{"id":9011,"date":"2026-07-02T02:51:01","date_gmt":"2026-07-02T02:51:01","guid":{"rendered":"https:\/\/materialparts.com\/txb0108rgyr\/"},"modified":"2026-07-03T08:02:48","modified_gmt":"2026-07-03T08:02:48","slug":"txb0108rgyr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/txb0108rgyr\/","title":{"rendered":"TXB0108RGYR"},"content":{"rendered":"

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

The TXB0108RGYR is a Texas Instruments 8-bit bidirectional voltage-level translator with auto-direction sensing, 1.2V-3.6V A-port, 1.65V-5.5V B-port, +\/-15kV ESD, 4ns propagation delay, and 4uA max supply current. Packaged in VQFN-20 (4.5×3.5mm), -40C to +85C.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n
Bits<\/td>\n8<\/td>\n<\/tr>\n
A Port (VCCA)<\/td>\n1.2 V to 3.6 V<\/td>\n<\/tr>\n
B Port (VCCB)<\/td>\n1.65 \u0641\u0648\u0644\u062a \u0625\u0644\u0649 5.5 \u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n100 Mbps max<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n4 ns typ<\/td>\n<\/tr>\n
Supply Current<\/td>\n4 uA max<\/td>\n<\/tr>\n
ESD (B Port)<\/td>\n+\/-15 kV HBM<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVQFN-20 (4.5 x 3.5 mm)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 8-bit bidirectional voltage translation<\/li>\n
  • Auto-direction sensing (no direction control needed)<\/li>\n
  • A port: 1.2V to 3.6V; B port: 1.65V to 5.5V<\/li>\n
  • +\/-15kV HBM ESD on B port<\/li>\n
  • VCC isolation (outputs Hi-Z if either supply is GND)<\/li>\n
  • Ioff support for partial-power-down<\/li>\n
  • 4uA max supply current<\/li>\n
  • OE input referenced to VCCA<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • GPIO, SPI, UART, I2S level shifting<\/li>\n
    • Smartphone and tablet interface bridging<\/li>\n
    • JTAG and PCM signal translation<\/li>\n
    • Processor-to-peripheral voltage bridging<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TXB0108RGYR is a Texas Instruments 8-bit bidirectional voltage-level translator with auto-direction sensing, 1.2V-3.6V A-port, 1.65V-5.5V B-port, +\/-15kV ESD, 4ns propagation delay, and 4uA max supply current. Packaged in VQFN-20 (4.5×3.5mm), -40C to +85C. Key Specifications Bits 8 A Port (VCCA) 1.2 V to 3.6 V B Port (VCCB) 1.65 V to 5.5 […]<\/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":[640],"chip_brand":[138],"class_list":["post-9011","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-txb0108rgyr","chip_brand-ti"],"acf":{"brief_explanation":"8-bit bidirectional level translator, auto-dir, 1.2-5.5V, VQFN-20","date_code":"","package_case":"20-Pin VQFN (4.5 x 3.5 x 0.8 mm)","in_stock":6304,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/txb0108.pdf","price":"$0.70 @ 1ku","product_introduction":"The TXB0108RGYR is a Texas Instruments 8-bit bidirectional voltage-level translator in a 20-pin VQFN package with auto-direction sensing. The device uses two separate configurable power-supply rails: the A port tracks VCCA (1.2V to 3.6V) and the B port tracks VCCB (1.65V to 5.5V), with VCCA not exceeding VCCB. This enables universal low-voltage bidirectional translation between any combination of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes without requiring a direction control signal. The auto-direction sensing circuit detects which port is being driven and enables the opposite port output accordingly, making the device ideal for bidirectional buses like SPI, I2C, and UART. The +\/-15kV HBM ESD protection on the B port provides robustness for connectors and cables. The VCC isolation feature places all outputs in high-impedance when either supply is at GND, and the Ioff circuitry prevents damaging backflow current during partial-power-down.","working_principle":"The TXB0108RGYR uses an auto-direction sensing architecture based on edge-rate accelerators and one-shot circuits. Each I\/O cell monitors its pin voltage. When a driving device pulls a pin on one port, the edge-rate accelerator detects the transition and briefly turns on the opposite port output driver to assist the transition, after which the one-shot times out and the output returns to a high-impedance state. The external pull-up or pull-down resistors then maintain the steady-state logic level. The A-port I\/O cells are referenced to VCCA and the B-port I\/O cells to VCCB, with internal level-shifting between the two voltage domains. The OE pin (active high, referenced to VCCA) enables all outputs when high, and places all outputs in high-impedance when low.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>A1<\/td>I\/O 1 (A port)<\/td><\/tr>
      2<\/td>VCCA<\/td>A-port supply (1.2-3.6V)<\/td><\/tr>
      3-9<\/td>A2-A8<\/td>I\/O 2-8 (A port)<\/td><\/tr>
      10<\/td>OE<\/td>Output enable (active high)<\/td><\/tr>
      11<\/td>GND<\/td>Ground<\/td><\/tr>
      12-18<\/td>B8-B2<\/td>I\/O 8-2 (B port)<\/td><\/tr>
      19<\/td>VCCB<\/td>B-port supply (1.65-5.5V)<\/td><\/tr>
      20<\/td>B1<\/td>I\/O 1 (B port)<\/td><\/tr><\/table>","application_scenarios":"
      • 1.8V MCU SPI bus to 3.3V peripheral level shifting with auto-direction for MISO line<\/li>
      • 2.5V FPGA to 5V legacy peripheral GPIO expansion with +\/-15kV ESD on connector side<\/li>
      • 1.2V processor to 3.3V JTAG debug interface with VCC isolation for hot-plug<\/li>
      • Smartphone AP to modem UART bridging at 4uA IQ for battery life<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        TXB0108PWR<\/td>TI<\/td>TSSOP-20, wider package<\/td><\/tr>
        TXB0108DQS<\/td>TI<\/td>SON-20, smaller 2x4mm<\/td><\/tr>
        SN74LVC8T245PWR<\/td>TI<\/td>Direction-controlled, 8-bit<\/td><\/tr>
        74LVC4245APW<\/td>Nexperia<\/td>Direction-controlled, 8-bit<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9011","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=9011"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9011\/revisions"}],"predecessor-version":[{"id":9038,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9011\/revisions\/9038"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9011"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9011"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9011"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9011"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}