STUSB02EQR

Drivers, Receivers, Transceivers Overview

The STUSB02EQR is a single-chip USB transceiver supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) data transmission. It operates from a VBUS supply of 4V to 5.5V and features an integrated 5V-to-3.3V regulator for direct bus powering. The system I/O interface supply voltage (VIF) ranges from 1.6V to 3.6V, enabling compatibility with portable systems. ESD protection provides ±14kV on D+/D– lines and ±5kV on VBUS. The device is housed in a QFN16 package measuring 3mm x 3mm.

Drivers, Receivers, Transceivers Feature Summary

• Integrated 5V to 3.3V regulator allows direct powering from the VBUS line without external power sequencing.
• Supports sharing mode when VBUS is absent, allowing D+/D– lines to be shared with other serial protocols.
• Includes software-controlled re-enumeration and a dedicated VBUS detector output for connection status monitoring.

Drivers, Receivers, Transceivers Applications

• Portable devices such as PDAs and MP3 players
• Cell phones requiring lower system voltages
• USB peripherals needing direct VBUS operation

Drivers, Receivers, Transceivers Procurement Notes

Verify the component against the official STMicroelectronics datasheet ECOPACK specifications. Confirm the QFN16 package dimensions match the required PCB footprint. Ensure handling precautions are followed due to ESD sensitivity ratings. Check that the ordering suffix aligns with the reel packaging quantity specified by the manufacturer.

Drivers, Receivers, Transceivers Selection Notes

Select this transceiver when the host controller operates at system voltages as low as 1.6V while interfacing with standard USB bus levels. The integrated regulator simplifies design by eliminating the need for separate voltage conversion circuitry. Verify that the application requires only full-speed or low-speed capabilities rather than high-speed transfer rates.

Drivers, Receivers, Transceivers Part Context

The STUSB02EQR belongs to the STUSB02E series of USB transceivers manufactured by STMicroelectronics. This series focuses on providing robust connectivity solutions for mobile and battery-powered electronics where power efficiency and minimal component count are critical design constraints.

Drivers, Receivers, Transceivers Replacement Considerations

STUSB03EQR

Drivers, Receivers, Transceivers FAQ

How does the device handle speed selection?

Speed selection is controlled via the SPD pin and a 1.5kΩ pull-up resistor connected to the VPU pin. A logic HIGH on SPD enables full-speed edge rates, while LOW enables low-speed edge rates.

What is the function of the CON pin?

The CONNECT (CON) input controls the state of the internal switch for the VPU pin. When CON is low, VPU is high impedance; when high, VPU outputs 3.3V to enable the pull-up resistor for speed detection.

Can the D+ and D- lines be used for other protocols?

Yes, the transceiver supports a sharing mode when VBUS is not present, allowing the differential data lines to be utilized by other serial communication protocols simultaneously.