Texas Instruments provides a recommended PCB layout in the TUSB1142IRNQR evaluation module documentation, which includes guidelines for component placement, routing, and grounding to minimize electromagnetic interference (EMI) and ensure reliable operation.
The TUSB1142IRNQR can be configured for different USB speeds using the USB_SPEED_SEL pin. This pin can be tied to VCC or GND to select between high-speed (HS) and full-speed (FS) modes. Additionally, the device can be configured for low-speed (LS) mode by tying the USB_SPEED_SEL pin to VCC and the LS_SEL pin to GND.
The TUSB1142IRNQR supports cable lengths up to 3 meters for high-speed (HS) mode and up to 5 meters for full-speed (FS) mode, assuming a good quality cable with minimal signal attenuation.
The TUSB1142IRNQR has an internal overcurrent protection (OCP) feature that can be enabled by tying the OCP_EN pin to VCC. The device will then limit the output current to a safe level in the event of an overcurrent condition. Additionally, an external OCP circuit can be implemented using a current sense resistor and a comparator or a dedicated OCP IC.
The power consumption of the TUSB1142IRNQR varies depending on the operating mode. In high-speed (HS) mode, the typical power consumption is around 150 mA. In full-speed (FS) mode, the typical power consumption is around 50 mA. In suspend mode, the typical power consumption is around 1 mA.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
