{"id":10653,"date":"2026-07-20T09:17:20","date_gmt":"2026-07-20T09:17:20","guid":{"rendered":"https:\/\/ic-vendor.com\/sn74hc573apwr\/"},"modified":"2026-07-20T09:17:20","modified_gmt":"2026-07-20T09:17:20","slug":"sn74hc573apwr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/sn74hc573apwr\/","title":{"rendered":"SN74HC573APWR"},"content":{"rendered":"

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

The SN74HC573APWR is an octal transparent D-type latch with 3-state outputs from Texas Instruments, packaged in a 20-pin TSSOP (PW) package. It features a single output enable and latch enable control, making it ideal for bus-oriented applications where data must be held while other devices access the bus. The HC family provides wide VCC range operation from 2V to 6V.<\/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
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\nOctal Transparent D-Type Latch<\/td>\n<\/tr>\n
Bits<\/td>\n8<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2V to 6V<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n3-\u0627\u0644\u062f\u0648\u0644\u0629<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n15ns (typ) at 4.5V<\/td>\n<\/tr>\n
Enable<\/td>\nOutput Enable (OE) + Latch Enable (LE)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n20-pin TSSOP (6.5 \u00d7 4.4 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \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
  • Octal (8-bit) transparent latch in a single device<\/li>\n
  • 3-state outputs for bus-oriented applications<\/li>\n
  • Transparent latch operation \u2014 outputs follow inputs when LE is high<\/li>\n
  • Output enable for bus sharing and isolation<\/li>\n
  • Wide VCC operating range: 2V to 6V<\/li>\n
  • HC family CMOS technology for low power consumption<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Microprocessor address\/data bus latching<\/li>\n
    • I\/O port expansion and bus buffering<\/li>\n
    • Memory address register holding<\/li>\n
    • LED display data latching<\/li>\n
    • General-purpose data storage and isolation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74HC573APWR is an octal transparent D-type latch with 3-state outputs from Texas Instruments, packaged in a 20-pin TSSOP (PW) package. It features a single output enable and latch enable control, making it ideal for bus-oriented applications where data must be held while other devices access the bus. The HC family provides wide […]<\/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":[1994],"chip_brand":[138],"class_list":["post-10653","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-sn74hc573apwr","chip_brand-ti"],"acf":{"brief_explanation":"Octal transparent D-latch, 3-state outputs, 2-6V, TSSOP-20","date_code":"","package_case":"TSSOP-20 (6.5 \u00d7 4.4 \u00d7 1.0 mm)","in_stock":14320,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc573a.pdf","price":"$0.26 @ 1ku","product_introduction":"The SN74HC573A is an octal transparent D-type latch with 3-state outputs from Texas Instruments' high-speed CMOS logic family. It features eight D-type latches with a common latch enable (LE) and output enable (OE) control. When LE is high, the Q outputs follow the D inputs (transparent mode). When LE goes low, the outputs are latched and retain the data that was present at the inputs before the transition. The 3-state output enable allows the device to be connected directly to a system bus, enabling bus sharing with other devices. The wide 2V to 6V VCC range and low power consumption make it versatile for both 3.3V and 5V systems.","working_principle":"The SN74HC573A contains eight transparent D-type latches. When the latch enable (LE) input is high, data on the D inputs flows through to the Q outputs (transparent mode). When LE transitions from high to low, the data present at the D inputs at that moment is latched and held on the Q outputs. The output enable (OE) is an active-low control that, when asserted, places all eight outputs in a high-impedance (3-state) condition. This allows multiple devices to share a common bus without contention. When OE is high, the outputs are active and drive either high or low logic levels based on the latched data. The 3-state capability combined with the octal width makes this device ideal for microprocessor bus interfacing and data routing.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OE<\/td>Input<\/td>Output enable \u2014 active low, high-Z when high<\/td><\/tr>
      2<\/td>D0<\/td>Input<\/td>Data input 0<\/td><\/tr>
      3<\/td>D1<\/td>Input<\/td>Data input 1<\/td><\/tr>
      4<\/td>D2<\/td>Input<\/td>Data input 2<\/td><\/tr>
      5<\/td>D3<\/td>Input<\/td>Data input 3<\/td><\/tr>
      6<\/td>D4<\/td>Input<\/td>Data input 4<\/td><\/tr>
      7<\/td>D5<\/td>Input<\/td>Data input 5<\/td><\/tr>
      8<\/td>D6<\/td>Input<\/td>Data input 6<\/td><\/tr>
      9<\/td>D7<\/td>Input<\/td>Data input 7<\/td><\/tr>
      10<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      11<\/td>LE<\/td>Input<\/td>Latch enable \u2014 high = transparent, low = latched<\/td><\/tr>
      12<\/td>Q7<\/td>Output<\/td>Data output 7<\/td><\/tr>
      13<\/td>Q6<\/td>Output<\/td>Data output 6<\/td><\/tr>
      14<\/td>Q5<\/td>Output<\/td>Data output 5<\/td><\/tr>
      15<\/td>Q4<\/td>Output<\/td>Data output 4<\/td><\/tr>
      16<\/td>Q3<\/td>Output<\/td>Data output 3<\/td><\/tr>
      17<\/td>Q2<\/td>Output<\/td>Data output 2<\/td><\/tr>
      18<\/td>Q1<\/td>Output<\/td>Data output 1<\/td><\/tr>
      19<\/td>Q0<\/td>Output<\/td>Data output 0<\/td><\/tr>
      20<\/td>VCC<\/td>Power<\/td>Supply voltage (2-6V)<\/td><\/tr><\/table>","application_scenarios":"
      • Microprocessor address bus latching in memory-mapped I\/O<\/li>
      • I\/O port expansion for embedded controllers<\/li>
      • Data bus isolation between processor and peripherals<\/li>
      • LED display multiplexing data register<\/li>
      • PLC digital I\/O module data holding<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74HC573ADWR<\/td>SOIC-20<\/td>Same function, wider SOIC package<\/td><\/tr>
        TI<\/td>SN74HC573ANSR<\/td>SO-20<\/td>Same function, different package option<\/td><\/tr>
        NXP<\/td>74HC573PW<\/td>TSSOP-20<\/td>Pin-compatible equivalent<\/td><\/tr>
        onsemi<\/td>MC74HC573ADW<\/td>SOIC-20<\/td>HC octal latch equivalent<\/td><\/tr>
        Renesas<\/td>74HC573T<\/td>TSSOP-20<\/td>Equivalent octal latch<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10653","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=10653"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10653\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10653"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10653"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}