{"id":3391,"date":"2026-06-04T04:21:46","date_gmt":"2026-06-04T04:21:46","guid":{"rendered":"https:\/\/materialparts.com\/sn65c3221epwr\/"},"modified":"2026-06-04T04:21:46","modified_gmt":"2026-06-04T04:21:46","slug":"sn65c3221epwr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/sn65c3221epwr\/","title":{"rendered":"SN65C3221EPWR"},"content":{"rendered":"

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

The SN65C3221EPWR from Texas Instruments is a single-channel 3V to 5.5V RS-232 line driver and receiver with \u00b115kV IEC ESD protection in a TSSOP-16 package. It operates up to 1Mbps with auto-powerdown feature that reduces supply current to 1\u00b5A when the serial port is inactive.<\/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
Drivers per Package<\/td>\n1<\/td>\n<\/tr>\n
Receivers per Package<\/td>\n1<\/td>\n<\/tr>\n
Data Rate (max)<\/td>\n1 Mbps<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3V to 5.5V<\/td>\n<\/tr>\n
Driver Output Slew Rate<\/td>\n24 to 150 V\/\u00b5s<\/td>\n<\/tr>\n
ESD Protection (RS-232 pins)<\/td>\n\u00b115 kV HBM, \u00b18 kV IEC contact, \u00b115 kV IEC air-gap<\/td>\n<\/tr>\n
Auto-Powerdown Current<\/td>\n1 \u00b5A typical<\/td>\n<\/tr>\n
External Capacitors<\/td>\n4 \u00d7 0.1 \u00b5F<\/td>\n<\/tr>\n
Logic Voltage Compatibility<\/td>\nAccepts 5V logic with 3.3V supply<\/td>\n<\/tr>\n
INVALID Output<\/td>\nYes (indicates valid RS-232 signal presence)<\/td>\n<\/tr>\n
FORCEON\/FORCEOFF<\/td>\nYes (power management control)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +85\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTSSOP-16 (PW suffix)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1 driver + 1 receiver RS-232 transceiver<\/li>\n
  • 3V to 5.5V single supply with internal charge pump<\/li>\n
  • 1Mbps data rate<\/li>\n
  • \u00b115kV IEC 61000-4-2 ESD protection (pin-to-pin)<\/li>\n
  • Auto-powerdown: 1\u00b5A standby current<\/li>\n
  • INVALID output detects valid RS-232 signal<\/li>\n
  • FORCEON and FORCEOFF power management pins<\/li>\n
  • Only 4 external 0.1\u00b5F capacitors required<\/li>\n
  • Accepts 5V logic input with 3.3V supply<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial PC RS-232 ports<\/li>\n
    • Battery-powered systems<\/li>\n
    • Wired networking equipment<\/li>\n
    • Laptops and PDAs<\/li>\n
    • Handheld equipment serial ports<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN65C3221EPWR from Texas Instruments is a single-channel 3V to 5.5V RS-232 line driver and receiver with \u00b115kV IEC ESD protection in a TSSOP-16 package. It operates up to 1Mbps with auto-powerdown feature that reduces supply current to 1\u00b5A when the serial port is inactive. Key Specifications Drivers per Package 1 Receivers per […]<\/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":[138],"class_list":["post-3391","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"1Tx\/1Rx RS-232, 1Mbps, auto-powerdown, \u00b115kV IEC ESD, TSSOP-16","date_code":"","package_case":"TSSOP-16 \/ PW-16 (5.00 x 4.40 x 1.05mm, 0.65mm pitch)","in_stock":3977,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn65c3221e.pdf","price":"$0.87 @ 1ku","product_introduction":"The SN65C3221EPWR from TI is a single-channel RS-232 driver\/receiver in TSSOP-16. Operates from 3-5.5V with integrated dual charge pump and 4 external 0.1\u00b5F capacitors. 1Mbps data rate with \u00b115kV IEC ESD protection on RS-232 pins. Auto-powerdown reduces current to 1\u00b5A when no valid RS-232 signal is detected. INVALID output indicates signal presence. E suffix denotes enhanced ESD, P suffix denotes TSSOP-16, W suffix denotes tape-and-reel, R suffix denotes reel packaging. Ideal for battery-powered RS-232 communication.","working_principle":"The SN65C3221E integrates a dual charge pump that generates \u00b15.4V from the 3-5.5V VCC supply, enabling RS-232 compliant output levels (\u00b15V minimum) with only 4 external 0.1\u00b5F capacitors. The driver converts TTL\/CMOS logic levels to RS-232 levels, while the receiver converts RS-232 levels back to TTL\/CMOS. The auto-powerdown feature monitors the receiver input \u2014 if no valid RS-232 signal (outside \u00b10.3V for >30\u00b5s) is detected, the driver output is disabled and supply current drops to 1\u00b5A. When a valid signal returns, the device automatically reactivates. The FORCEON pin overrides auto-powerdown (active high), and FORCEOFF forces shutdown regardless of signal state. The INVALID output is high when a valid RS-232 signal (>\u00b12.7V or <30\u00b5s absent) is present.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>DIN<\/td>Input<\/td>Driver data input (TTL\/CMOS)<\/td><\/tr>
      2<\/td>C1+<\/td>Cap<\/td>Charge pump capacitor C1 positive<\/td><\/tr>
      3<\/td>V+<\/td>Power<\/td>Charge pump output (+5.4V typ)<\/td><\/tr>
      4<\/td>C1-<\/td>Cap<\/td>Charge pump capacitor C1 negative<\/td><\/tr>
      5<\/td>C2+<\/td>Cap<\/td>Charge pump capacitor C2 positive<\/td><\/tr>
      6<\/td>C2-<\/td>Cap<\/td>Charge pump capacitor C2 negative<\/td><\/tr>
      7<\/td>V-<\/td>Power<\/td>Charge pump output (-5.4V typ)<\/td><\/tr>
      8<\/td>DOUT<\/td>Output<\/td>Driver output (RS-232 level)<\/td><\/tr>
      9<\/td>RIN<\/td>Input<\/td>Receiver input (RS-232 level)<\/td><\/tr>
      10<\/td>ROUT<\/td>Output<\/td>Receiver output (TTL\/CMOS level)<\/td><\/tr>
      11<\/td>INVALID<\/td>Output<\/td>RS-232 signal validity indicator<\/td><\/tr>
      12<\/td>FORCEOFF<\/td>Input<\/td>Force shutdown (active low)<\/td><\/tr>
      13<\/td>FORCEON<\/td>Input<\/td>Force driver enable (active high)<\/td><\/tr>
      14-16<\/td>GND\/VCC\/NC<\/td>Power<\/td>Ground, supply, no-connect<\/td><\/tr><\/table>","application_scenarios":"
      • Portable instrument RS-232 port with auto-powerdown for battery life<\/li>
      • Industrial PLC RS-232 communication with \u00b115kV ESD protection<\/li>
      • Laptop serial port with 1Mbps data rate and power management<\/li>
      • Data center server serial console port<\/li>
      • Handheld device RS-232 debug interface with auto-wake<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN65C3221EDBR<\/td>SSOP-16<\/td>SSOP-16 package variant<\/td><\/tr>
        TI<\/td>MAX3232IPWR<\/td>TSSOP-16<\/td>2Tx\/2Rx, no auto-powerdown<\/td><\/tr>
        MaxLinear<\/td>SP3232EEN<\/td>TSSOP-16<\/td>Pin-compatible alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3391","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=3391"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3391\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3391"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3391"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}