LAN8820I datasheet(60/83 Pages) MICROCHIP

60 / 83 page

LAN8820/LAN8820I

DS00001871B-page 60

 2009-2015 Microchip Technology Inc.

5.0

OPERATIONAL CHARACTERISTICS

5.1

Absolute Maximum Ratings*

Supply Voltage (VDD25IO) (Note 5-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +2.75V

Analog Supply Voltage (VDD12A) (Note 5-1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V to +1.5V

Digital Core Supply Voltage (VDD12CORE) (Note 5-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +1.5V

Ethernet Magnetics Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +3.6V

Positive voltage on signal pins, with respect to ground (Note 5-2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+6.0V

Negative voltage on signal pins, with respect to ground (Note 5-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V

Positive voltage on XI, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+4.6V

Positive voltage on XO, with respect to ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+2.5V

Ambient Operating Temperature in Still Air (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 5-4

Junction to Ambient (

JA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24.4oC/W

Junction to Top of Package (ΨJT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.1oC/W

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

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

Latch-up Performance per EIA/JESD 78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/-150mA

Note 5-1

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 that a clamp

circuit be used.

Note 5-2

This rating does not apply to the following pins: XI, XO, ETHRBIAS.

Note 5-3

This rating does not apply to the following pins: ETHRBIAS.

Note 5-4

0oC to +70oC for commercial version, -40oC to +85oC for industrial version.

*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 5.2, "Operating Conditions**", Section 5.4,

"DC Specifications", or any other applicable section of this specification is not implied. Note, device signals are NOT 5

volt tolerant unless specified otherwise.

5.2

Operating Conditions**

Supply Voltage (VDD25IO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.25V to +2.75V

Supply Voltage (VDD12A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.14V to +1.26V

Digital Core Supply Voltage (VDD12CORE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.14V to +1.26V

Ethernet Magnetics Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.25V to +3.6V

Ambient Operating Temperature in Still Air (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 5-4

**Proper operation of the device is guaranteed only within the ranges specified in this section. After the device has com-

pleted power-up, VDD25IO and the magnetics power supply must maintain their voltage level within +/-10%. Varying

the voltage greater than +/-10% after the device has completed power-up can cause errors in device operation.

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