rendered":"https:\/\/materialparts.com\/pca9306dcur\/"},"modified":"2026-06-09T10:38:41","modified_gmt":"2026-06-09T10:38:41","slug":"pca9306dcur","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pca9306dcur\/","title":{"rendered":"PCA9306DCUR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

PCA9306DCUR from TI is a dual bidirectional I2C\/SMBus voltage-level translator. 1.0-5V on each side. Open-drain pass-gate. VSSOP-8.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

Pass-gate MOSFETs connect SDA\/SCL between two voltage domains. Each side has independent pull-up to its VDD. Translation is bidirectional and automatic. Supports 1.0-5.0V on either side.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\nVREF1<\/td>\nSide 1 reference<\/td>\n<\/tr>\n
2-3<\/td>\nSCL1\/SDA1<\/td>\nSide 1 bus<\/td>\n<\/tr>\n
4<\/td>\n\u63a5\u5730<\/td>\n\u5730\u9762<\/td>\n<\/tr>\n
5-6<\/td>\nSDA2\/SCL2<\/td>\nSide 2 bus<\/td>\n<\/tr>\n
7<\/td>\nVREF2<\/td>\nSide 2 reference<\/td>\n<\/tr>\n
8<\/td>\nEN<\/td>\nEnable<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • I2C level shifting<\/li>\n
  • Mixed-voltage I2C buses<\/li>\n
  • Sensor\/MCU voltage bridging<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n
    \u5236\u9020\u5546<\/th>\n\u90e8\u4ef6\u7f16\u53f7<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    TI<\/td>\nTXS0108EPWR<\/td>\n8-ch translator<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview PCA9306DCUR from TI is a dual bidirectional I2C\/SMBus voltage-level translator. 1.0-5V on each side. Open-drain pass-gate. VSSOP-8. Working Principle Pass-gate MOSFETs connect SDA\/SCL between two voltage domains. Each side has independent pull-up to its VDD. Translation is bidirectional and automatic. Supports 1.0-5.0V on either side. Pin Description Pin Name Function 1 VREF1 Side […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-5276","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"I2C voltage-level translator, 1-5V, VSSOP-8","date_code":"","package_case":"VSSOP-8 (3.0 x 3.0 x 0.9mm)","in_stock":6510,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/pca9306.pdf","price":"$0.60 @ 1ku","product_introduction":"PCA9306DCUR from TI is a dual bidirectional I2C\/SMBus voltage-level translator. 1.0-5V on each side. Open-drain pass-gate. VSSOP-8.","working_principle":"Pass-gate MOSFETs connect SDA\/SCL between two voltage domains. Each side has independent pull-up to its VDD. Translation is bidirectional and automatic. Supports 1.0-5.0V on either side.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>VREF1<\/td>Side 1 reference<\/td><\/tr>
    2-3<\/td>SCL1\/SDA1<\/td>Side 1 bus<\/td><\/tr>
    4<\/td>GND<\/td>Ground<\/td><\/tr>
    5-6<\/td>SDA2\/SCL2<\/td>Side 2 bus<\/td><\/tr>
    7<\/td>VREF2<\/td>Side 2 reference<\/td><\/tr>
    8<\/td>EN<\/td>Enable<\/td><\/tr><\/table>","application_scenarios":"
    • I2C level shifting<\/li>
    • Mixed-voltage I2C buses<\/li>
    • Sensor\/MCU voltage bridging<\/li><\/ul>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
      TI<\/td>TXS0108EPWR<\/td>8-ch translator<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5276"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5276\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5276"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}