USB2534 datasheet(41/52 Pages) MICROCHIP

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USB 2.0 Hi-Speed 4-Port Hub Controller

Datasheet

 2014 Microchip Technology Inc.

DS00001713A-page 41

Chapter 9 Operational Characteristics

9.1

Absolute Maximum Ratings*

+3.3 V Supply Voltage (VDD33, VDDA33) (Note 9.1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +3.6 V

Positive voltage on input signal pins, with respect to ground (Note 9.2) . . . . . . . . . . . . . . . . . . . . 3.6 V

Negative voltage on input signal pins, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V

Positive voltage on XTAL1/REFCLK, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . . VDDCR12

Positive voltage on USB DP/DM signals, with respect to ground (Note 9.3) . . . . . . . . . . . . . . . . . 5.5 V

Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55oC to +150oC

Lead Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Refer to JEDEC Spec. J-STD-020

HBM ESD Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .JEDEC Class 3A

Note 9.1

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 AC power is switched on or off. In

addition, voltage transients on the AC power line may appear on the DC output. If this

possibility exists, it is suggested to use a clamp circuit.

Note 9.2

This rating does not apply to the following signals: All USB DM/DP pins, XTAL1/REFCLK,

XTAL2.

Note 9.3

This rating applies only when VDD33 is powered.

*Stresses exceeding those listed in this section could cause permanent damage to the device. This is

a stress rating only. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability. Functional operation of the device at any condition exceeding those indicated in

Section 9.2, "Operating Conditions**", Section 9.4, "DC Specifications", or any other applicable section

of this specification is not implied. Note, device signals are NOT 5 volt tolerant unless specified

otherwise.

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