USB2514B-AEZC-TR détails du produit
1 General Description
The SMSC USB251xB/xBi hub is a family of low-power,configurable, MTT (multi transaction translator) hub controller IC products for embedded USB solutions. The x in the part number indicates the number of downstream ports available, while the B indicates battery charging support. The SMSC hub supports low- speed, full-speed, and hi-speed (if operating as a hi-speed hub) downstream devices on all of the enabled downstream ports.
2 Highlights
High performance, low-power, small footprint hub controller IC with 2, 3, or 4 downstream ports
Fully compliant with the USB 2.0 Specification [1]
Enhanced OEM configuration options available through either a single serial I2C® EEPROM, or SMBus slave port
MultiTRAKTM
— High-performance multiple transaction translator which provides one transaction translator per port
PortMap
— Flexible port mapping and disable sequencing
PortSwap
— Programmable USB differential-pair pin locations ease PCB design by aligning USB signal lines directly to connectors
PHYBoost
— Programmable USB signal drive strength for recovering signal integrity using 4-level driving strength resolution
3 Features
USB251xB/xBi products are fully footprint compatible with USB251x/xi/xA/xAi products as direct drop-in replacements
— Cost savings include using the same PCB components and application of USB-IF Compliance by Similarity
Full power management with individual or ganged power control of each downstream port
Fully integrated USB termination and pull-up/pull- down resistors
Supports a single external 3.3 V supply source; internal regulators provide 1.2 V internal core voltage
Onboard 24 MHz crystal driver or external 24 MHz clock input
Customizable vendor ID, product ID, and device ID 4 kilovolts of HBM JESD22-A114F ESD protection (powered and unpowered)
Supports self- or bus-powered operation
Supports the USB Battery Charging specification Rev. 1.1 for Charging Downstream Ports (CDP)
The USB251xB/xBi offers the following package:
— 36-pin QFN (6x6 mm) lead-free RoHS compliant package
USB251xBi products support the industrial temperature range of -40ºC to +85ºC
USB251xB products support the extended commercial temperature range of 0ºC to +85ºC
4 Applications
LCD monitors and TVs
Multi-function USB peripherals
PC motherboards
Set-top boxes, DVD players, DVR/PVR
Printers and scanners
PC media drive bay
Portable hub boxes
Mobile PC docking
Embedded systems
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