{"id":3093,"date":"2026-05-30T02:46:18","date_gmt":"2026-05-30T02:46:18","guid":{"rendered":"https:\/\/materialparts.com\/sn74hc165dr\/"},"modified":"2026-05-30T02:46:18","modified_gmt":"2026-05-30T02:46:18","slug":"sn74hc165dr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sn74hc165dr\/","title":{"rendered":"SN74HC165DR"},"content":{"rendered":"

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

The SN74HC165DR is an 8-bit parallel-load shift register from Texas Instruments. When clocked, it shifts data toward a serial QH output. It features eight direct data inputs enabled by a low level at the shift\/load input, a clock-inhibit function, and a complementary serial QH output, housed in a 16-pin SOIC package with wide -40C to +125C temperature range.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Bits<\/td>\n8<\/td>\n<\/tr>\n
\u914d\u7f6e<\/td>\nParallel-in, Serial-out<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2V to 6V<\/td>\n<\/tr>\n
Clock Frequency<\/td>\n24 MHz (HC at 5V)<\/td>\n<\/tr>\n
Typical tpd<\/td>\n13 ns<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-5.2 mA at 5V<\/td>\n<\/tr>\n
ICC (Max)<\/td>\n80 uA<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-16 (9.9 x 6.0 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Wide operating voltage range: 2V to 6V<\/li>\n
  • Complementary serial outputs (QH and QH)<\/li>\n
  • Direct overriding load (data) inputs<\/li>\n
  • Gated clock inputs with clock-inhibit function<\/li>\n
  • Low power consumption: 80 uA max ICC<\/li>\n
  • Drives up to 10 LSTTL loads<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Expanding microcontroller input pins<\/li>\n
    • Parallel-to-serial data conversion<\/li>\n
    • Keyboard and switch matrix scanning<\/li>\n
    • Digital input expansion modules<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74HC165DR is an 8-bit parallel-load shift register from Texas Instruments. When clocked, it shifts data toward a serial QH output. It features eight direct data inputs enabled by a low level at the shift\/load input, a clock-inhibit function, and a complementary serial QH output, housed in a 16-pin SOIC package with wide […]<\/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":[138],"class_list":["post-3093","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"8-bit parallel-load shift register, PISO, 2-6V, 24 MHz, SOIC-16","date_code":"","package_case":"SOIC-16 (9.9 x 6.0 mm)","in_stock":4837,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc165.pdf","price":"$0.134 @ 1ku","product_introduction":"The SN74HC165DR from Texas Instruments is an 8-bit parallel-load shift register designed for parallel-to-serial data conversion. Eight individual direct data (A-H) inputs are enabled by a low level at the shift\/load (SH\/LD) input, allowing asynchronous parallel data loading. When SH\/LD is held high, data shifts toward the serial QH output on each rising clock edge. The device features a clock-inhibit (CLK INH) function and a complementary QH output, providing flexible interfacing options. With a wide operating voltage range of 2V to 6V and high noise immunity, it is ideal for expanding digital inputs in microcontroller-based systems.","working_principle":"The SN74HC165DR operates in two modes. When SH\/LD is low, the eight parallel data inputs (A-H) are asynchronously loaded into the internal register, overriding any shift operation. When SH\/LD is high and CLK INH is low, each rising edge of the CLK input shifts the register data one position toward the QH output, with the SER input filling the vacated position. The clock-inhibit (CLK INH) pin can prevent shifting when held high, and its function is interchangeable with CLK. The complementary QH output provides the inverse of the QH serial output. Multiple devices can be cascaded by connecting QH to the SER input of the next stage.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SH\/LD<\/td>Input<\/td>Shift\/Load control (low=load, high=shift)<\/td><\/tr>
      2<\/td>CLK<\/td>Input<\/td>Clock input (rising edge triggered)<\/td><\/tr>
      3-6<\/td>E,F,G,H<\/td>Input<\/td>Parallel data inputs E-H<\/td><\/tr>
      7<\/td>QH<\/td>Output<\/td>Inverted serial output<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td>Ground reference<\/td><\/tr>
      9<\/td>QH<\/td>Output<\/td>Serial output<\/td><\/tr>
      10<\/td>SER<\/td>Input<\/td>Serial data input (for cascading)<\/td><\/tr>
      11-14<\/td>A,B,C,D<\/td>Input<\/td>Parallel data inputs A-D<\/td><\/tr>
      15<\/td>CLK INH<\/td>Input<\/td>Clock inhibit (active high)<\/td><\/tr>
      16<\/td>VCC<\/td>Power<\/td>Supply voltage 2-6V<\/td><\/tr><\/table>","application_scenarios":"
      • Expanding microcontroller digital input capability<\/li>\n
      • Parallel-to-serial data conversion for communication<\/li>\n
      • Keyboard, switch matrix, and DIP switch scanning<\/li>\n
      • Cascaded input expansion for PLC and industrial I\/O modules<\/li>\n
      • LED display data serialization<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74HC165N<\/td>PDIP-16<\/td>Through-hole version<\/td><\/tr>
        TI<\/td>SN74HC165PWR<\/td>TSSOP-16<\/td>Smaller TSSOP package<\/td><\/tr>
        TI<\/td>SN74HCT165DR<\/td>SOIC-16<\/td>TTL-compatible inputs (4.5-5.5V)<\/td><\/tr>
        NXP<\/td>74HC165D<\/td>SOIC-16<\/td>Pin-compatible alternative<\/td><\/tr>
        TI<\/td>SN74HC165NSR<\/td>SOP-16<\/td>Shrink SOP package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3093","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=3093"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3093\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3093"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}