{"id":3811,"date":"2026-06-08T04:11:22","date_gmt":"2026-06-08T04:11:22","guid":{"rendered":"https:\/\/materialparts.com\/sp3220eey-l-tr\/"},"modified":"2026-06-08T04:11:22","modified_gmt":"2026-06-08T04:11:22","slug":"sp3220eey-l-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/sp3220eey-l-tr\/","title":{"rendered":"SP3220EEY-L\/TR"},"content":{"rendered":"

Productos<\/h2>\n

The SP3220EEY-L\/TR from Sipex\/MaxLinear is a 3.3V RS-232 transceiver with 3 drivers and 5 receivers in a 28-lead SSOP package, meeting EIA\/TIA-232-F standards with 120kbps data rate.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Funci\u00f3n<\/td>\n3.3V RS-232 Transceiver (3Tx\/5Rx)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n3.0V to 5.5V (single supply)<\/td>\n<\/tr>\n
Drivers (Transmitters)<\/td>\n3<\/td>\n<\/tr>\n
Receivers<\/td>\n5<\/td>\n<\/tr>\n
Velocidad de datos<\/td>\n120 kbps (min), 250 kbps (typ)<\/td>\n<\/tr>\n
ESD Protection<\/td>\n+\/-15kV HBM, +\/-8kV IEC 61000-4-2<\/td>\n<\/tr>\n
Charge Pump<\/td>\nIntegrated (doubles\/inverts supply)<\/td>\n<\/tr>\n
Auto Power-Down<\/td>\nYes (1uA shutdown current)<\/td>\n<\/tr>\n
Paquete<\/td>\n28-SSOP (5.3mm width)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 3.3V single supply operation with integrated charge pump<\/li>\n
  • 3 drivers + 5 receivers for full serial port plus mouse<\/li>\n
  • Auto power-down when no valid RS-232 signal present<\/li>\n
  • +\/-15kV ESD protection on RS-232 pins<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Serial communication ports<\/li>\n
    • Handheld devices with RS-232<\/li>\n
    • Point-of-sale terminals<\/li>\n
    • Industrial serial interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SP3220EEY-L\/TR from Sipex\/MaxLinear is a 3.3V RS-232 transceiver with 3 drivers and 5 receivers in a 28-lead SSOP package, meeting EIA\/TIA-232-F standards with 120kbps data rate. Key Specifications Function 3.3V RS-232 Transceiver (3Tx\/5Rx) Supply Voltage 3.0V to 5.5V (single supply) Drivers (Transmitters) 3 Receivers 5 Data Rate 120 kbps (min), 250 kbps […]<\/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":[171],"class_list":["post-3811","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-maxlinear"],"acf":{"brief_explanation":"3.3V RS-232 3Tx\/5Rx transceiver, auto power-down, 120kbps, SSOP-28","date_code":"","package_case":"28-SSOP (5.3 x 10.2 x 1.75 mm, EY package, 0.65mm pitch)","in_stock":7018,"datasheet":"https:\/\/www.maxlinear.com\/product\/interface\/rs-232\/sp3220","price":"$1.50 @ 1ku","product_introduction":"The SP3220EEY-L\/TR from Sipex (now MaxLinear) is a 3.0V to 5.5V powered RS-232 transceiver that provides 3 drivers and 5 receivers in a single 28-lead SSOP package. The 3-driver\/5-receiver configuration is specifically designed for serial port applications that require the standard serial port signals (TX, RX, RTS, CTS, DTR, DSR, DCD, RI) plus a PS\/2 mouse port, making it a popular choice for laptop and notebook computer serial port implementations. The integrated charge pump uses four external 0.1uF capacitors to generate the +\/-5.5V (minimum) RS-232 voltage levels from a single 3.0V to 5.5V supply, eliminating the need for dual +\/-12V supplies traditionally required for RS-232 communication. The charge pump voltage doubler and inverter operate at a high internal frequency to minimize capacitor size. The auto power-down feature monitors the RS-232 receiver inputs; when no valid RS-232 signal is detected on any receiver for approximately 30 seconds, the device enters a low-power shutdown mode consuming only 1uA, making it ideal for battery-powered