{"id":2146,"date":"2026-05-14T06:45:15","date_gmt":"2026-05-14T06:45:15","guid":{"rendered":"https:\/\/materialparts.com\/sn74lvc16t245dggr\/"},"modified":"2026-05-20T04:54:16","modified_gmt":"2026-05-20T04:54:16","slug":"sn74lvc16t245dggr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sn74lvc16t245dggr\/","title":{"rendered":"SN74LVC16T245DGGR"},"content":{"rendered":"

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

The SN74LVC16T245DGGR is a 16-bit dual-supply bus transceiver with configurable level-shifting and voltage translation from Texas Instruments. It features two independent 8-bit channels with separate direction and output-enable controls, supporting bidirectional translation between any combination of 1.65V to 5.5V voltage nodes. The device provides tri-state outputs, overvoltage-tolerant I\/O, and partial-power-down protection (Ioff), making it ideal for mixed-voltage system interfacing.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\n\u5fb7\u5dde\u4eea\u5668<\/td>\n<\/tr>\n
Logic Type<\/td>\nTranslation Transceiver<\/td>\n<\/tr>\n
Number of Bits<\/td>\n16 (2 x 8-bit)<\/td>\n<\/tr>\n
Voltage – VCCA<\/td>\n1.65V to 5.5V<\/td>\n<\/tr>\n
Voltage – VCCB<\/td>\n1.65V to 5.5V<\/td>\n<\/tr>\n
\u6570\u636e\u901f\u7387<\/td>\nUp to 200Mbps<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nTri-State, Non-Inverted<\/td>\n<\/tr>\n
Output Drive Current<\/td>\n\u00b132mA<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n4.3ns typical<\/td>\n<\/tr>\n
Channel Type<\/td>\nBidirectional<\/td>\n<\/tr>\n
Control Inputs<\/td>\n1DIR, 2DIR, 1OE, 2OE (referenced to VCCA)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n48-TSSOP (DGG), 6.1mm width<\/td>\n<\/tr>\n
\u9884\u7b97\u4ef7\u683c<\/td>\n$1.18 @ 1ku<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Fully configurable dual-rail design: each port operates 1.65V to 5.5V<\/li>\n
  • Universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5V nodes<\/li>\n
  • Overvoltage-tolerant inputs and outputs for mixed-voltage communication<\/li>\n
  • VCC isolation: both ports enter high-impedance if either VCC is at GND<\/li>\n
  • Ioff support for partial-power-down mode operation<\/li>\n
  • Control inputs referenced to VCCA for simplified system design<\/li>\n
  • Tri-state outputs for bus-oriented applications<\/li>\n
  • \u00b132mA output drive capability<\/li>\n
  • Latch-up performance exceeds 100mA per JESD 78, Class II<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Mixed-voltage microcontroller and processor interfacing<\/li>\n
    • Communication bus level translation (SPI, UART, GPIO)<\/li>\n
    • Backplane and system bus buffering<\/li>\n
    • Industrial automation and PLC I\/O modules<\/li>\n
    • Embedded systems with multiple voltage domains<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74LVC16T245DGGR is a 16-bit dual-supply bus transceiver with configurable level-shifting and voltage translation from Texas Instruments. It features two independent 8-bit channels with separate direction and output-enable controls, supporting bidirectional translation between any combination of 1.65V to 5.5V voltage nodes. The device provides tri-state outputs, overvoltage-tolerant I\/O, and partial-power-down protection (Ioff), making […]<\/p>\n","protected":false},"author":2,"featured_media":2175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,27],"tags":[],"chip_brand":[138],"class_list":["post-2146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-microprocessors-mpu","chip_brand-ti"],"acf":{"brief_explanation":"16-bit dual-supply bus transceiver, 1.65V-5.5V level shifting, bidirectional, tri-state, 200Mbps, 48-TSSOP","date_code":"","package_case":"48-TSSOP (DGG), 6.10mm width","in_stock":7800,"datasheet":"https:\/\/www.ti.com\/product\/SN74LVC16T245","price":"$1.18 @ 1ku","product_introduction":"The SN74LVC16T245DGGR is Texas Instruments' 16-bit dual-supply bus transceiver from the 74LVC family, designed for asynchronous communication between data buses operating at different voltage levels. The device features two independent 8-bit transceivers, each with separate direction (DIR) and output-enable (OE) control inputs referenced to VCCA. The A port tracks VCCA (1.65V to 5.5V) and the B port tracks VCCB (1.65V to 5.5V), enabling universal bidirectional translation between any combination of 1.8V, 2.5V, 3.3V, and 5V logic levels. The device supports data rates up to 200Mbps with typical propagation delay of 4.3ns. Overvoltage-tolerant I\/O allows safe connection to higher-voltage buses, while the Ioff feature and VCC isolation ensure safe operation during partial power-down conditions.","working_principle":"

