2014 Microchip Technology Inc.
DS00001726A-page 1
Datasheet
PRODUCT FEATURES
General Description
The Microchip USB2422 hub is a low-power, single
transaction translator, hub controller IC with two
downstream ports for embedded USB solutions. The hub
controller can attach to an upstream port as a Hi-Speed and
Full-Speed hub or as a Full-Speed only hub. The hub
supports Low-Speed, Full-Speed, and Hi-Speed (when
configured as a Hi-Speed hub) downstream devices on the
enabled downstream ports.
All required resistors on the USB ports are integrated into
the hub. This includes all series termination resistors on D+
and D- pins and all required pull-down and pull-up resistors
on D+ and D- pins. The over-current sense inputs for the
downstream facing ports have internal pull-up resistors.
Features
Supports the
USB Battery Charging Specification,
Revision 1.1
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
On-chip driver for 24 MHz crystal resonator or
external 24 MHz clock input
ESD protection up to 6 kV on all USB pins
Supports self-powered operation
The hub contains a built-in default configuration; no
external configuration options or components are
required
Downstream ports as non-removable ports
Downstream port power control and over-current
detection on an individual or ganged basis
Supports compound devices on a port-by-port basis
24-pin SQFN (4x4 mm), RoHS-compliant package
Commercial temperature range support:
0ºC to +70ºC
Industrial temperature range support:
-40ºC to +85ºC
Highlights
High performance, low-power, small footprint hub
controller IC with two downstream ports
Fully compliant with the
USB 2.0 Specification
Optimized for minimal bill-of-materials and low-cost
designs
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
Gaming consoles
Cable/DSL modems
HDD enclosures
KVM switches
Server front panels
Point-of-Sale (POS) systems
IP telephony
Automobile/home audio systems
Thin client terminals
USB2422
2-Port USB 2.0 Hi-Speed Hub Controller
