{"id":8042,"date":"2026-06-28T08:48:05","date_gmt":"2026-06-28T08:48:05","guid":{"rendered":"https:\/\/materialparts.com\/sn74hc595n-4\/"},"modified":"2026-06-28T11:43:33","modified_gmt":"2026-06-28T11:43:33","slug":"sn74hc595n-4","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sn74hc595n-4\/","title":{"rendered":"SN74HC595N"},"content":{"rendered":"<h2>SN74HC595N Overview<\/h2>\n<p>The SN74HC595N is an 8-bit shift register with output latches and 3-state outputs from Texas Instruments, supply voltage 2V-6V, maximum clock frequency 52MHz at 5V, in a DIP-16 through-hole package, widely used for LED matrix driving and I\/O expansion.<\/p>\n<h3>\u4e3b\u8981\u529f\u80fd<\/h3>\n<ul>\n<li>8-bit shift register + output latch<\/li>\n<li>Supply voltage: 2V-6V<\/li>\n<li>Maximum clock frequency: 52MHz at 5V<\/li>\n<li>Output current: +\/-6mA<\/li>\n<li>3-state outputs<\/li>\n<li>Serial cascade output (QH prime)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>SN74HC595N Overview The SN74HC595N is an 8-bit shift register with output latches and 3-state outputs from Texas Instruments, supply voltage 2V-6V, maximum clock frequency 52MHz at 5V, in a DIP-16 through-hole package, widely used for LED matrix driving and I\/O expansion. Key Features 8-bit shift register + output latch Supply voltage: 2V-6V Maximum clock frequency: [&hellip;]<\/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":[],"chip_brand":[138],"class_list":["post-8042","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"8-bit shift register with output latch, DIP-16","date_code":"","package_case":"DIP-16 (19.30 x 6.35 mm, through-hole)","in_stock":12989,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc595.pdf","price":"$0.55 @ 1ku","product_introduction":"The SN74HC595N is an 8-bit serial-in, parallel-out shift register with 3-state output registers from Texas Instruments, packaged in a 16-pin PDIP through-hole format. It features a wide 2 V to 6 V operating voltage range, 13 ns typical propagation delay, and plus or minus 6 mA output drive at 5 V. The device contains an 8-bit shift register that feeds an 8-bit D-type storage register with parallel 3-state outputs, allowing the shift register and output register to operate independently. With separate clocks, direct clear, serial output for cascading, and output enable control, it is a versatile logic building block for I\/O expansion and LED driving.","working_principle":"The SN74HC595N consists of two independently clocked 8-bit registers. Data is shifted into the 8-bit shift register on the rising edge of the shift register clock (SRCLK). Each rising edge moves the existing data one position and loads the SER input into the first stage. The shift register output (QH prime) provides the cascaded serial output for daisy-chaining multiple devices. On the rising edge of the register clock (RCLK), the contents of the shift register are transferred to the 8-bit storage register. The storage register outputs (QA through QH) are enabled when the output enable (OE) input is low; when OE is high, the outputs are in a high-impedance state. The shift register clear (SRCLR) input, when low, resets all shift register stages to low independently of the clocks. This dual-register architecture allows new data to be shifted in while the current output pattern remains stable, eliminating output flicker during updates. Multiple devices can be cascaded by connecting QH prime of one device to SER of the next, sharing SRCLK and RCLK across all devices.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>Q1<\/td><td>Storage register output bit 1<\/td><\/tr><tr><td>2<\/td><td>Q2<\/td><td>Storage register output bit 2<\/td><\/tr><tr><td>3<\/td><td>Q3<\/td><td>Storage register output bit 3<\/td><\/tr><tr><td>4<\/td><td>Q4<\/td><td>Storage register output bit 4<\/td><\/tr><tr><td>5<\/td><td>Q5<\/td><td>Storage register output bit 5<\/td><\/tr><tr><td>6<\/td><td>Q6<\/td><td>Storage register output bit 6<\/td><\/tr><tr><td>7<\/td><td>Q7<\/td><td>Storage register output bit 7<\/td><\/tr><tr><td>8<\/td><td>GND<\/td><td>Ground<\/td><\/tr><tr><td>9<\/td><td>Q7'<\/td><td>Serial output from shift register; cascade to next device SER input<\/td><\/tr><tr><td>10<\/td><td>SRCLR<\/td><td>Shift register clear; active low, resets all shift register bits<\/td><\/tr><tr><td>11<\/td><td>SRCLK<\/td><td>Shift register clock; rising edge shifts data one position<\/td><\/tr><tr><td>12<\/td><td>RCLK<\/td><td>Register clock; rising edge transfers shift register to storage register<\/td><\/tr><tr><td>13<\/td><td>OE<\/td><td>Output enable; active low, high forces outputs to high-impedance<\/td><\/tr><tr><td>14<\/td><td>SER<\/td><td>Serial data input; loaded into first shift register stage on SRCLK rising edge<\/td><\/tr><tr><td>15<\/td><td>Q0<\/td><td>Storage register output bit 0<\/td><\/tr><tr><td>16<\/td><td>VCC<\/td><td>Power supply (2 V to 6 V)<\/td><\/tr><\/table>","application_scenarios":"<ul><li><strong>LED Matrix Driving<\/strong>: Cascaded shift registers for multiplexed LED displays and 7-segment indicators<\/li><li><strong>GPIO Expansion<\/strong>: Adding 8 or more digital outputs to a microcontroller using only 3 SPI pins<\/li><li><strong>Relay Control<\/strong>: Driving multiple relay coils through shift register outputs with latch capability<\/li><li><strong>Industrial Control Panels<\/strong>: Indicator lamp and switch status display in factory equipment<\/li><li><strong>Hobbyist Projects<\/strong>: Arduino\/Raspberry Pi I\/O expansion for robotics and automation<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Bits<\/th><th>Package<\/th><th>Mount<\/th><th>Notes<\/th><\/tr><tr><td>SN74HC595DR<\/td><td>Texas Instruments<\/td><td>8<\/td><td>SOIC-16<\/td><td>SMD<\/td><td>Surface-mount variant<\/td><\/tr><tr><td>74HC595D<\/td><td>Nexperia<\/td><td>8<\/td><td>SOIC-16<\/td><td>SMD<\/td><td>Pin-compatible alternative<\/td><\/tr><tr><td>MC74HC595ADG<\/td><td>onsemi<\/td><td>8<\/td><td>SOIC-16<\/td><td>SMD<\/td><td>onsemi equivalent<\/td><\/tr><tr><td>SN74HC595DBR<\/td><td>Texas Instruments<\/td><td>8<\/td><td>SSOP-16<\/td><td>SMD<\/td><td>Smaller footprint package<\/td><\/tr><tr><td>TPIC6B595N<\/td><td>Texas Instruments<\/td><td>8<\/td><td>DIP-20<\/td><td>TH<\/td><td>Power shift register, 500 mA outputs<\/td><\/tr><\/table>\n<p>SN74HC595N is an 8-bit shift register with 3-state output from TI in PDIP-16. The SN74HC595DR is the SOIC-16 surface-mount version with identical functionality. 74HC595D from Nexperia provides the same function in SOIC-16. For higher voltage, CD4094BE offers 3-18V CMOS operation in DIP-16. For cascaded designs, the QH prime output enables daisy-chaining. TLC6C598 is a constant-current LED driver version for display applications.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8042","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=8042"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8042\/revisions"}],"predecessor-version":[{"id":8089,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8042\/revisions\/8089"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8042"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}