USB2514B-I/M2

Controllers Overview

The USB2514B-I/M2 is a low-power, configurable multi-transaction translator hub controller IC designed for embedded USB solutions. It provides four downstream ports compliant with the USB 2.0 specification and supports battery charging features. The device operates on a single external 3.3 V supply source, utilizing internal regulators to provide 1.2 V core voltage. It supports data transfer rates up to 480 Mb/s and functions in both self-powered and bus-powered modes. The component is housed in a 36-pin SQFN package measuring 6x6 mm and is rated for an extended commercial operating temperature range of 0°C to +85°C.

Controllers Feature Summary

• MultiTRAK technology implements dedicated transaction translators for each port to maintain consistent full-speed throughput.
• PortMap feature allows flexible port mapping and disable sequencing to support various platform designs.
• PortSwap enables programmable differential-pair pin locations to simplify PCB routing and signal alignment.
• PHYBoost provides four programmable levels of USB signal drive strength to recover signal integrity.

Controllers Applications

• LCD monitors and TVs
• Multi-function USB peripherals
• PC motherboards
• Set-top boxes, DVD players, DVR/PVR
• Printers and scanners

Controllers Procurement Notes

Verify that the specific part number suffix matches the required temperature grade and package type. Confirm configuration requirements against the datasheet, as strapping options or external I2C EEPROMs may be necessary for custom VID, PID, or device ID settings. Ensure power supply design accommodates the specified current limits and over-current protection thresholds.

Controllers Selection Notes

Select this model when four downstream ports are required within a compact footprint. Choose the -I suffix variant if operation within the industrial temperature range of -40°C to +85°C is necessary, as the standard B suffix covers 0°C to +85°C. Verify compatibility with existing PCB layouts, as the device is footprint compatible with legacy USB251x/xi/xA/xAi products for direct replacement.

Controllers Part Context

This component belongs to the Microchip USB251xB/xBi family of hub controllers. The '4' in the designation indicates four available downstream ports, while the 'B' signifies support for battery charging protocols. These devices are engineered for high performance and low power consumption, serving as central connectivity hubs in embedded systems requiring multiple peripheral connections.

Controllers Replacement Considerations

The USB2514B is a direct drop-in replacement for the USB2514. Both share identical pinouts and physical dimensions, allowing for cost savings through the reuse of existing PCB components. Designers should verify that register defaults and product IDs align with system requirements when swapping between these variants.

Controllers FAQ

How does the MultiTRAK technology benefit data throughput?

MultiTRAK technology implements a dedicated transaction translator for each downstream port. This architecture helps maintain consistent full-speed data throughput regardless of the number of active downstream connections.

What configuration methods are supported by the USB2514B?

The device supports configuration via hardware strapping pins for default settings. Alternatively, it can be configured using an external serial I2C EEPROM or by acting as an SMBus slave device to a microcontroller.

Does the USB2514B support battery charging specifications?

Yes, the USB2514B supports the USB Battery Charging Specification Revision 1.1. It allows individual downstream ports to be enabled for charging, supporting currents up to 1.5 amps per port when properly configured.