USB3450

DS00002105A-page 10

3.0

LIMITING VALUES

TABLE 3-1:

MAXIMUM RATINGS

Parameter

Symbol

Conditions

MIN

TYP

MAX

Units

Maximum VBUS, ID, DP,

and DM voltage to GND

-0.5

+5.5

V

Maximum VDD1.8 and

VDDA1.8 voltage to

Ground

-0.5

2.5

V

Maximum 3.3V supply

voltage to Ground

-0.5

4.0

V

Maximum I/O voltage to

Ground

-0.5

4.0

V

Operating Temperature

070

C

Storage Temperature

-55

150

C

Note:

Stresses above those listed could cause damage to the device. This is a stress rating only and functional

operation of the device at any other condition above those indicated in the operation sections of this spec-

ification 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 tran-

sients on the AC power line may appear on the DC output. If this possibility exists, it is suggested that a

clamp circuit be used.

TABLE 3-2:

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Conditions

MIN

TYP

MAX

Units

3.3V Supply Voltage

3.0

3.3

3.6

V

0.0

V

Input Voltage on Analog I/O

Pins (DP, DM)

0.0

V

Ambient Temperature

0+70

TABLE 3-3:

RECOMMENDED EXTERNAL CLOCK CONDITIONS

Parameter

Symbol

Conditions

MIN

TYP

MAX

Units

System Clock Frequency

XI driven by the external clock;

and no connection at XO

24

MHz

System Clock Duty Cycle

XI driven by the external clock;

and no connection at XO

45

50

55

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