FT260Q-T - USB 2.0 to I2C/UART Bridge QFN-28 | FTDI
부품 번호: FT260Q-T ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
FT260Q-T 개요
A USB bridge controller is a type of interface IC that sits within the broader connectivity hierarchy of USB hub and bridge controllers in the semiconductor product taxonomy. Its role is to translate between a USB bus on one side and a simpler serial protocol such as I2C or UART on the other, allowing a host PC to communicate with sensors, human interface peripherals, and embedded devices without custom kernel drivers.
The defining feature of the FT260 is its USB HID class implementation: because it enumerates as a standard Human Interface Device, it works with the HID class drivers built into Windows, macOS, and Linux, eliminating the need to install vendor-specific drivers. The FT260Q is highly integrated, containing the USB 2.0 full-speed transceiver, an internal LDO regulator that generates the 3.3V reference for the USB transceiver cell, and both an I2C master/slave engine and a UART engine. According to FTDI, the part has been granted USB-IF Test-ID (TID) 40001720, confirming USB 2.0 compliance.
FTDI ships the FT260 family in two small 28-pin packages: the FT260Q in WQFN and the FT260S in TSSOP, targeting sensor and human interface peripheral applications such as touch controllers, sensor hubs, battery monitors, and industrial adapters. The -T suffix denotes tray packing (490 pieces per tray); the -R suffix denotes 2500-piece tape and reel.
In typical designs, the FT260 connects to an I2C slave device such as an IO expander or sensor through SDA/SCL lines, or to an MCU UART for serial console access. Because power is sourced from the 5V USB VBUS, no external supply is needed in most applications.
Designers should note the 4.5V to 5.5V supply constraint: when interfacing with 3.3V or 1.8V I2C devices, level shifting or the internal configuration options in the FT260 programming utilities must be considered.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: FT260Q-T — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
FT260Q-R
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
FT260Q-T 사양
| 기능 | USB to I2C/UART bridge controller |
| USB Standard | USB 2.0 Full Speed (12 Mbps) |
| USB Class | HID class (driverless) |
| USB-IF Test ID | TID 40001720 |
| Serial Interfaces | I2C, UART |
| Supply Voltage Range | 4.5 V to 5.5 V |
| 동작 온도 | -40C |
| 패키지 | 28-WQFN (5x5 mm) |
| 핀 수 | 28 |
| 실장 유형 | Surface Mount |
| Packing | Tray (490 pcs per tray) |
| Internal LDO | Yes (3.3 V for USB transceiver) |
| 카테고리 | Interface ICs - USB Bridge |
| Reel Option | FT260Q-R (2500 pcs tape and reel) |
FT260Q-T 28-wqfn (5x5 mm) 핀 구성 가이드
FT260Q-T(28-wqfn (5x5 mm) 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: FT260Q-T.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
FT260Q-T 적합 용도: 6 애플리케이션s: USB to I2C Sensor Bridge, Human Interface Peripheral (HID) Devices, Industrial UART Console and Debug Adapters, Battery Management and Monitoring Adapters, Embedded Linux / SBC Development Tooling, Point-of-Sale and Security Peripheral Interfaces.
USB to I2C Sensor Bridge
The FT260Q-T's HID-class USB 2.0 full-speed interface (12 Mbps) makes it a natural host-side bridge for I2C sensors such as accelerometers, pressure sensors, and environmental monitors. Because the device enumerates with standard HID class drivers on Windows, macOS, and Linux, a sensor dongle built around the FT260 needs no driver installation - the host application simply reads reports over the HID stack, which FTDI maps to I2C read and write transactions on the SDA/SCL pins. Typical designs power the bridge from the 5V USB VBUS (within the 4.5V to 5.5V operating range) and use the internal 3.3V LDO output for USB transceiver biasing. The MIKROE USB to I2C Click board is a shipping reference design using exactly this topology, demonstrating that an FT260 plus a socketed I2C target covers most lab and field sensor-adapters with minimal BOM.
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Human Interface Peripheral (HID) Devices
FTDI explicitly positions the 28-pin FT260Q (WQFN) and FT260S (TSSOP) as the perfect bridge to human interface peripheral applications. Because the FT260 implements the USB HID class - verified by USB-IF Test-ID (TID) 40001720 - touch controllers, bar-code scanners, card readers, and button panels can stream input data to a PC using built-in operating-system HID drivers, avoiding driver deployment and certification overhead. The full-speed 12 Mbps link comfortably supports typical HID report rates (125 Hz to 1 kHz polling), while the UART engine can interface a touch or scanner MCU. Operation down to -40C supports commercial hardware deployed in unheated environments. Designs benefit from the compact 5x5 mm WQFN footprint, which fits inside handheld enclosures and USB stick form factors with room for ESD protection on the upstream port.
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Industrial UART Console and Debug Adapters
The FT260's UART engine turns any PC USB port into a serial console for industrial equipment programming and diagnostics. Unlike driver-dependent USB UART ICs, the HID-class FT260 enumerates driverlessly on locked-down industrial PCs and Windows or Linux gateways where installing vendor drivers is restricted, a decisive advantage in factory and field-service tooling. The 12 Mbps full-speed USB link far exceeds the UART side's practical throughput, so the bridge is never the bottleneck. Power is drawn from USB VBUS at 4.5V to 5.5V, and the internal LDO handles the 3.3V transceiver supply, keeping the adapter BOM to the FT260Q-T, a crystal or internal clock configuration, USB ESD protection, and connector. Industrial temperature grading to -40C ensures reliability on unconditioned production floors and outdoor cabinets.