devices. The device automatically wakes up when a valid RS-232 signal returns. The +\/-15kV HBM and +\/-8kV IEC 61000-4-2 ESD protection on the RS-232 pins provides robust protection against electrostatic discharge during cable connection and disconnection. The 120kbps minimum data rate supports all standard RS-232 baud rates up to 115.2kbps.","working_principle":"The SP3220EEY-L\/TR operates as an RS-232 level translator with integrated charge pump. Key subsystems include: (1) Charge Pump - a voltage doubler circuit uses two external capacitors (C1, C2) to double VCC to approximately 2xVCC, and a voltage inverter uses two more capacitors (C3, C4) to invert the doubled voltage to approximately -2xVCC; with a 3.3V supply, the charge pump generates approximately +5.5V and -5.5V, which meet the +\/-5V minimum RS-232 output requirement; the charge pump operates at an internal oscillator frequency of approximately 300kHz; (2) Drivers - three inverting level translators convert TTL\/CMOS logic levels (0V\/3.3V) to RS-232 levels (+5.5V\/-5.5V); the drivers have a typical output swing of +\/-5.4V with a 3.3V supply and 3kOhm\/1000pF RS-232 load; the drivers are current-limited and can be forced to opposite polarity by an active RS-232 signal without damage; (3) Receivers - five inverting level translators convert RS-232 levels (+\/-3V to +\/-15V) to TTL\/CMOS logic levels; the receivers have a 0.8V hysteresis for noise immunity; the input threshold is 0.8V to 2.4V for standard TTL compatibility; the receiver inputs can withstand +\/-25V without damage; (4) Auto Power-Down - the receiver input monitor circuit checks if any valid RS-232 signal (more positive than approximately 2.7V or more negative than -2.7V) is present on any receiver input; if no signal is detected for approximately 30 seconds, the charge pump and drivers are disabled, reducing supply current to 1uA; the receivers remain active at reduced sensitivity to detect when a signal returns.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1-3<\/td>DIN1-DIN3<\/td>Driver TTL inputs<\/td><\/tr>
      4-6<\/td>ROUT1-ROUT3<\/td>Receiver TTL outputs<\/td><\/tr>
      7<\/td>GND<\/td>Ground<\/td><\/tr>
      8<\/td>VCC<\/td>Supply (3.0V to 5.5V)<\/td><\/tr>
      9<\/td>V+<\/td>Charge pump doubled voltage (+5.5V)<\/td><\/tr>
      10<\/td>V-<\/td>Charge pump inverted voltage (-5.5V)<\/td><\/tr>
      11<\/td>C1+, C1-<\/td>Charge pump capacitor 1<\/td><\/tr>
      12<\/td>C2+, C2-<\/td>Charge pump capacitor 2<\/td><\/tr>
      13-15<\/td>DOUT1-DOUT3<\/td>Driver RS-232 outputs<\/td><\/tr>
      16-20<\/td>RIN1-RIN5<\/td>Receiver RS-232 inputs<\/td><\/tr><\/table>","application_scenarios":"
      • Laptop serial port: 3Tx\/5Rx provides full serial port (TX, RX, RTS, CTS, DTR, DSR, DCD, RI) plus mouse interface<\/li>
      • Handheld device: 3.3V supply, auto power-down to 1uA when cable disconnected, +\/-15kV ESD for hot-plug<\/li>
      • POS terminal: RS-232 interface for receipt printer and barcode scanner on same device<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        MaxLinear<\/td>SP3232ECA-L\/TR<\/td>SSOP-16<\/td>2Tx\/2Rx, 3.3V, smaller package<\/td><\/tr>
        TI<\/td>MAX3232EIPWR<\/td>TSSOP-16<\/td>2Tx\/2Rx, 3.3V, pin-compatible<\/td><\/tr>
        ADI<\/td>ADM3232EARUZ<\/td>TSSOP-20<\/td>2Tx\/2Rx, 3.3V, ESD protected<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3811","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3811"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3811\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3811"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}