{"id":7846,"date":"2026-06-28T02:48:24","date_gmt":"2026-06-28T02:48:24","guid":{"rendered":"https:\/\/materialparts.com\/max3232ese-4\/"},"modified":"2026-06-28T10:20:17","modified_gmt":"2026-06-28T10:20:17","slug":"max3232ese-4","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/max3232ese-4\/","title":{"rendered":"MAX3232ESE"},"content":{"rendered":"

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

The MAX3232ESE is a 3.3V-powered RS-232 transceiver from Analog Devices (Maxim) with dual driver\/receiver, 250kbps data rate, and ESD protection up to \u00b115kV in a 16-pin SOIC package.<\/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\n\n\n
Number of Drivers<\/td>\n2<\/td>\n<\/tr>\n
Number of Receivers<\/td>\n2<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3.0V to 5.5V<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n250kbps (max)<\/td>\n<\/tr>\n
ESD Protection<\/td>\n\u00b115kV HBM on RS-232 pins<\/td>\n<\/tr>\n
Charge Pump<\/td>\nDual, requires 4 external 0.1\u00b5F capacitors<\/td>\n<\/tr>\n
Output Voltage Swing<\/td>\n\u00b15.4V typical (at 3.3V supply)<\/td>\n<\/tr>\n
Receiver Input Threshold<\/td>\n0.6V min, 2.4V max (TTL\/CMOS)<\/td>\n<\/tr>\n
Driver Output Current<\/td>\nShort-circuit protected<\/td>\n<\/tr>\n
Supply Current<\/td>\n1mA typical (no load)<\/td>\n<\/tr>\n
Shutdown Mode<\/td>\n1\u00b5A (MAX3232E variant)<\/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 (10.3 x 7.5mm)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Operates from single 3.0V to 5.5V supply<\/li>\n
  • Meets EIA\/TIA-232 and V.28 specifications<\/li>\n
  • \u00b115kV ESD protection on RS-232 pins (HBM)<\/li>\n
  • Requires only four 0.1\u00b5F external capacitors<\/li>\n
  • 250kbps data rate for high-speed RS-232 communication<\/li>\n
  • Low 1mA supply current in normal operation<\/li>\n
  • Guaranteed 120kbps with worst-case load<\/li>\n
  • Slew-rate controlled drivers reduce EMI<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • RS-232 serial communication interfaces<\/li>\n
    • Microcontroller UART-to-RS232 conversion<\/li>\n
    • Battery-powered data logging systems<\/li>\n
    • Industrial serial communication links<\/li>\n
    • Point-of-sale terminals and modems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MAX3232ESE is a 3.3V-powered RS-232 transceiver from Analog Devices (Maxim) with dual driver\/receiver, 250kbps data rate, and ESD protection up to \u00b115kV in a 16-pin SOIC package. Key Specifications Number of Drivers 2 Number of Receivers 2 Supply Voltage 3.0V to 5.5V Data Rate 250kbps (max) ESD Protection \u00b115kV HBM on RS-232 […]<\/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":[13,20],"tags":[],"chip_brand":[165],"class_list":["post-7846","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-adi"],"acf":{"brief_explanation":"3.3V RS-232 transceiver, 2Tx\/2Rx, 250kbps, \u00b115kV ESD, SOIC-16","date_code":"","package_case":"SOIC-16 (10.3 x 7.5 x 2.35mm, 1.27mm pitch)","in_stock":11800,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/MAX3232.pdf","price":"$1.85 @ 1ku","product_introduction":"The MAX3232ESE is a 3.3V-powered RS-232 transceiver from Analog Devices (Maxim Integrated) that provides two drivers and two receivers for full-duplex RS-232 communication. The internal dual charge pump generates \u00b15.4V RS-232 output levels from a single 3.0V to 5.5V supply using only four external 0.1\u00b5F capacitors. The device supports data rates up to 250kbps and provides \u00b115kV ESD protection on the RS-232 interface pins, meeting IEC 1000-4-2 requirements. The E-variant (enhanced) is rated for the extended -40\u00b0C to +85\u00b0C operating temperature range. Slew-rate controlled drivers reduce electromagnetic interference while maintaining compatibility with standard RS-232 receivers.","working_principle":"The MAX3232ESE converts TTL\/CMOS logic levels to RS-232 voltage levels and vice versa using an internal dual charge pump and level-shifting circuitry. The charge pump uses a switched-capacitor voltage inverter and doubler to generate +5.4V (V+) and -5.4V (V-) from the 3.3V VCC supply, requiring four external 0.1\u00b5F capacitors (C1-C4). The driver circuits translate the 0-3.3V TTL input to \u00b15.4V RS-232 output levels by switching between the V+ and V- rails. Slew-rate limiting on the driver outputs controls the rise and fall times to approximately 30V\/\u00b5s, limiting high-frequency spectral content and reducing EMI while maintaining adequate signal integrity at 250kbps. The receiver circuits convert RS-232 input levels (\u00b13V to \u00b115V) to 0-3.3V TTL\/CMOS output levels using a comparator with a threshold between 0.6V and 2.4V. The 1\u00b5A shutdown mode (E-variant) disables the charge pump and drivers to conserve battery power in portable applications.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>C1+<\/td>Charge Pump<\/td>Capacitor C1 positive terminal<\/td><\/tr>\n
