https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL21619_%E2%80%93_USB_TO_4CH_TTL%2FenWSAL21619 – USB TO 4CH TTL/en - Versionsgeschichte2026-10-23T22:04:04ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL21619_%E2%80%93_USB_TO_4CH_TTL/en&diff=2424&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-06T06:04:24Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
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== Summary ==<br />
Technical overview of the Waveshare industrial USB to 4CH TTL converter (item WSAL21619): four independent UART channels based on the CH344 chip, with hardware flow control and support for Windows, Linux, macOS, and Android.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL21619 WSAL21619 – Industrial USB TO 4CH TTL Converter, USB To UART, Multi Protection &amp; Systems Support]<br />
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== Technical overview ==<br />
* The module is an industrial USB-to-TTL converter providing four asynchronous serial ports (UART0–3).<br />
* Each channel exposes TXD, RXD, CTS, and RTS pins, enabling both 3-wire and 5-wire serial communication.<br />
* Hardware flow control via CTSx/RTSx can be enabled or disabled globally through the CFG pin (default: disabled), or configured per channel using the VCP vendor driver.<br />
* Power supply: 5 V; operating current approximately 32 mA.<br />
* Supported baud rate range: 1200 to 460800 bps.<br />
* UART TTL output level: selectable between 3.3 V and 5 V (adjustable).<br />
* Operating temperature range: −40 °C to 85 °C.<br />
* Physical dimensions: 86 mm × 47.8 mm × 27.6 mm.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
ls /dev/tty*<br />
minicom -D /dev/ttyACM0<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* The source contains unfilled placeholders such as &#123;&#123;&#123;name2&#125;&#125;&#125; and &#123;&#123;&#123;userDefinedInfo&#125;&#125;&#125;; these values must be manually verified and completed before publication.<br />
* To enable CDC hardware flow control, the CFG pin must be connected to EN – verify exact pinout in the datasheet.<br />
* Installing the VCP driver on Windows requires downloading and installing a vendor driver; on older systems (e.g., Windows 7) a digital signature warning may appear and can be resolved with a driver repair tool.<br />
* Note: inferior knock-offs of this item circulate in the market without testing; provenance and authenticity should be verified before deployment.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/USB_TO_4CH_TTL USB TO 4CH TTL - Waveshare Wiki]<br />
* Source revision: 108915<br />
* Captured: 2026-09-03T03:03:38+00:00<br />
* SHA-256: <code>1ab67bfbaa0498b2b3e028e718a1ecffb358b3ebc9a2599b894e9c14f5b055e3</code></div>JWTechPublisher