The TUSB2551 is a single-chip transceiver that complies with the physical-layer specifications of universal serial bus (USB) 2.0. The device supports both full-speed (12-Mbit/s) and low-speed (1.5-Mbit/s) operation. The TUSB2551 delivers superior edge rate control, producing crisper eye diagrams, which ease the task of passing USB compliance testing. A dual supply-voltage operation allows the TUSB2551 to operate at lower input supply voltages (VCC = 1.65V), increasing power efficiency. The device also features low power consumption, making it ideal for portable equipment.
The TUSB2551 is a single‑chip USB 2.0 transceiver that supports both full‑speed (12 Mbit/s) and low‑speed (1.5 Mbit/s) operation. It offers dual supply‑voltage operation, allowing the I/O interface to be referenced to a voltage as low as 1.6 V while still being powered from the USB VBUS.
The document details terminal functions, power‑supply configurations (Normal, Disable, Sharing), absolute maximum ratings, recommended operating conditions, and extensive DC electrical characteristics. It also includes land‑pattern data and an important notice about product warranties and usage restrictions.
| Supply voltage (internal regulator) typical | 5 V (range 4 V – 5.25 V) |
|---|---|
| Supply voltage (regulator bypass) typical | 3.3 V (range 3 V – 3.6 V) |
| VBUS (V/O) supply voltage range | 1.65 V – 3.6 V |