{"id":10676,"date":"2026-07-20T09:43:03","date_gmt":"2026-07-20T09:43:03","guid":{"rendered":"https:\/\/ic-vendor.com\/sn74hc259dr\/"},"modified":"2026-07-20T09:43:03","modified_gmt":"2026-07-20T09:43:03","slug":"sn74hc259dr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/sn74hc259dr\/","title":{"rendered":"SN74HC259DR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The SN74HC259DR from Texas Instruments is an 8-bit addressable latch in an SOIC-16 package, operating from 2V to 6V. It functions as an addressable latch, memory, 1-of-8 decoder\/demultiplexer, or clear-mode device depending on CLR and enable (G) input states, providing versatile storage and decoding for digital systems.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u0639\u0627\u0626\u0644\u0629 \u0627\u0644\u0645\u0646\u0637\u0642<\/td>\nHC (High-speed CMOS)<\/td>\n<\/tr>\n
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n8-bit addressable<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2V – 6V<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n14 ns (typical @ 5V)<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-5.2 mA @ 5V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n80 uA max (8 uA typical)<\/td>\n<\/tr>\n
Address Inputs<\/td>\n3 (S0, S1, S2)<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nPush-pull, non-inverting<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-16 (9.9×3.9 mm)<\/td>\n<\/tr>\n
Temperature<\/td>\n-40 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Four distinct functional modes: addressable latch, memory, 1-of-8 decoder, and clear<\/li>\n
  • Master reset (CLR) for asynchronous clearing of all outputs<\/li>\n
  • Enable input (G) simplifies expansion for n-bit applications<\/li>\n
  • Low 80 uA max quiescent current for power-efficient operation<\/li>\n
  • High-current outputs can drive up to 10 LSTTL loads<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Working registers and serial-holding registers in digital systems<\/li>\n
    • 1-of-8 active-high decoding and demultiplexing<\/li>\n
    • LED and display multiplexing drivers<\/li>\n
    • General-purpose digital storage and address decoding<\/li>\n
    • Peripheral I\/O expansion for microcontrollers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74HC259DR from Texas Instruments is an 8-bit addressable latch in an SOIC-16 package, operating from 2V to 6V. It functions as an addressable latch, memory, 1-of-8 decoder\/demultiplexer, or clear-mode device depending on CLR and enable (G) input states, providing versatile storage and decoding for digital systems. Key Specifications Logic Family HC (High-speed […]<\/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":[2017],"chip_brand":[138],"class_list":["post-10676","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-sn74hc259dr","chip_brand-ti"],"acf":{"brief_explanation":"8-bit addressable latch, 4 functional modes, 2-6V, 14ns tpd, SOIC-16","date_code":"","package_case":"SOIC-16 (D) 9.9x3.9 mm","in_stock":2458,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc259.pdf","price":"$0.1426 @ 2.5ku","product_introduction":"The SN74HC259 is an 8-bit addressable latch from Texas Instruments designed for general-purpose storage applications in digital systems. It can operate in four distinct modes depending on the CLR and G (enable) input states: addressable latch mode (data written to addressed latch), memory mode (all latches hold previous state), 1-of-8 demultiplexer mode (addressed output follows data input), and clear mode (all outputs low). The 3-bit address selects one of 8 output latches. With low quiescent current and push-pull outputs capable of driving 10 LSTTL loads, it is a versatile building block for digital logic systems.","working_principle":"The SN74HC259 contains 8 transparent D-latches selected by a 3-to-8 decoder (S0, S1, S2). The D (data) input feeds all latches, but only the addressed latch is enabled to accept new data when G is LOW and CLR is HIGH. Unaddressed latches retain their previous state. When G goes HIGH (with CLR HIGH), all latches enter memory mode, ignoring data and address changes. When CLR is LOW and G is LOW, the device acts as a 1-of-8 demultiplexer where the addressed output follows D and all others are LOW. When CLR is LOW and G is HIGH, all outputs are forced LOW (clear mode) regardless of address and data.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>S0<\/td>Input<\/td>Address bit 0<\/td><\/tr>
      2<\/td>D<\/td>Input<\/td>Data input<\/td><\/tr>
      3<\/td>Y7<\/td>Output<\/td>Latch output 7<\/td><\/tr>
      4<\/td>Y6<\/td>Output<\/td>Latch output 6<\/td><\/tr>
      5<\/td>Y5<\/td>Output<\/td>Latch output 5<\/td><\/tr>
      6<\/td>Y4<\/td>Output<\/td>Latch output 4<\/td><\/tr>
      7<\/td>Y3<\/td>Output<\/td>Latch output 3<\/td><\/tr>
      8<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      9<\/td>Y2<\/td>Output<\/td>Latch output 2<\/td><\/tr>
      10<\/td>Y1<\/td>Output<\/td>Latch output 1<\/td><\/tr>
      11<\/td>Y0<\/td>Output<\/td>Latch output 0<\/td><\/tr>
      12<\/td>CLR<\/td>Input<\/td>Master reset (active low)<\/td><\/tr>
      13<\/td>G<\/td>Input<\/td>Enable (active low)<\/td><\/tr>
      14<\/td>S2<\/td>Input<\/td>Address bit 2<\/td><\/tr>
      15<\/td>S1<\/td>Input<\/td>Address bit 1<\/td><\/tr>
      16<\/td>VCC<\/td>Power<\/td>Supply (2-6V)<\/td><\/tr><\/table>","application_scenarios":"
      • LED display multiplexing: 1-of-8 decoder drives individual digit selects<\/li>
      • I\/O expansion: microcontroller writes to 8 outputs via 3 address + 1 data line<\/li>
      • Serial-to-parallel conversion: clock data into addressed latches sequentially<\/li>
      • Address decoding: generate chip select signals from 3-bit address bus<\/li>
      • Digital control systems: store control states in addressable latches<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74HC259N<\/td>PDIP-16<\/td>Same function, through-hole<\/td><\/tr>
        TI<\/td>SN74HC259PW<\/td>TSSOP-16<\/td>Same function, TSSOP<\/td><\/tr>
        Nexperia<\/td>74HC259D<\/td>SOIC-16<\/td>Pin-compatible alternative<\/td><\/tr>
        onsemi<\/td>MC74HC259ADR2G<\/td>SOIC-16<\/td>HC family equivalent<\/td><\/tr>
        TI<\/td>SN74LS259N<\/td>PDIP-16<\/td>LS TTL variant<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10676"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10676\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10676"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10676"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}