{"id":7613,"date":"2026-06-26T06:56:39","date_gmt":"2026-06-26T06:56:39","guid":{"rendered":"https:\/\/ic-vendor.com\/ch340g-2\/"},"modified":"2026-06-26T13:51:51","modified_gmt":"2026-06-26T13:51:51","slug":"ch340g-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/ch340g-2\/","title":{"rendered":"CH340G"},"content":{"rendered":"

Productos<\/h2>\n

The CH340G from WCH is a USB-to-UART serial converter with built-in 12MHz crystal, USB 2.0 full-speed, and multi-protocol UART in SOP-16 package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
USB<\/td>\nUSB 2.0 Full-speed (12Mbps)<\/td>\n<\/tr>\n
UART Baud<\/td>\nUp to 2Mbps<\/td>\n<\/tr>\n
Supply<\/td>\n3.3V or 5V<\/td>\n<\/tr>\n
Crystal<\/td>\nBuilt-in 12MHz (G suffix)<\/td>\n<\/tr>\n
Protocols<\/td>\nUART, IrDA SIR, MODEM<\/td>\n<\/tr>\n
Paquete<\/td>\nSOP-16<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • USB 2.0 full-speed compliant<\/li>\n
  • Built-in 12MHz crystal oscillator<\/li>\n
  • Full MODEM handshake signals<\/li>\n
  • IrDA SIR infrared support<\/li>\n
  • Internal 3.3V regulator<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • USB-to-RS232 adapter cables<\/li>\n
    • Arduino USB programming interface<\/li>\n
    • USB-to-UART bridge for embedded systems<\/li>\n
    • POS terminals and barcode readers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CH340G from WCH is a USB-to-UART serial converter with built-in 12MHz crystal, USB 2.0 full-speed, and multi-protocol UART in SOP-16 package. Key Specifications USB USB 2.0 Full-speed (12Mbps) UART Baud Up to 2Mbps Supply 3.3V or 5V Crystal Built-in 12MHz (G suffix) Protocols UART, IrDA SIR, MODEM Package SOP-16 Operating Temperature -40 […]<\/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":[283],"class_list":["post-7613","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-wch"],"acf":{"brief_explanation":"USB-to-UART converter, USB 2.0, built-in crystal, SOP-16","date_code":"","package_case":"SOP-16 (10.3 x 7.5 mm)","in_stock":35000,"datasheet":"http:\/\/www.wch-ic.com\/downloads\/CH340DS1_PDF.html","price":"$0.60 @ 1ku","product_introduction":"The CH340G from WCH is a USB bus converter chip providing USB-to-UART interface in SOP-16. The G suffix denotes the built-in 12MHz crystal oscillator version, eliminating external crystal need. Supports USB 2.0 full-speed with UART data transfer up to 2Mbps. Includes full MODEM handshake signals (RTS, DTR, DCD, RI, DSR, CTS) and IrDA SIR. Internal 3.3V regulator allows 5V supply with 3.3V I\/O.","working_principle":"The CH340G operates as a USB-to-UART bridge. (1) The USB transceiver handles USB 2.0 protocol on D+\/D- pins. The built-in 12MHz crystal provides USB timing reference. (2) The internal protocol engine converts between USB packets and UART format. 384-byte RX and 128-byte TX FIFOs buffer data between domains. (3) The UART outputs serial data (TXD) and receives (RXD) at configurable baud rates up to 2Mbps. MODEM signals provide hardware flow control. The internal 3.3V regulator generates I\/O voltage from 5V USB supply.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>GND<\/td>Ground<\/td><\/tr>
      2<\/td>TXD<\/td>UART transmit<\/td><\/tr>
      3<\/td>RXD<\/td>UART receive<\/td><\/tr>
      4<\/td>V3<\/td>3.3V regulator cap<\/td><\/tr>
      5<\/td>UD+<\/td>USB D+<\/td><\/tr>
      6<\/td>UD-<\/td>USB D-<\/td><\/tr>
      7<\/td>GND<\/td>Ground<\/td><\/tr>
      8<\/td>NC<\/td>No connect<\/td><\/tr>
      9<\/td>DTR#<\/td>Data Terminal Ready<\/td><\/tr>
      10<\/td>DSR#<\/td>Data Set Ready input<\/td><\/tr>
      11<\/td>RI#<\/td>Ring Indicator<\/td><\/tr>
      12<\/td>DCD#<\/td>Data Carrier Detect<\/td><\/tr>
      13<\/td>CTS#<\/td>Clear To Send<\/td><\/tr>
      14<\/td>RTS#<\/td>Request To Send<\/td><\/tr>
      15<\/td>RS232<\/td>IrDA mode select<\/td><\/tr>
      16<\/td>VCC<\/td>Power supply (5V)<\/td><\/tr><\/table>","application_scenarios":"
      • USB-to-RS232 adapter with built-in crystal<\/li>
      • Arduino USB serial programming interface<\/li>
      • USB-to-UART bridge for embedded systems<\/li>
      • POS terminals with MODEM handshake<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        CH340C<\/td>WCH<\/td>SOP-16, external crystal<\/td><\/tr>
        CH340N<\/td>WCH<\/td>SOP-8, fewer signals<\/td><\/tr>
        CP2102<\/td>Silicon Labs<\/td>USB-UART, QFN-28<\/td><\/tr>
        FT232RL<\/td>FTDI<\/td>USB-UART, SSOP-28<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/7613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=7613"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/7613\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=7613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=7613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=7613"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}