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DS00002256A-page 15

USB2227/USB2228

5.0

DC PARAMETERS

5.1

Maximum Ratings

Note 1: Stresses above the specified parameters may cause permanent damage to the device. This is a stress rat-

ing only and functional operation of the device at any condition above those indicated in the operation sec-

tions of this specification is not implied.

2: When powering this device from laboratory or system power supplies, it is important that the Absolute Max-

imum 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.

Parameter

Symbol

MIN

MAX

Units

Comments

Storage

Temperature

-55

150

°C

Lead

Temperature

325

°C

Soldering < 10 seconds

3.3V supply

voltage

-0.5

4.0

V

Voltage on

GPIO3 &

USBDP/DM

pins

-0.5

(3.3V supply voltage + 2)

6V

Voltage on

GPIO8,10&11

-0.5

V

When internal power FET

operation of these pins is

enabled, these pins may be

simultaneously shorted to

ground or any voltage up to

3.63V indefinitely, without

damage to the device as

less than 70°C.

Voltage on any

signal pin

-0.5

V

Voltage on

XTAL1

-0.5

4.0

V

Voltage on

XTAL2

-0.5

V