FT230XS-U - USB to UART Bridge, 3MBd, SSOP-16 | FTDI
Teilenummer: FT230XS-U ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.65 | $3,65 |
| 10 | $3.28 | $32,80 |
| 100 | $2.85 | $285,00 |
| 500 | $2.42 | $1.210,00 |
| 1.000 | $2.1 | $2.100,00 |
| 3.000 | $1.78 | $5.340,00 |
FT230XS-U Übersicht
A USB-to-UART bridge is a mixed-signal interface IC that converts USB differential signalling to a TTL/CMOS asynchronous serial stream, eliminating the need for a traditional RS-232 transceiver or MCU-based USB stack. The FT230X family sits in the broader USB-to-serial category alongside USB-to-SPI and USB-to-I2C bridges, providing the simplest serial-only path for adding USB to embedded designs where PCB real estate is constrained and a 4-wire UART is sufficient.
The FT230XS-U operates from a 4.35 V to 5.25 V internal LDO-derived supply, presents a 512-byte buffer, and supports 7/8-bit data, 1/2 stop bits, odd/even/mark/space/no parity. It includes configurable CBUS pins (GPIO, Tx/Rx LED drive, clock output, sleep wake-up), integrated 3.3 V LDO output for external logic, and full USB suspend/resume signalling. Internal EEPROM stores VID, PID, product string, serial number and CBUS configuration.
Typical applications include USB-to-RS232 adapter dongles, debug console interfaces for microcontrollers, USB firmware updaters, point-of-sale terminals, and industrial sensor nodes. The FT230XS-U is the SSOP-16 variant; the FT230XQ is the same die in QFN-16 for ultra-miniature boards.
Design consideration: the part requires a 12 MHz external crystal or resonator on the crystal oscillator pins, a USB D+/D- 27 ohm series resistor pair, and VBUS decoupling. Drivers are available for Windows, macOS, Linux and Android as a CDC ACM device.
This page combines distributor pricing, drop-in alternatives, and PCB-level design notes not collected in a single place on the manufacturer datasheet, supporting component selection and BOM risk reduction.
Drop-in-Alternativen für FT230XS-U – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit FT230XS-U (gleiche Bauform und Footprint) – abweichend in Driver Support, Function, Package, UART Data Rate.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
FT230XS-R
✅ Drop-In✓ Auf Lager
$2.45 / Stück
Datenblatt ansehen →FT231XS-U
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
FT234XD-R
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
FT230XS-U Technische Daten
| Funktion | USB to UART Bridge |
| USB Standard | USB 2.0 Full Speed (12 Mbps) |
| UART Data Rate | Up to 3 MBaud |
| Supply Voltage (VCC) | 4.35 V to 5.25 V |
| Typical Operating Current | 8 mA |
| UART Channels | 1 |
| FIFO Buffer Size | 512 byte |
| Internal 3.3 V LDO Output | Yes |
| Betriebstemperaturbereich | -40 C to +85 C |
| Gehäuse | 16-SSOP (SOP-16, 5.30 mm body) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
| Driver Support | Windows, macOS, Linux, Android (CDC ACM / D2XX) |
| CBUS Configurable Pins | 4 |
FT230XS-U Pin-Konfiguration
| Pin 1 | TXD — UART Transmit Data output |
| Pin 2 | DTR — Data Terminal Ready control output |
| Pin 3 | RTS — Request To Send control output |
| Pin 4 | VCCIO — UART logic-level supply (1.8 V / 2.5 V / 3.3 V / 5 V) |
| Pin 5 | RXD — UART Receive Data input |
| Pin 6 | RI — Ring Indicator control input |
| Pin 7 | GND — Ground |
| Pin 8 | DCD — Data Carrier Detect control input |
| Pin 9 | DSR — Data Set Ready control input |
| Pin 10 | CTS — Clear To Send control input |
| Pin 11 | CBUS4 — Configurable CBUS pin 4 |
| Pin 12 | CBUS2 — Configurable CBUS pin 2 |
| Pin 13 | CBUS3 — Configurable CBUS pin 3 |
| Pin 14 | CBUS1 — Configurable CBUS pin 1 |
| Pin 15 | USBDP — USB Data Plus (D+) line |
| Pin 16 | USBDM — USB Data Minus (D-) line |
Typische Anwendungen
FT230XS-U ist geeignet für 6 Anwendungs: USB-to-UART Debug Console for MCUs, USB-to-RS232 Adapter Dongle, Industrial Sensor Node with USB Service Port, POS Terminal and Receipt Printer Interface, USB Firmware Updater for IoT Devices, Audio Device Configuration Interface.
