{"id":3306,"date":"2026-06-01T00:45:23","date_gmt":"2026-06-01T00:45:23","guid":{"rendered":"https:\/\/materialparts.com\/sn74hc595dr\/"},"modified":"2026-06-01T00:45:23","modified_gmt":"2026-06-01T00:45:23","slug":"sn74hc595dr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sn74hc595dr\/","title":{"rendered":"SN74HC595DR"},"content":{"rendered":"

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

The SN74HC595DR from Texas Instruments is an 8-bit serial-in\/parallel-out shift register with output latches and 3-state outputs. It is one of the most widely used logic ICs for expanding output capabilities of microcontrollers. Using only 3 GPIO pins (data, clock, latch), it can control 8 output lines, and multiple devices can be daisy-chained for virtually unlimited expansion. The device operates from 2V to 6V and is housed in a 16-pin SOIC package for surface-mount applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Bits<\/td>\n8-bit shift register + 8-bit storage register<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2V to 6V<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\n3-state (high, low, high-impedance)<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-6mA at 5V<\/td>\n<\/tr>\n
Max Clock Frequency<\/td>\n24MHz at 5V<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n13ns typical at 5V<\/td>\n<\/tr>\n
Supply Current<\/td>\n80uA max (ICC)<\/td>\n<\/tr>\n
Input Current<\/td>\n1uA max<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-16 (D)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 8-bit serial-in, parallel-out shift register with output storage register<\/li>\n
  • Separate clocks for shift and storage registers<\/li>\n
  • Direct overriding clear (SRCLR) input<\/li>\n

3-state outputs can drive up to 15 LSTTL loads<\/li>\n
  • Serial output (QH’) for daisy-chaining multiple devices<\/li>\n
  • Low power consumption: 80uA max ICC<\/li>\n
  • Wide operating voltage range: 2V to 6V<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • LED display and matrix driving<\/li>\n
    • Microcontroller I\/O expansion<\/li>\n
    • 7-segment display multiplexing<\/li>\n
    • Relay and solenoid driver control<\/li>\n
    • Digital logic delay and storage circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74HC595DR from Texas Instruments is an 8-bit serial-in\/parallel-out shift register with output latches and 3-state outputs. It is one of the most widely used logic ICs for expanding output capabilities of microcontrollers. Using only 3 GPIO pins (data, clock, latch), it can control 8 output lines, and multiple devices can be daisy-chained […]<\/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-3306","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"8-bit shift register with 3-state output latches, 2-6V, SOIC-16","date_code":"","package_case":"SOIC-16 (D) (9.9 x 3.9 x 1.58 mm)","in_stock":3679,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc595.pdf","price":"$0.19 @ 1ku","product_introduction":"The SN74HC595DR from Texas Instruments is a classic 8-bit shift register with output storage register and 3-state outputs, belonging to the 74HC logic family. It is one of the most popular logic ICs in embedded design, used to expand the number of digital outputs available from a microcontroller. Using just three control signals (SER, SRCLK, RCLK), a single device provides 8 output lines, and multiple devices can be cascaded through the serial output (QH') pin for unlimited expansion. The separate shift and storage registers allow new data to be shifted in while the current output remains stable, preventing flicker in display applications. The SOIC-16 surface-mount package is suitable for automated PCB assembly.","working_principle":"The SN74HC595DR contains two 8-bit registers operating in tandem. The shift register accepts serial data on the SER input, clocked in on each rising edge of SRCLK. After 8 bits have been shifted in, the RCLK (register clock) rising edge transfers the shift register contents to the storage register, which directly drives the 8 parallel outputs (QA-QH). The SRCLR (shift register clear) input resets the shift register independently of the storage register. The OE (output enable) input, when high, places all outputs in a high-impedance state, while internal register data and the QH' serial output remain unaffected. The QH' output provides the 9th and subsequent shift register bits for daisy-chaining additional 595 devices. This dual-register architecture ensures glitch-free output transitions since outputs only update when RCLK is pulsed.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>QB<\/td>Output<\/td>Storage register output B<\/td><\/tr>
      2<\/td>QC<\/td>Output<\/td>Storage register output C<\/td><\/tr>
      3<\/td>QD<\/td>Output<\/td>Storage register output D<\/td><\/tr>
      4<\/td>QE<\/td>Output<\/td>Storage register output E<\/td><\/tr>
      5<\/td>QF<\/td>Output<\/td>Storage register output F<\/td><\/tr>
      6<\/td>QG<\/td>Output<\/td>Storage register output G<\/td><\/tr>
      7<\/td>QH<\/td>Output<\/td>Storage register output H<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      9<\/td>QH'<\/td>Output<\/td>Serial output for cascading<\/td><\/tr>
      10<\/td>SRCLR<\/td>Input<\/td>Shift register clear (active low)<\/td><\/tr>
      11<\/td>SRCLK<\/td>Input<\/td>Shift register clock<\/td><\/tr>
      12<\/td>RCLK<\/td>Input<\/td>Storage register clock (latch)<\/td><\/tr>
      13<\/td>OE<\/td>Input<\/td>Output enable (active low)<\/td><\/tr>
      14<\/td>SER<\/td>Input<\/td>Serial data input<\/td><\/tr>
      15<\/td>QA<\/td>Output<\/td>Storage register output A<\/td><\/tr>
      16<\/td>VCC<\/td>Power<\/td>Supply voltage (2-6V)<\/td><\/tr><\/table>","application_scenarios":"
      • LED matrix and 7-segment display driving with multiplexed control<\/li>
      • Microcontroller I\/O expansion for relay, solenoid, and actuator control<\/li>
      • Daisy-chained shift register networks for large-scale digital output systems<\/li>
      • Shift-and-store data buffering in digital communication interfaces<\/li>
      • Hobbyist and educational projects for GPIO expansion on Arduino\/Raspberry Pi<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74HC595N<\/td>DIP-16<\/td>Through-hole version<\/td><\/tr>
        TI<\/td>SN74HCS595DR<\/td>SOIC-16<\/td>Schmitt trigger inputs version<\/td><\/tr>
        NXP<\/td>74HC595D<\/td>SOIC-16<\/td>Pin compatible equivalent<\/td><\/tr>
        Microchip<\/td>74HC595<\/td>SOIC-16<\/td>Generic HC595 equivalent<\/td><\/tr>
        ST<\/td>M74HC595M1R<\/td>SOIC-16<\/td>Pin compatible, same function<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3306","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=3306"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3306\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3306"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3306"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}