{"id":5523,"date":"2026-06-10T04:22:00","date_gmt":"2026-06-10T04:22:00","guid":{"rendered":"https:\/\/materialparts.com\/74ac245mtcx\/"},"modified":"2026-06-10T04:22:00","modified_gmt":"2026-06-10T04:22:00","slug":"74ac245mtcx","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/74ac245mtcx\/","title":{"rendered":"74AC245MTCX"},"content":{"rendered":"

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

The 74AC245MTCX from onsemi is an octal bus transceiver with 3-state outputs in a 20-pin TSSOP package. The AC family provides high-speed CMOS performance with 6.5ns propagation delay at 5V. With direction control (DIR) and output enable (OE), it buffers bidirectional data buses in microprocessor and backplane systems.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u529f\u80fd<\/td>\nOctal bus transceiver<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\n3-state (non-inverting)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2V to 6V<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n6.5ns typical @ 5V<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-24mA @ 5V<\/td>\n<\/tr>\n
Direction Control<\/td>\nDIR pin (A->B or B->A)<\/td>\n<\/tr>\n
Output Enable<\/td>\nOE pin (active low)<\/td>\n<\/tr>\n
Iq<\/td>\n80uA max @ 5.5V<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTSSOP-20<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AC-family high-speed CMOS (6.5ns @ 5V)<\/li>\n
  • +\/-24mA high output drive<\/li>\n
  • Bidirectional transceiver with DIR control<\/li>\n
  • 3-state outputs for bus sharing<\/li>\n
  • 2V to 6V wide supply range<\/li>\n
  • Non-inverting data path<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Microprocessor bus buffering<\/li>\n
    • Backplane data transceivers<\/li>\n
    • Memory interface drivers<\/li>\n
    • Bidirectional data bus isolation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 74AC245MTCX from onsemi is an octal bus transceiver with 3-state outputs in a 20-pin TSSOP package. The AC family provides high-speed CMOS performance with 6.5ns propagation delay at 5V. With direction control (DIR) and output enable (OE), it buffers bidirectional data buses in microprocessor and backplane systems. Key Specifications Function Octal bus […]<\/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],"tags":[],"chip_brand":[],"class_list":["post-5523","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics"],"acf":{"brief_explanation":"Octal bus transceiver, 3-state, TSSOP-20","date_code":"","package_case":"TSSOP-20 (6.5 x 4.4 mm)","in_stock":12497,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MC74AC245-D.PDF","price":"$0.35 @ 1ku","product_introduction":"The 74AC245MTCX from onsemi is an octal bus transceiver with 3-state outputs in a 20-pin TSSOP package. The AC family provides high-speed CMOS performance with 6.5ns propagation delay at 5V. With direction control (DIR) and output enable (OE), it buffers bidirectional data buses in microprocessor and backplane systems.","working_principle":"The 74AC245MTCX operates as described in the product overview. Key subsystems include the input stage, processing\/gain stage, output stage, and protection circuitry as detailed in the datasheet.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>DIR<\/td>Input<\/td>Direction (A-to-B or B-to-A)<\/td><\/tr>
      2-9<\/td>A1-A8<\/td>I\/O<\/td>A-side bus<\/td><\/tr>
      10<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      11-18<\/td>B8-B1<\/td>I\/O<\/td>B-side bus<\/td><\/tr>
      19<\/td>OE<\/td>Input<\/td>Output enable (active low)<\/td><\/tr>
      20<\/td>VCC<\/td>Power<\/td>Supply (2-6V)<\/td><\/tr><\/table>","application_scenarios":"
      • Microprocessor bus buffering<\/li>
      • Backplane data transceivers<\/li>
      • Memory interface drivers<\/li>
      • Bidirectional data bus isolation<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Package<\/th>Notes<\/th><\/tr>
        SN74AC245PW<\/td>TI<\/td>TSSOP-20<\/td>Pin-compatible<\/td><\/tr>
        74HC245D<\/td>Nexperia<\/td>SOIC-20<\/td>HC family, slower<\/td><\/tr>
        74LVC245PW<\/td>Nexperia<\/td>TSSOP-20<\/td>1.65-3.6V LVC<\/td><\/tr>
        MC74VHC245DTR2G<\/td>onsemi<\/td>TSSOP-20<\/td>VHC family<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5523","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=5523"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5523\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5523"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}