USB-to-UART Debug Console for MCUs
The FT230XS-U is a textbook fit for USB-to-UART debug-console bridges between a host PC and an embedded MCU such as an STM32, ESP32, or RP2040. Its 3 MBaud ceiling comfortably covers 921600 baud logging without bottlenecking, while the configurable VCCIO pin lets the UART pins match the MCU's native 1.8 V or 3.3 V rail and eliminates an external TXS/TXB level shifter. The integrated 3.3 V LDO can power the MCU's core rail if total draw stays below 50 mA. CBUS pins can be remapped to drive TX/RX activity LEDs or assert wake-up events on USB resume, which is invaluable when debugging low-power sleep modes. The part's CDC ACM and D2XX dual-mode driver support means the same firmware console works on Windows, macOS, Linux, and Chromebook without modification.
Empfohlen
USB-to-RS232 Adapter Dongle
The FT230XS-U is the core of classic USB-to-RS232 adapter cables that replace legacy DB-9 COM ports on laptops. Paired with a level-shifting transceiver such as the MAX3232 or SP3232, the FT230XS-U delivers full RS-232-compliant +/- 5 V swings from the 3.3 V UART lines, supporting data rates up to 250 kBaud in compliance with the TIA-232 spec. Its 8 mA active current keeps the dongle inside the USB 2.0 unconfigured-device 100 mA power budget with headroom for the RS-232 transceiver. The CBUS clock-output function can drive an external baud-rate reference or LED indicator. Industrial diagnostic equipment, CNC controllers, and legacy PLCs all benefit from the FT230XS-U's robust driver ecosystem that works out-of-the-box on modern OS releases.
Empfohlen
Industrial Sensor Node with USB Service Port
For factory-floor sensor nodes that need a USB service port for firmware updates and log retrieval, the FT230XS-U offers an industrial-grade -40 C to +85 C operating range and integrated ESD protection on the USB D+/D- lines. Designers wire the FT230XS-U as the USB slave on the enclosure, with its UART port routed to the host MCU's bootloader entry pin. The 512-byte FIFO allows the host MCU to flush log bursts during interrupts without overrun. CBUS pins can be reassigned as power-on reset triggers or as a discrete wake event back to the host MCU. The internal 3V3OUT 50 mA LDO powers low-current housekeeping rails without adding a second regulator to the BOM. RoHS compliance and conflict-minerals conformity simplify EU export paperwork.
Empfohlen
POS Terminal and Receipt Printer Interface
Point-of-sale terminals and fiscal printers require a reliable USB-to-serial bridge for receipt printers, barcode scanners, and customer displays. The FT230XS-U's 3 MBaud ceiling easily handles high-speed fiscal printer bursts and concurrent scanner input over the same UART. Its CDC ACM mode lets the POS application treat the bridge as a virtual COM port, simplifying the software stack, while the D2XX mode supports direct FIFO access for high-throughput receipt jobs. The industrial -40 C to +85 C rating survives harsh retail and kitchen environments. Optional VCCIO down to 1.8 V lets the FT230XS-U interface directly with modern ARM Cortex-A application processors without glue logic. FTDI's long-term driver support across Windows POSReady and embedded Linux distributions keeps legacy POS platforms supported.
Empfohlen
USB Firmware Updater for IoT Devices
The FT230XS-U is a common BOM choice for factory programming fixtures that need to flash firmware into IoT devices over their UART bootloader pins. The 3 MBaud ceiling lets a 1 MB firmware image transfer in roughly 3 seconds, slashing production line cycle time. Its VCCIO flexibility lets the same fixture handle 1.8 V, 3.3 V, and 5 V target devices by switching a jumper to the appropriate logic rail. The internal 3V3OUT can power low-dim IoT targets during flashing if the production cell lacks a bench supply. FTDI's signed Windows drivers and signed macOS bundles keep the fixture compliant with secure-boot OS policies. The 16-SSOP package is hand-solderable for low-volume fixtures that need reworkability.
