USB251x Family Product Brochure - (PDF File Size=540K)
	Hardware Features
	OEM Selectable Features
	USB251x Selector Guide
	Ordering Information
	Data Sheet, Application Notes, Drivers and Design Tools
	SMSC Delivers Industry's Smallest Hi-Speed USB 2.0 Hub and Most Full-Featured Transceiver Solutions
	Go to Hi-Speed USB Page

General Description

SMSC's USB251x is a family of versatile, cost-effective, and power-efficient USB 2.0 hub controllers. Leveraging SMSC's' innovative MultiTRAK™ technology that delivers industry-leading data throughput in mixed-speed USB environments, the USB251x family is a USB port expansion solution for applications that demand low power and small footprint without compromising on performance. Well-suited for consumer and mobile applications, all members of the USB251x family are available in space-saving packages. The common 36-pin package shared among the 2/3/4 port hub controllers measures only 6x6 mm and provides an ultra small footprint for space-constrained designs while allowing scalable port expansion from two to four ports. The 7-port USB2517 comes in a space-efficient 9x9 mm 64-pin package. Over 30 programmable features including SMSC's unique PortMap, PortSwap, TrueSpeed and PHYBoost are designed to aid system designers in simplifying PCB layout and optimizing bill-of-material cost. For applications requiring extended operating temperature range, the USB251x i-temp series is designed to meet -40° to 85°C industrial temperature requirements.

Hardware Features

	MultiTRAK - per-port Transaction Translator for best data throughput in mixed-speed USB environment
	Low power operation
	Full power management with individual or ganged configuration
	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 or external 24 MHz clock input
	TrueSpeed - USB host/device speed indicator; per-port 3-color LED drivers that indicate the speed of USB host and device connection - high-speed (480 Mbps), full-speed (12 Mbps), low-speed (1.5 Mbps)
	Enhanced EMI rejection and ESD protection

OEM Selectable Features

	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)
	PortMap - 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
	PortSwap - Programmable USB differential-pair pin location; eases PCB layout by aligning USB signal lines directly to connectors
	PHYBoost - Programmable USB signal drive strength; recovers 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 hub controller 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

Target Applications

	Mobile PC Docking Stations
	LCD Monitors/TVs
	PC Motherboards
	Gaming Consoles
	Multi-Function Printers
	Cable/DSL Modems
	Set-Top Boxes
	DVD/CD-ROM/DVR
	HDD Enclosures
	Keyboards
	KVM Switches
	Server Front Panels
	Point-of-Sale (POS) Systems
	IP Telephony
	Automobile/Home Audio Systems
	Thin Client Terminals

USB251x Selector Guide

Feature	USB2512A	USB2512Ai	USB2513	USB2513i	USB2514	USB2514i	USB2517	USB2517i
Number of Downstream Ports	2	2	3	3	4	4	7	7
MultiTRAK Technology
PortMap
PortSwap
TrueSpeed
PHYBoost
I2C/SMBus
Industrial Temp (-40° to 85° C)
36 QFN (6x6 mm)
48 QFN (7x7 mm)
64 QFN (9x9 mm)
RoHS Compliant

Ordering Information

*Note: Not recommended for new designs.

USB251x Data Sheet, Application Notes,
Drivers and Design Tools

Description	File Name	File Size	Date
USB251x Data Sheet	251x.pdf	1687K	3/11/09
Evaluation Boards
EVB-USB2512Q36-BAS (USB2512/USB2512i) EVB-USB2513Q36-BAS (USB2513/USB2513i) EVB-USB2514Q36-BAS (USB2514/USB2514i)
Schematic, ORCAD 7.2     Schematic, PDF     Bill of Materials, PDF     Users Guide, PDF     Gerber Files	evb2514q36bas.dsn evb2514q36bas.pdf evb2514q36basbom.pdf evb2514q36basuser.pdf evb2514q36basger.zip	1366K 65K 21K 163K 773K	1/29/09 1/29/09 4/7/08 10/22/08 7/23/08
EVB-USB2513QFN48 (USB2513/USB2513i) EVB-USB2514QFN48 (USB2514/USB2514i)
Schematic, ORCAD 7.2     Schematic, PDF     Bill of Materials, PDF     Users Guide, PDF     Gerber Files	evb2514qfn48.dsn evb2514qfn48.pdf evb2514qfn48bom.pdf evb2514qfn48user.pdf evb2514qfn48ger.zip	1391K 73K 24K 177K 526K	2/19/08 2/19/08 1/26/07 6/26/07 1/26/07
EVB-USB2517
Schematic, ORCAD 7.2     Schematic, PDF     Bill of Materials, PDF     Users Guide, PDF     Gerber Files	evb2517sch.dsn evb2517sch.pdf evb2517bom.pdf evb2517user.pdf evb2517ger.zip	1391K 64K 18K 465K 552K	9/29/08 9/29/08 9/29/08 1/7/09 9/29/08
Application Notes
Application Note 15-17: PCB Layout Guide for USB2514	an1517.pdf	394K	2/9/07
Application Note 16-16: Configuration to Enable USB251x XNOR_MODE	an1616.pdf	74K	8/3/07
Application Note 18-15: PCB Design Guidelines for QFN and DQFN Packages	an1815.pdf	707K	2/9/09
Software
For USB2512 Only Configuration Utility for Hub EEPROM Data v1.0.0.9	e2promapp.msi	5167K	12/5/07
For USB2512A, USB2513, USB2514, USB2517 Configuration Utility for Hub EEPROM Data v1.0.2.0	e2promapp1020.msi	5075K	11/4/08
Other Information
Using the Adobe® Acrobat® Reader	aacrobat.html

Although the information in this document has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to product descriptions and specifications at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order. Products may contain design defects or errors known as anomalies which may cause a product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC's website at http://www.smsc.com. SMSC and the SMSC logo are registered trademarks of Standard Microsystems Corporation ("SMSC"). Other names mentioned may be trademarks of their respective holders. All claims made herein speak as of the date of this material. The company does not undertake to update such statements. (2/09)