USB2514i

General Features
`Hub Controller IC with 4 downstream ports
`High-performance multiple transaction translator MultiTRAK™ Technology Provides one transaction translator per port
`Enhanced OEM configuration options available through either a single serial i2C EEPROM, or SMBus Slave Port
`36-pin (6x6mm) and 48-Pin (7x7mm) QFN lead-free, RoHS compliant packages
`Footprint compatible with USB2513i and USB2512i (36-pin QFN) to provide designers with flexibility regarding the quantity of USB expansion ports utilized without redesign
`Supports industrial temperature range of -40 to 85
Hardware Features
`Low power operation
`Full Power Management with individual or ganged power control of each downstream port
`On-chip Power On Reset (POR)
`Internal 1.8V Voltage Regulator
`Fully integrated USB termination and Pull-up/Pulldown resistors
`On Board 24MHz Crystal Driver, Resonator or External 24/48MHz clock input
`USB host/device speed indicator. Per-port 3-color LED drivers that indicate the speed of USB host and device connection - hi-speed (480 Mbps), full-speed (12 Mbps), low-speed (1.5 Mbps) (48-pin QFN)
`Enhanced EMI rejection and ESD protection performance
`Customize Vendor ID, Product ID, and Device ID
`Select whether the hub is part of a compound device (When any downstream port is permanently hardwired to a USB peripheral device, the hub is part of a compound device)
`Flexible port mapping and disable sequence. Ports can be disabled/reordered in any order to support multiple product SKUs. Hub will automatically reorder the remaining ports to match the Host controller's numbering scheme
`Programmable USB differential-pair pin location
`Ease PCB layout by aligning USB signal lines directly to connectors
`Programmable USB signal drive strength. Recover USB signal integrity due to compromised system environment using 4-level driving strength resolution
`Select the presence of a permanently hardwired USB peripheral device on a port by port basis
`Configure the delay time for filtering the over-current sense inputs
`Configure the delay time for turning on downstream port power
`Configure the polarity of downstream port power control signals
`Indicate the maximum current that the 4-port hub consumes from the USB upstream port
`Indicate the maximum current required for the hub controller
`Supports Custom String Descriptor up to 31 characters in length for:
Product String
Manufacturer String
Serial Number String
`Pin Selectable Options for Default Configuration
- Select Downstream Ports as Non-Removable Ports
- Select Downstream Ports as Disabled Ports
- Select Downstream Port Power Control and Over-
Current Detection on a Ganged or Individual Basis
- Select Downstream Port Power Control Polarity
- Select USB Signal Drive Strength
- Select USB Differential Pair Pin location
- Select on-chip or off-chip voltage regulator mode

Note: Stresses above the specified parameters could cause permanent damage to the device. This is a stress rating only and functional operation of the device at any condition above those indicated in the operation sections of this specification is not implied. When powering this device from laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. When this possibility exists, it is suggested that a clamp circuit be used.

The USB2514i  Hub is low power, OEM configurable, MTT (multi transaction translator) hub controller IC with 4 downstream ports for embedded USB solutions. The 4-port hub is fully compliant with the USB 2.0 Specification and will attach to an upstream port as a Full-Speed Hub or as a Full-/High-Speed Hub. The 4- Port Hub supports Low-Speed, Full-Speed, and High- Speed (if operating as a High-Speed Hub) downstream devices on all of the enabled downstream ports.