USB2513 datasheet(60/72 Pages) SMSC

60 / 72 page

USB 2.0 Hi-Speed Hub Controller

Datasheet

Revision 1.0 (3-11-09)

SMSC USB251x

DATASHEET

Chapter 9 DC Parameters

9.1

Maximum Guaranteed Ratings

Note 9.1

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 9.2

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.

9.2

Operating Conditions

PARAMETER

SYMBOL

MIN

MAX

UNITS

COMMENTS

Storage

Temperature

TSTOR

-55

150

°C

Lead

Temperature

Refer to JEDEC Specification J-STD-

020D.

3.3 V supply

voltage

VDD33

PLLFILT

CRFILT

4.6

Applies to all parts.

Voltage on any

I/O pin

-0.5

5.5

Voltage on

XTALIN

-0.5

4.0

Voltage on

XTALOUT

-0.5

2.5

PARAMETER

SYMBOL

MIN

MAX

UNITS

COMMENTS

Commercial

Operating

Temperature

°C

Ambient temperature in still air.

Only applies to USB251x, USB251xA,

and USB251xB products.

Industrial

Operating

Temperature

TAI

-40

°C

Ambient temperature in still air.

Only applies to USB251xi,

USB251xAi, and USB251xBi

products.

3.3 V supply voltage

VDD33

3.0

3.6

Applies to all parts.

3.3 V supply rise

time

tRT

400

μs

See Figure 9.1

Voltage on any I/O

-0.3

5.5

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

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