TUSB4041IPAPRQ1
TUSB4041IPAPRQ1 - 4-Port USB 2.0 Hub, AEC-Q100 | Texas Instruments
The Texas Instruments TUSB4041IPAPRQ1 is an automotive-grade 4-port high-speed USB 2.0 hub controller supporting 480-Mbps upstream and downstream signaling in a 64-pin HTQFP (PAP) 10x10 mm package with an exposed thermal pad. The -Q1 suffix denotes AEC-Q100 qualification, making it suitable for in-vehicle USB expansion where reliability across -40C to +85C is mandatory. It integrates USB 2.0 transceivers, a serial-interface engine, hub repeater, and per-port power control with battery-charge support, allowing direct attachment to automotive head units, IVI systems, and telematics modules.
A USB 2.0 hub is a compliant USB device class that expands one upstream port into multiple downstream ports while managing enumeration, power distribution, and transaction translation across a tiered-star topology. The hub sits between a host controller (xHCI/eHCI) and downstream peripherals; the hub repeater manages connectivity, while the hub controller handles split transactions and descriptor management. The TUSB4041I-Q1 family is positioned as an automotive TUSB2.0 hub silicon in TI's broader portfolio of USB interface ICs, falling under the Interface ICs > Audio/Video and broader serializer-deserializer hierarchy of signal-conditioning and protocol-bridging devices.
Key features include support for downstream battery charging (DCP, CDP, SDP per BC1.2-like behavior), pin-strap configuration, OTP ROM customization, I2C/SMBus configuration interface, integrated 5V-to-3.3V LDO, and per-port overcurrent protection plus power-switch control outputs. Per-port event indicators are available via an interrupt output, and the part provides both full-speed (12 Mbps) and high-speed (480 Mbps) signaling upstream while supporting low-/full-/high-speed downstream traffic.
Architecture-wise, the device combines an ULPI-style internal PHY layer with a hardwired hub controller core. Pin-strap pins allow boot-time selection of VID/PID, removable/non-removable port mapping, and battery-charging mode without external EEPROM, while an optional I2C EEPROM, OTP ROM, or SMBus target interface enables field-customizable configuration. The PAP package's exposed pad offers a low-junction-to-board thermal path, important under hood or behind-dash operating conditions.
Typical automotive applications include infotainment USB expansion (rear-seat entertainment, smartphone projection), telematics control units, body and cluster controllers that expose diagnostic or media ports, and in-cabin USB charging outlets requiring BC1.2-class behavior. Industrial variants of the same die (TUSB4041I, no -Q1) target factory USB aggregation and USB-isolated medical-cart hubs.
When designing with this part, allocate a generous copper pour under the exposed pad, keep the 24 MHz crystal traces short, and use a 5V-tolerant current-limited power switch per downstream port. The -Q1 qualification grade means PPAP and IMDS data are available from TI on request.
USD $5.45
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