{"id":3555,"date":"2026-06-06T10:25:56","date_gmt":"2026-06-06T10:25:56","guid":{"rendered":"https:\/\/materialparts.com\/txs0102dqer\/"},"modified":"2026-06-06T10:25:56","modified_gmt":"2026-06-06T10:25:56","slug":"txs0102dqer","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/txs0102dqer\/","title":{"rendered":"TXS0102DQER"},"content":{"rendered":"

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

The TXS0102DQER from Texas Instruments is a 2-bit bidirectional voltage-level translator with auto-direction sensing. Supporting data rates up to 24 Mbps (push-pull) and 2 Mbps (open-drain), it translates between 1.65V-3.6V (VCCA) and 2.3V-5.5V (VCCB) logic levels. The DQER suffix denotes the 8-pin VSSOP (US8) package rated for -40 to 85 C in tape-and-reel.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n2-bit Bidirectional Level Translator<\/td>\n<\/tr>\n
\u6e20\u9053<\/td>\n2<\/td>\n<\/tr>\n
Direction Sensing<\/td>\nAuto (no direction pin needed)<\/td>\n<\/tr>\n
VCCA Range<\/td>\n1.65V – 3.6V<\/td>\n<\/tr>\n
VCCB Range<\/td>\n2.3V – 5.5V<\/td>\n<\/tr>\n
Data Rate (Push-Pull)<\/td>\n24 Mbps<\/td>\n<\/tr>\n
Data Rate (Open-Drain)<\/td>\n2 Mbps<\/td>\n<\/tr>\n
ESD Protection<\/td>\n\u00b18 kV HBM on I\/O<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVSSOP-8 (US8, 2.3 x 2.0 mm)<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Auto-direction sensing eliminates direction control pins<\/li>\n
  • 2-bit bidirectional translation between 1.65V-3.6V and 2.3V-5.5V<\/li>\n
  • Supports both push-pull (24 Mbps) and open-drain (2 Mbps) signals<\/li>\n
  • Integrated 10 kOhm pull-up resistors for open-drain bus<\/li>\n
  • \u00b18 kV HBM ESD protection on I\/O pins<\/li>\n
  • Partial power-down: Ioff prevents back-current<\/li>\n
  • Low 1 uA quiescent current<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • I2C\/SMBus level translation between 1.8V and 5V domains<\/li>\n
    • SPI\/UART level shifting in mixed-voltage systems<\/li>\n
    • GPIO expansion across voltage domains<\/li>\n
    • SDIO interface level translation<\/li>\n
    • Multi-voltage MCU to peripheral interfacing<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TXS0102DQER from Texas Instruments is a 2-bit bidirectional voltage-level translator with auto-direction sensing. Supporting data rates up to 24 Mbps (push-pull) and 2 Mbps (open-drain), it translates between 1.65V-3.6V (VCCA) and 2.3V-5.5V (VCCB) logic levels. The DQER suffix denotes the 8-pin VSSOP (US8) package rated for -40 to 85 C in tape-and-reel. […]<\/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-3555","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"2-bit bidirectional level translator, auto-direction, 1.65-3.6V<->2.3-5.5V, VSSOP-8","date_code":"","package_case":"VSSOP-8 \/ US8 (2.30 x 2.00 x 0.90 mm)","in_stock":14834,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/txs0102.pdf","price":"$0.45 @ 1ku","product_introduction":"The TXS0102DQER from Texas Instruments is a 2-bit bidirectional voltage-level translator with automatic direction sensing that requires no direction-control pins. It translates between VCCA (1.65V-3.6V) and VCCB (2.3V-5.5V) logic domains, supporting push-pull signals at up to 24 Mbps and open-drain signals at up to 2 Mbps. Integrated 10 kOhm pull-up resistors facilitate open-drain bus connections such as I2C and SMBus. The Ioff circuit prevents damaging back-current when either supply is powered down, enabling use in hot-swap and partial-power-down applications.","working_principle":"The TXS0102DQER uses pass-transistor-based bidirectional translation. Each channel consists of an N-channel pass FET connecting the A-side and B-side I\/O, with integrated 10 kOhm pull-up resistors on both sides. When one side drives low, the pass FET conducts and pulls the other side low. When both sides are released, the pull-ups restore the lines to their respective VCC levels. One-shot accelerator circuits briefly strengthen the pull-down during edge transitions for faster rise\/fall times with open-drain signals. The auto-direction sensing is inherent: the pass FET conducts in both directions without needing to know which side is driving.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VCCA<\/td>Power<\/td>A-side supply (1.65-3.6V)<\/td><\/tr>
      2<\/td>A1<\/td>I\/O<\/td>A-side I\/O channel 1<\/td><\/tr>
      3<\/td>A2<\/td>I\/O<\/td>A-side I\/O channel 2<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      5<\/td>B2<\/td>I\/O<\/td>B-side I\/O channel 2<\/td><\/tr>
      6<\/td>B1<\/td>I\/O<\/td>B-side I\/O channel 1<\/td><\/tr>
      7<\/td>VCCB<\/td>Power<\/td>B-side supply (2.3-5.5V)<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr><\/table>","application_scenarios":"
      • I2C\/SMBus: Level translation between 1.8V\/2.5V\/3.3V MCU and 5V peripherals<\/li>
      • SPI\/UART: Bidirectional translation for mixed-voltage communication<\/li>
      • GPIO: Multi-voltage domain bridging in portable devices<\/li>
      • SDIO: Memory card interface level shifting<\/li>
      • Sensor interfaces: 1.8V sensor to 3.3V\/5V MCU translation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TXS0108EPWR<\/td>TSSOP-20<\/td>8-bit version, same architecture<\/td><\/tr>
        NXP<\/td>NTB0102GS<\/td>XSON-8<\/td>2-bit, auto-direction, similar specs<\/td><\/tr>
        TI<\/td>TXB0102DCUR<\/td>VSSOP-8<\/td>2-bit, edge-rate accelerated, 1.2-3.6V<->1.65-5.5V<\/td><\/tr>
        onsemi<\/td>NLSV2T244MUTAG<\/td>MicroPak-10<\/td>2-bit, direction pin, 8 Mbps<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3555","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=3555"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3555\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3555"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}