{"id":10477,"date":"2026-07-20T04:13:32","date_gmt":"2026-07-20T04:13:32","guid":{"rendered":"https:\/\/ic-vendor.com\/74hc02d\/"},"modified":"2026-07-20T04:13:32","modified_gmt":"2026-07-20T04:13:32","slug":"74hc02d","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/74hc02d\/","title":{"rendered":"74HC02D"},"content":{"rendered":"

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

The Nexperia 74HC02D is a quad 2-input NOR gate in an SO14 package. It operates from 2.0 V to 6.0 V, features CMOS low power dissipation with high noise immunity, and provides \u00b15.2 mA output drive. Ideal for combinational logic and digital control applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Supply Voltage (VCC)<\/td>\n2.0 V to 6.0 V<\/td>\n<\/tr>\n
\u903b\u8f91\u5bb6\u65cf<\/td>\n74HC (CMOS)<\/td>\n<\/tr>\n
Number of Gates<\/td>\n4 (Quad NOR)<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n11 ns (typical at 4.5V)<\/td>\n<\/tr>\n
Output Drive<\/td>\n\u00b15.2 mA<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
ESD Protection<\/td>\nHBM >2000V, CDM >1000V<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Wide supply voltage range from 2.0 V to 6.0 V<\/li>\n
  • CMOS low power dissipation with high noise immunity<\/li>\n
  • Input clamp diodes for interfacing to voltages above VCC<\/li>\n
  • Latch-up performance exceeds 100 mA per JESD 78<\/li>\n
  • Complies with JEDEC standards JESD8C and JESD7A<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Combinational logic in digital control systems<\/li>\n
    • Signal gating and control circuits<\/li>\n
    • Automotive logic applications<\/li>\n
    • Industrial automation logic<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Nexperia 74HC02D is a quad 2-input NOR gate in an SO14 package. It operates from 2.0 V to 6.0 V, features CMOS low power dissipation with high noise immunity, and provides \u00b15.2 mA output drive. Ideal for combinational logic and digital control applications. Key Specifications Supply Voltage (VCC) 2.0 V to 6.0 […]<\/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],"tags":[1782],"chip_brand":[168],"class_list":["post-10477","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-74hc02d","chip_brand-nxp"],"acf":{"brief_explanation":"Quad 2-input NOR gate, 2.0-6.0V, SO14, 11ns tpd, CMOS logic, \u00b15.2mA drive","date_code":"","package_case":"SO14 (SOT108-1) 8.65 x 3.9 x 1.75 mm","in_stock":10234,"datasheet":"https:\/\/assets.nexperia.com\/documents\/data-sheet\/74HC_HCT02.pdf","price":"$0.12 @ 1ku","product_introduction":"The Nexperia 74HC02D is a quad 2-input NOR gate integrated circuit manufactured using advanced silicon-gate CMOS technology. The device provides four independent NOR gates in a single SO14 package. It operates over a supply voltage range of 2.0V to 6.0V and features CMOS low power dissipation combined with high noise immunity. Input clamp diodes enable interfacing to voltages in excess of VCC using current limiting resistors. The device is fully specified from -40\u00b0C to +125\u00b0C and complies with JEDEC standards JESD8C and JESD7A. ESD protection exceeds 2000V HBM and 1000V CDM. Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.","working_principle":"The 74HC02D contains four independent 2-input NOR gates. Each gate performs the Boolean function Y = NOT (A OR B). The output is LOW when either or both inputs are HIGH; the output is HIGH only when both inputs are LOW. The CMOS input stage ensures low static power consumption with high input impedance. The output buffer provides \u00b15.2 mA drive capability, sufficient for driving multiple CMOS or TTL loads. Input clamp diodes protect the internal circuitry from voltage transients. The NOR gate is a fundamental logic building block, commonly used in combinational logic, flip-flop construction, and control signal generation.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>1Y<\/td>Output<\/td>NOR output for Gate 1<\/td><\/tr>\n
      2<\/td>1A<\/td>Input<\/td>Data input for Gate 1<\/td><\/tr>\n
      3<\/td>1B<\/td>Input<\/td>Data input for Gate 1<\/td><\/tr>\n
      4<\/td>2Y<\/td>Output<\/td>NOR output for Gate 2<\/td><\/tr>\n
      5<\/td>2A<\/td>Input<\/td>Data input for Gate 2<\/td><\/tr>\n
      6<\/td>2B<\/td>Input<\/td>Data input for Gate 2<\/td><\/tr>\n
      7<\/td>GND<\/td>Power<\/td>Ground (0 V)<\/td><\/tr>\n
      8<\/td>3A<\/td>Input<\/td>Data input for Gate 3<\/td><\/tr>\n
      9<\/td>3B<\/td>Input<\/td>Data input for Gate 3<\/td><\/tr>\n
      10<\/td>3Y<\/td>Output<\/td>NOR output for Gate 3<\/td><\/tr>\n
      11<\/td>4A<\/td>Input<\/td>Data input for Gate 4<\/td><\/tr>\n
      12<\/td>4B<\/td>Input<\/td>Data input for Gate 4<\/td><\/tr>\n
      13<\/td>4Y<\/td>Output<\/td>NOR output for Gate 4<\/td><\/tr>\n
      14<\/td>VCC<\/td>Power<\/td>Supply voltage<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Combinational logic in digital control systems<\/li>\n
      • Signal gating and enable control circuits<\/li>\n
      • Active LOW signal generation and decoding<\/li>\n
      • Automotive electronic logic modules<\/li>\n
      • Industrial automation safety interlock logic<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Texas Instruments<\/td>SN74HC02D<\/td>SOIC-14<\/td>Pin-to-pin compatible<\/td><\/tr>\n
        onsemi<\/td>MC74HC02ADR2G<\/td>SOIC-14<\/td>Equivalent function<\/td><\/tr>\n
        Toshiba<\/td>TC74HC02AP<\/td>DIP-14<\/td>Equivalent function<\/td><\/tr>\n
        Nexperia<\/td>74HCT02D<\/td>SO14<\/td>TTL input level variant<\/td><\/tr>\n
        STMicroelectronics<\/td>M74HC02RM13TR<\/td>SO-14<\/td>Pin-to-pin compatible<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10477"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10477\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10477"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}