      Dual-Supply Level Translation<\/h3>\n

      The SN74LVC16T245DGGR uses two independent power supply rails (VCCA and VCCB) to enable voltage-level translation between two different voltage domains. The A-port I\/O levels are referenced to VCCA and the B-port I\/O levels are referenced to VCCB. Each 8-bit transceiver can independently translate signals between the two voltage domains, controlled by DIR and OE pins supplied by VCCA.<\/p>\n\n

      Direction and Enable Control<\/h3>\n

      Each 8-bit section has separate DIR and OE controls. When OE is low and DIR is high, data flows from A to B. When OE is low and DIR is low, data flows from B to A. When OE is high, both A and B outputs enter the high-impedance state, isolating the device from the bus. This tri-state capability enables multiple devices to share a common bus.<\/p>\n\n

      Overvoltage Tolerance<\/h3>\n

      Both A and B port I\/O pins are overvoltage-tolerant, allowing them to be connected to voltage rails higher than their respective VCC supplies without causing latch-up or damage. This is essential in mixed-voltage systems where signal lines may originate from a different voltage domain.<\/p>\n\n

      Power-Down Protection<\/h3>\n

      The Ioff circuitry ensures that when either VCC rail is at GND, all I\/O pins enter a high-impedance state, preventing damaging backflow current. The VCC isolation feature further ensures that if either supply is absent, both ports remain in high-impedance, protecting upstream and downstream circuitry.<\/p>","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>1DIR<\/td>Input<\/td>Direction control for section 1 (referenced to VCCA)<\/td><\/tr>\n
      2<\/td>1OE<\/td>Input<\/td>Output enable for section 1 (active low, referenced to VCCA)<\/td><\/tr>\n
      3-10<\/td>1A1-1A8<\/td>I\/O<\/td>Section 1 A-port data lines<\/td><\/tr>\n
      11<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>\n
      12<\/td>VCCA<\/td>Power<\/td>A-port supply (1.65V to 5.5V)<\/td><\/tr>\n
      13-20<\/td>1B1-1B8<\/td>I\/O<\/td>Section 1 B-port data lines<\/td><\/tr>\n
      21-28<\/td>2B1-2B8<\/td>I\/O<\/td>Section 2 B-port data lines<\/td><\/tr>\n
      29<\/td>VCCB<\/td>Power<\/td>B-port supply (1.65V to 5.5V)<\/td><\/tr>\n
      30<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>\n
      31-38<\/td>2A1-2A8<\/td>I\/O<\/td>Section 2 A-port data lines<\/td><\/tr>\n
      39<\/td>2DIR<\/td>Input<\/td>Direction control for section 2 (referenced to VCCA)<\/td><\/tr>\n
      40<\/td>2OE<\/td>Input<\/td>Output enable for section 2 (active low, referenced to VCCA)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Mixed-voltage microcontroller and FPGA systems requiring bidirectional translation between 1.8V, 2.5V, 3.3V, and 5V domains<\/li>\n
      • SPI and UART communication interfaces between processors operating at different logic levels<\/li>\n
      • Industrial PLC and automation I\/O modules needing 16-bit bus buffering with tri-state control<\/li>\n
      • Backplane and system bus transceivers where multiple voltage domains must communicate reliably<\/li>\n
      • Portable electronics with dynamic voltage scaling requiring fast 200Mbps level translation<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        TI<\/td>SN74LVC8T245DGVR<\/td>48-TVSOP<\/td>8-bit version, same family, lower pin count alternative<\/td><\/tr>\n
        TI<\/td>SN74LVC4245ADWR<\/td>SOIC-24<\/td>8-bit 3.3V to 5V translator, fixed voltage<\/td><\/tr>\n
        TI<\/td>SN74AXCH4T245PWR<\/td>TSSOP-16<\/td>4-bit, 0.65V to 3.6V, auto-direction sensing<\/td><\/tr>\n
        NXP<\/td>74LVC16T245DGG<\/td>TSSOP-48<\/td>Pin-compatible alternative<\/td><\/tr>\n
        TI<\/td>TXB0108PWR<\/td>TSSOP-20<\/td>8-bit auto-direction translator, no DIR\/OE needed<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2146","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=2146"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2146\/revisions"}],"predecessor-version":[{"id":2452,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2146\/revisions\/2452"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2175"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2146"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}