      2<\/td>V+<\/td>Charge Pump<\/td>+5.4V generated voltage<\/td><\/tr>\n
      3<\/td>C1-<\/td>Charge Pump<\/td>Capacitor C1 negative terminal<\/td><\/tr>\n
      4<\/td>C2+<\/td>Charge Pump<\/td>Capacitor C2 positive terminal<\/td><\/tr>\n
      5<\/td>C2-<\/td>Charge Pump<\/td>Capacitor C2 negative terminal<\/td><\/tr>\n
      6<\/td>V-<\/td>Charge Pump<\/td>-5.4V generated voltage<\/td><\/tr>\n
      7<\/td>DOUT2<\/td>RS-232 Output<\/td>Driver 2 RS-232 output<\/td><\/tr>\n
      8<\/td>RIN2<\/td>RS-232 Input<\/td>Receiver 2 RS-232 input<\/td><\/tr>\n
      9<\/td>ROUT2<\/td>TTL Output<\/td>Receiver 2 TTL\/CMOS output<\/td><\/tr>\n
      10<\/td>DIN2<\/td>TTL Input<\/td>Driver 2 TTL\/CMOS input<\/td><\/tr>\n
      11<\/td>DIN1<\/td>TTL Input<\/td>Driver 1 TTL\/CMOS input<\/td><\/tr>\n
      12<\/td>ROUT1<\/td>TTL Output<\/td>Receiver 1 TTL\/CMOS output<\/td><\/tr>\n
      13<\/td>RIN1<\/td>RS-232 Input<\/td>Receiver 1 RS-232 input<\/td><\/tr>\n
      14<\/td>DOUT1<\/td>RS-232 Output<\/td>Driver 1 RS-232 output<\/td><\/tr>\n
      15<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      16<\/td>VCC<\/td>Power<\/td>Supply voltage (3.0V-5.5V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • MCU UART Interface:<\/strong> Converts 3.3V MCU UART TX\/RX to RS-232 levels for communication with legacy serial devices<\/li>\n
      • Industrial Serial Links:<\/strong> \u00b115kV ESD protection and \u00b15.4V output swing ensure reliable communication in electrically noisy environments<\/li>\n
      • Battery-Powered Systems:<\/strong> 1mA supply current and optional 1\u00b5A shutdown conserve battery in portable data loggers<\/li>\n
      • Point-of-Sale:<\/strong> Dual driver\/receiver supports full-duplex communication with receipt printers and barcode scanners<\/li>\n
      • Embedded Debug Ports:<\/strong> Simple 4-capacitor external circuit provides RS-232 debug console from 3.3V MCU<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Specs<\/th><\/tr>\n
        MAX232CPE<\/td>ADI<\/td>5V-only original version with 2Tx\/2Rs and 120kbps rate in DIP-16 for legacy 5V systems<\/td>DIP-16<\/td>120kbps\/5V<\/td><\/tr>\n
        SP3232EBCN-L\/TR<\/td>Silicon Labs<\/td>3.3V\/5V equivalent with auto-powerdown and \u00b115kV ESD protection on bus pins<\/td>DIP-16<\/td>250kbps\/3-5.5V<\/td><\/tr>\n
        ST3232EBPR<\/td>ST<\/td>3-5.5V RS-232 with enhanced \u00b115kV IEC ESD and low 300\u00b5A supply current<\/td>TSSOP-16<\/td>250kbps\/3-5.5V<\/td><\/tr>\n
        TRS3232EIPWR<\/td>TI<\/td>Pin-compatible 3-5.5V RS-232 with 1\u00b5A auto-powerdown and \u00b115kV HBM ESD rating<\/td>TSSOP-16<\/td>250kbps\/3-5.5V<\/td><\/tr>\n
        MAX3243CAI+T<\/td>ADI<\/td>3Tx\/5Rs triple-channel version for multi-port serial applications in SSOP-28<\/td>SSOP-28<\/td>250kbps\/3-5.5V<\/td><\/tr>\n<\/table>\n

        MAX3232ESE is a 3.3-5.5V dual RS-232 transceiver in SOIC-16 with 2Tx\/2Rx, 250kbps data rate, and \u00b115kV ESD protection. It replaces the 5V-only MAX232 for mixed-voltage systems. SP3232 and ST3232 are pin-compatible alternatives. Only four 0.1\u00b5F charge pump capacitors are required (vs 1\u00b5F for MAX232). For single-port designs, MAX3221 provides 1Mbps in a smaller package.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7846","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=7846"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7846\/revisions"}],"predecessor-version":[{"id":8290,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7846\/revisions\/8290"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7846"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7846"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}