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Battery Management and Monitoring Adapters
Battery management ICs almost universally expose configuration and telemetry over I2C or SMBus, making the FT260Q-T an efficient PC-to-pack bridge during pack development, production test, and service diagnostics. The FT260's I2C master operates from the HID command set, so a test fixture application can poll cell voltages, temperature, and status registers through standard HID reads without driver installation on production-line PCs. Because the bridge powers from the USB port (4.5V to 5.5V) rather than the battery under test, measurements stay isolated from supply transients. The -40C industrial rating covers cold-chamber battery testing, and the 5x5 mm WQFN keeps the adapter PCB small enough to embed in handheld pack testers. Use an I2C level translator when the target pack logic runs below 3.3V.
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Embedded Linux / SBC Development Tooling
Single-board computers and embedded Linux targets running S9S12, Kinetis, or i.MX-class MCUs and MPUs frequently need a USB-to-serial or USB-to-I2C dongle for bootloader recovery, firmware flashing, and peripheral bring-up. The FT260Q-T suits this role because Linux includes native HID support - the bridge appears as an hidraw device, and open-source tooling can issue I2C transactions or open the UART without compiled vendor drivers. The 12 Mbps full-speed interface provides ample bandwidth for console traffic and flash-image transfer to moderately sized MCUs. Its 4.5V to 5.5V VBUS operation and internal 3.3V LDO simplify dongle design to a two-layer PCB. Industrial temperature support to -40C also suits bench setups in environmental test chambers where the adapter must operate alongside the device under test.
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Point-of-Sale and Security Peripheral Interfaces
POS terminals, RFID readers, and security keypads are classic HID-over-USB applications where the FT260Q-T excels: the HID class enumeration (USB-IF TID 40001720) means card data and keystrokes reach the POS host through standard OS input drivers, and the UART engine connects the bridge to the reader MCU's serial port. The 12 Mbps full-speed link handles encrypted transaction traffic with margin, and driverless operation simplifies certification on locked-down retail and kiosk platforms. The compact 28-WQFN (5x5 mm) package integrates into handheld payment terminals where board space is at a premium, while the 4.5V to 5.5V VBUS-powered design removes the need for a separate supply rail. Extended -40C operation covers unheated kiosks, drive-through lanes, and outdoor access-control installations.
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추천 제품 요약
엔지니어링 참조 데이터: FT260Q-T — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | FT260Q-R |
|---|---|---|
| Package | 28-WQFN (5x5 mm) | 28-WQFN (5x5 mm) - same |
| Brand | FTDI, Future Technology Devices International Ltd | FTDI, Future Technology Devices International Ltd - same |
| USB Standard | USB 2.0 Full Speed (12 Mbps) | USB 2.0 Full Speed (12 Mbps) |
| USB Class / Drivers | HID class (driverless) | HID class (driverless) |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Serial Interfaces | I2C, UART | I2C, UART |
| USB-IF TID | 40001720 | 40001720 |
| Packing | Tray, 490 pcs | Tape & Reel, 2500 pcs |
주요 차별점
- Driverless HID-class operation (vs FT232H)
- Dual-protocol flexibility in one small package (vs FT260S (TSSOP))
- Single-source trade-off acknowledged (vs FT260Q-R)
설계 노트
The FT260Q-T must be powered from a 4.5V to 5.5V rail, which in USB designs is the host VBUS. Add a 500 mA self-resetting polyfuse in series with VBUS per USB specification practice, plus at least 4.7uF bulk and 0.1uF ceramic decoupling at the VDD pin. The internal 3.3V LDO for the USB transceiver requires its own decoupling capacitor placed close to the pin per the FT260 datasheet layout guidance. Do not back-feed 3.3V into the LDO output node, as this can force the internal regulator and corrupt enumeration.
Route the USB D+/D- pair as a 90-ohm differential pair with matched lengths, keeping stubs under 2 mm. Although the FT260 is a full-speed (12 Mbps) device and more tolerant than Hi-Speed designs, ESD protection on D+/D- and VBUS is strongly recommended for field-plugged adapters - choose low-capacitance (<1 pF) USB ESD arrays to preserve eye margin. On the I2C side, keep SDA/SCL traces short and fit pull-up resistors sized for the bus capacitance (typically 2.2k to 4.7k at 3.3V). Use an I2C level translator when connecting to sub-3.3V slaves.
Three frequent mistakes with the FT260: (1) assuming the FT260Q (WQFN) and FT260S (TSSOP) are interchangeable - they share pin count but not footprint or pinout; verify against the DS_FT260 datasheet before layout. (2) Ordering the wrong packing code - the -T suffix means 490-piece tray, -R means 2500-piece reel; prototypes should order -T. (3) Assuming HID enumeration gives raw serial-port semantics - the host must use HID report mechanisms or FTDI's utility libraries to access I2C/UART, so plan host software accordingly.
규정 준수 정보
USB-IF compliance confirmed via Test-ID 40001720 per FTDI datasheet. RoHS/REACH status not stated in the retrieved web data; confirm on the FTDI product page before specification.
