USB2512I datasheet(32/37 Pages) SMSC

32 / 37 page

Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller

Datasheet

Revision 1.92 (11-28-07)

SMSC USB2512i

DATASHEET

Chapter 5 DC Parameters

5.1

Maximum Guaranteed Ratings

Note: 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. 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.

5.2

Recommended Operating Conditions

PARAMETER

SYMBOL

MIN

MAX

UNITS

COMMENTS

Storage

Temperature

-55

150

°C

Lead

Temperature

325

°C

Soldering < 10 seconds

1.8V supply

voltage

VDDA18PLL,

VDD18

2.5

3.3V supply

voltage

VDDA33,

VDD33PLL,

VDD33,

VDD33CR

4.6

Voltage on any

I/O pin

-0.5

5.5

Voltage on

XTAL1

-0.5

4.0

Voltage on

XTAL2

-0.5

3.6

PARAMETER

SYMBOL

MIN

MAX

UNITS

COMMENTS

Operating

Temperature

-40

°C

1.8V supply voltage

VDDA18PLL

VDD18

1.62

1.98

3.3V supply voltage

VDDA33

VDDA33PLL

VDD33

VDD33CR

3.0

3.6

Voltage on any I/O pin

-0.3

5.5

If any 3.3V supply voltage drops

be lo w 3.0 V, th en th e MAX

becomes:

(3.3V supply voltage) + 0.5

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