LAN9250 datasheet(399/421 Pages) MICROCHIP

399 / 421 page

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DS00001913A-page 399

LAN9250

19.0

OPERATIONAL CHARACTERISTICS

19.1

Absolute Maximum Ratings*

Supply Voltage (VDD12TX1, VDD12TX2, OSCVDD12, VDDCR) (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +1.5 V

Supply Voltage (VDD33TXRX1, VDD33TXRX2, VDD33BIAS, VDD33, VDDIO) (Note 1) . . . . . . . . . . . . . 0 V to +3.6 V

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

Positive voltage on input signal pins, with respect to ground (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . VDDIO + 2.0 V

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

Positive voltage on OSCI, with respect to ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+3.6 V

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

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150oC

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

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

Note 1:

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 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 2:

This rating does not apply to the following pins: OSCI, RBIAS

Note 3:

This rating does not apply to the following pins: RBIAS

*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 19.2, "Operating Conditions**", Section

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

NOT

5 volt tolerant.

19.2

Operating Conditions**

Supply Voltage (VDD12TX1, VDD12TX2, OSCVDD12, VDDCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.14 V to +1.26 V

Analog Port Supply Voltage (VDD33TXRX1, VDD33TXRX2, VDD33BIAS, VDD33) . . . . . . . . . . . . . . . +3.0 V to +3.6 V

I/O Supply Voltage (VDDIO) (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.62 V to +3.6 V

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

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

Note 4:

0oC to +70oC for commercial version, -40oC to +85oC for industrial version, -40oC to +105oC for extended

industrial version.

Extended industrial temperature range is supported with the following restrictions:

- 64-QFN package: External regulator required (Internal regulator disabled)

and 2.5 V (typ) Ethernet magnetics voltage.

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

pleted power-up, VDDIO and the magnetics power supply must maintain their voltage level with ±10%. Varying the volt-

age greater than ±10% after the device has completed power-up can cause errors in device operation.

Note:

Do not drive input signals without power supplied to the device.

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