Datasheet

2-Port USB 2.0 Hi-Speed Hub Controller

Datasheet

Revision 1.3 (12-27-11) 16 SMSC USB2412

DATASHEET

Chapter 4 DC Parameters

4.1 Maximum Guaranteed Ratings

Note 4.1 Refer to JEDEC Specification J-STD-020D 5..

Note 4.2 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.

Note 4.3 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.

4.2 Operating Conditions

PARAMETER SYMBOL MIN MAX UNITS

Storage Temperature T

STOR

-55 150 °C

Lead Temperature °C

3.3 V supply voltage

VDD33

PLLFILT

CRFILT

4.6 V

Voltage on any I/O pin -0.5 5.5 V

Voltage on XTALIN -0.5 4.0 V

Voltage on XTALOUT -0.5 2.5 V

PARAMETER SYMBOL MIN MAX UNITS COMMENTS

Operating

Temperature

0 70 °C Ambient temperature in still air.

3.3 V supply voltage

VDD33

3.0 3.6 V

3.3 V supply rise

time

0 400 μs See Figure 4.1

Voltage on any I/O

-0.3 5.5 V If any 3.3 V supply voltage drops

below 3.0 V, then the MAX becomes:

(3.3 V supply voltage) + 0.5

Voltage on XTALIN -0.3

VDD33