{"id":3405,"date":"2026-06-04T04:30:56","date_gmt":"2026-06-04T04:30:56","guid":{"rendered":"https:\/\/materialparts.com\/st3232bdr\/"},"modified":"2026-06-04T04:30:56","modified_gmt":"2026-06-04T04:30:56","slug":"st3232bdr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/st3232bdr\/","title":{"rendered":"ST3232BDR"},"content":{"rendered":"

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

The ST3232BDR from STMicroelectronics is a 3V to 5.5V powered RS-232 transceiver with 2 drivers and 2 receivers. It provides true RS-232 performance with a proprietary low-dropout transmitter output stage, supporting data rates up to 400 kbps while consuming only 300 \u00b5A supply current, ideal for battery-powered and portable applications.<\/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
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3V to 5.5V<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\nUp to 400 kbps<\/td>\n<\/tr>\n
Supply Current<\/td>\n300 \u00b5A (typ)<\/td>\n<\/tr>\n
Number of Drivers<\/td>\n2<\/td>\n<\/tr>\n
Number of Receivers<\/td>\n2<\/td>\n<\/tr>\n
Slew Rate (min)<\/td>\n6 V\/\u00b5s<\/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
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-16<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 300 \u00b5A supply current<\/li>\n
  • Up to 400 kbps data rate<\/li>\n
  • 6 V\/\u00b5s minimum guaranteed slew rate<\/li>\n
  • Meets EIA\/TIA-232 specifications down to 3V<\/li>\n
  • Requires only four 0.1\u00b5F external capacitors<\/li>\n
  • Proprietary low-dropout transmitter output stage<\/li>\n
  • Dual charge pump for RS-232 level generation<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Notebook and palmtop computers<\/li>\n
    • Battery-powered equipment<\/li>\n
    • Handheld devices<\/li>\n
    • Peripherals and printers<\/li>\n
    • Industrial communication interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ST3232BDR from STMicroelectronics is a 3V to 5.5V powered RS-232 transceiver with 2 drivers and 2 receivers. It provides true RS-232 performance with a proprietary low-dropout transmitter output stage, supporting data rates up to 400 kbps while consuming only 300 \u00b5A supply current, ideal for battery-powered and portable applications. Key Specifications Supply […]<\/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":[13,20],"tags":[],"chip_brand":[142],"class_list":["post-3405","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-st"],"acf":{"brief_explanation":"3-5.5V RS-232 transceiver, 2Tx\/2Rx, 400kbps, 300\u00b5A Iq, SOIC-16","date_code":"","package_case":"SOIC-16 (10.0 x 4.0 x 1.5 mm)","in_stock":8848,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/st3232b.pdf","price":"$0.444 @ 2500","product_introduction":"The ST3232BDR is a 3V to 5.5V powered EIA\/TIA-232 and V.28\/V.24 communication interface transceiver from STMicroelectronics. It features a proprietary low-dropout transmitter output stage that provides true RS-232 performance from 3V to 5.5V supplies. The dual charge pump requires only four small 0.1\u00b5F external capacitors. With 300\u00b5A supply current and data rates up to 400kbps, it is ideal for battery-powered and portable communication applications.","working_principle":"The ST3232BDR operates through three main subsystems: (1) Dual Charge Pump: Generates the positive and negative supply voltages needed for RS-232 output levels from a single 3V to 5.5V supply using two voltage doublers and external capacitors. The V+ output reaches approximately 2\u00d7VCC and the V- output reaches approximately -2\u00d7VCC. (2) Transmitter Section: Two driver channels convert TTL\/CMOS logic levels to RS-232 compliant output levels with a minimum slew rate of 6V\/\u00b5s, supporting data rates up to 400kbps. (3) Receiver Section: Two receiver channels convert RS-232 input levels to TTL\/CMOS logic levels with input hysteresis for noise immunity, accepting input voltages up to \u00b125V.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>C1+<\/td>Charge Pump<\/td>Positive terminal for first capacitor<\/td><\/tr>
      2<\/td>V+<\/td>Output<\/td>Doubled voltage output<\/td><\/tr>
      3<\/td>C1-<\/td>Charge Pump<\/td>Negative terminal for first capacitor<\/td><\/tr>
      4<\/td>C2+<\/td>Charge Pump<\/td>Positive terminal for second capacitor<\/td><\/tr>
      5<\/td>C2-<\/td>Charge Pump<\/td>Negative terminal for second capacitor<\/td><\/tr>
      6<\/td>V-<\/td>Output<\/td>Inverted voltage output<\/td><\/tr>
      7<\/td>T2OUT<\/td>Output<\/td>Driver 2 RS-232 output<\/td><\/tr>
      8<\/td>R2IN<\/td>Input<\/td>Receiver 2 RS-232 input<\/td><\/tr>
      9<\/td>R2OUT<\/td>Output<\/td>Receiver 2 TTL output<\/td><\/tr>
      10<\/td>T2IN<\/td>Input<\/td>Driver 2 TTL input<\/td><\/tr>
      11<\/td>T1IN<\/td>Input<\/td>Driver 1 TTL input<\/td><\/tr>
      12<\/td>R1OUT<\/td>Output<\/td>Receiver 1 TTL output<\/td><\/tr>
      13<\/td>R1IN<\/td>Input<\/td>Receiver 1 RS-232 input<\/td><\/tr>
      14<\/td>T1OUT<\/td>Output<\/td>Driver 1 RS-232 output<\/td><\/tr>
      15<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      16<\/td>VCC<\/td>Power<\/td>Supply voltage (3V to 5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Portable computer RS-232 serial communication ports<\/li>
      • Battery-powered industrial data acquisition interfaces<\/li>
      • Handheld device serial connectivity<\/li>
      • Point-of-sale terminal communication<\/li>
      • Embedded system RS-232 debug ports<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Rate<\/th>Supply<\/th>Notes<\/th><\/tr>
        MAX3232CSE<\/td>Maxim\/ADI<\/td>1Mbps<\/td>3-5.5V<\/td>Higher speed alternative<\/td><\/tr>
        SP3232EEN<\/td>MaxLinear<\/td>250kbps<\/td>3-5.5V<\/td>ESD enhanced version<\/td><\/tr>
        ICL3232CPZ<\/td>Renesas<\/td>250kbps<\/td>3-5.5V<\/td>Pin-compatible<\/td><\/tr>
        ST3232ECTR<\/td>ST<\/td>400kbps<\/td>3-5.5V<\/td>TSSOP-16 package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=3405"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3405\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3405"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3405"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}