Empfohlen
Audio Device Configuration Interface
Professional audio equipment such as digital mixers, stage racks, and powered speakers often exposes a hidden USB service port for factory calibration, firmware updates, and remote diagnostics. The FT230XS-U's 3 MBaud ceiling supports fast DSP image load audio firmware, while its 16-SSOP footprint fits behind an internal service-panel access door. The CBUS sleep-wakeup pin can wake the host MCU from deep-sleep when the service cable is plugged in, preserving battery life on portable units. The FT230XS-U's robust driver availability across Windows 10/11, macOS Sonoma, and Ubuntu 24.04 means audio production staff do not need to install exotic drivers in the field. AEC-Q100 is not required for studio equipment, so the standard part suffices.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für FT230XS-U – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | FT230XS-R | FT231XS-U | FT234XD-R |
|---|---|---|---|---|
| Brand | FTDI | FTDI | FTDI | FTDI |
| Package | 16-SSOP | 16-SSOP - same | 16-SSOP - same | 16-SSOP - same |
| UART Data Rate | 3 MBaud | 3 MBaud | 3 MBaud | 1 MBaud |
| USB Standard | USB 2.0 Full Speed | USB 2.0 Full Speed | USB 2.0 Full Speed | USB 2.0 Full Speed |
| Supply Voltage | 4.35 V to 5.25 V | 4.35 V to 5.25 V | 4.35 V to 5.25 V | 4.35 V to 5.25 V |
| FIFO Buffer | 512 byte | 512 byte | 512 byte | 256 byte |
| CBUS Pins | 4 | 4 | 5 (enhanced) | 1 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Wichtigste Unterscheidungsmerkmale
- 3 MBaud UART ceiling, highest in the FT-X basic UART family (vs. FT234XD-R)
- Larger 512-byte FIFO buffer versus reduced-buffer FT-X parts (vs. FT234XD-R)
- Four configurable CBUS pins versus one in FT234XD (vs. FT234XD-R)
Designhinweise
Place a 27 ohm series resistor on each of the USB D+ and D- lines between the FT230XS-U and the USB connector to damp the 90 ohm differential impedance edge rates per USB 2.0 specification. Keep the D+/D- traces as a 90 ohm differential pair, length-matched within 2 mm, with no stubs. Route VBUS directly to the connector VBUS pin with a 10 uF bulk capacitor and a 100 nF high-frequency bypass on the FT230XS-U VCC pin within 5 mm of the IC body.
The 12 MHz crystal on XI/XO (pins 14/15 per SSOP-16 pinout) must be within 5 mm of the IC, with its load capacitors grounded to a common ground via short traces. Estimated: at 12 MHz fundamental mode with 18 pF load capacitance, total loop area should be under 25 mm squared to stay below the USB Full Speed jitter budget. Keep the crystal traces away from the USB D+/D- pair to avoid coupling jitter into the USB signal.
The internal 3.3 V LDO output (3V3OUT pin) can source up to 50 mA for external logic. Estimated: at 50 mA draw the LDO drops approximately 0.3 V from VCC minus quiescent overhead. Add a 100 nF decoupling cap on 3V3OUT within 3 mm of the pin. If the target application draws more than 50 mA, do not overload 3V3OUT - add an external 3.3 V regulator instead. The CBUS pins default to high-impedance input; configure them via the internal EEPROM after first USB enumeration.
Do not forget to install the FTDI VCP or D2XX driver on the host before plugging in. On Windows 10/11, the FT230XS-U does NOT enumerate as a CDC ACM device automatically because it uses FTDI's vendor VID/PID, not the Microsoft USB-serial class. On Linux and macOS, the FTDI driver is included in the kernel since 2009. Common PCB mistakes include: omitting the VCCIO bypass cap, tying VCCIO to 5 V while the MCU is 3.3 V (causes long-term damage), and forgetting the 4.7 kohm pull-up on the USB D+ line for full-speed device detection.
The UART TXD output rise/fall time is approximately 5 ns into a 30 pF load, which is clean for cables up to 1 metre. Beyond 1 metre, add a series 100 ohm resistor at the TXD pin to damp reflections. The CBUS pins are limited to 4 mA source/sink, sufficient only for LED drive or logic-level signalling; do not use CBUS to switch relays or power MOSFETs directly. If the application needs RS-232 compliant +/- 5 V swings, add an external RS-232 transceiver such as the SP3232 between the FT230XS-U UART pins and the DB-9 connector.
Compliance-Informationen
RoHS and REACH SVHC declarations available from FTDI on request. FT230XS-U is lead-free and halogen-free per FTDI material declaration. Not AEC-Q100 qualified; for automotive-grade USB bridges consider FT232HL-Q1 (Hi-Speed) with AEC-Q100. Conflict-minerals declaration per Section 315CPT of the Dodd-Frank Act on file at FTDI.
