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STMicroelectronics STUSB03EQR — Sensors & Transducers

STUSB03EQR USB 2.0 Transceiver

MPNSTUSB03EQR
End of Life

STMicroelectronics STUSB03EQR, USB 2.0 half-duplex transceiver, 12 Mbps data rate, 4V to 5.5V supply, industrial temperature range -40°C to 85°C, 16-QFN (3x3 mm) package, ROHS3 compliant, active lifecycle.

$2.05Ref. price · indicative, final on quote
STMicroelectronics STUSB03EQR datasheet (PDF)
Packaging16-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STUSB03EQR specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Voltage4V ~ 5.5V
ProtocolUSB 2.0
Operating temperature-40°C ~ 85°C
DuplexHalf
PackageTape & Reel (TR); Cut Tape (CT)
Data rate12Mbps
Case16-VFQFN Exposed Pad
Receiver hysteresis100 mV
Number of drivers (Receivers)1/1

Product details

USB 2.0 full-speed transceiver for industrial interfaces

The STUSB03EQR is a USB 2.0 half-duplex transceiver from STMicroelectronics, supporting the 12 Mbps full-speed data rate. The supply range of 4V to 5.5V allows direct operation from a standard 5V USB bus or a regulated 5V rail, with the receiver hysteresis of 100 mV providing noise immunity on the differential lines.

Supply rail and logic-level fit

The 4V minimum supply means the STUSB03EQR is not designed for 3.3V logic systems without level translation. If your microcontroller runs on 3.3V I/O, you will need a level shifter between the MCU and the transceiver's interface pins.

Frequently asked questions

Does STUSB03EQR work with 5V logic or does it require level shifting?

The STUSB03EQR operates from a 4V to 5.5V supply, so it works directly with 5V logic. For 3.3V microcontrollers, external level shifters are needed on the interface pins.