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Small USB adapter with isolated serial connector, green circuit board visible

Ruth's sister

Ruth's sister 3.3v 5v TTL UART Isolated Serial Converter Adapter

SKU CH-HQ0K-RC2G9

Converts USB to isolated 3.3v and 5v TTL UART serial signals for Windows 7, 8 and 10

  • FTDI chip provides reliable USB-to-serial conversion
  • Galvanic isolation protects connected equipment from ground loops
  • Supports both 3.3 V and 5 V logic levels
  • Compatible with Windows 7, 8 and 10

Isolated USB-to-TTL Serial Adapter

The Ruth's sister adapter uses an FTDI chip to convert a USB port into an isolated 3.3 v and 5 v TTL UART interface. It provides electrical isolation between the host computer and the target device. The adapter supports Windows 7, Windows 8 and Windows 10 operating systems. It is intended for internal cable connections in development or debugging setups.

Engineers needing galvanic isolation

This suit developers who require protected communication with 3.3 v or 5 v microcontrollers, sensors or embedded boards. It is not for users who need a non-isolated converter or an interface for higher-voltage serial standards. Buyers requiring driver support beyond the listed Windows versions should verify compatibility before purchase.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the USB interface cap the baud rate in practice?

The FTDI chip handles the USB-to-serial translation; practical throughput follows the USB 2.0 bulk-endpoint limits of the host controller.

What does the adapter need to fit inside a case?

The board connects to a standard internal USB header and provides a 10-pin TTL header for 3.3 V or 5 V logic levels.

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