LAN88730AM-C datasheet(59/82 Pages) MICROCHIP

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DS60001256B-page 59

LAN88730

5.0

OPERATIONAL CHARACTERISTICS

5.1

Absolute Maximum Ratings*

Supply Voltage (VDDIO, VDD1A, VDD2A) (see Note 1).......................................................................... -0.5 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 (see Note 2) ............................................... VDDIO + 0.3 V

Negative voltage on input signal pins, with respect to ground (see Note 3) ............................................................-0.3 V

Positive voltage on XTAL1/CLKIN, with respect to ground .....................................................................................1.26 V

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

Maximum Junction Temperature Under Bias ....................................................................................................... .+125oC

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 that a clamp circuit be used.

2: This rating does not apply to the following pins: XTAL1/CLKIN, XTAL2, RBIAS.

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. Functional operation of the device at any condition exceeding those indicated in Section 5.2, "Operating Condi-

tions**" or any other applicable section of this specification is not implied. Note, device signals are NOT 5.0 V tolerant

unless specified otherwise.

5.2

Operating Conditions**

Supply Voltage (VDDIO) ....................................................................................................................... +1.62 V to +3.6 V

Analog Port Supply Voltage (VDD1A, VDD2A) ....................................................................................... +3.0 V to +3.6 V

Ethernet Magnetics Supply Voltage ........................................................................................................ +3.0 V to +3.6 V

Ambient Operating Temperature in Still Air (TA)........................................................................................... (see Note 1)

Note 1: -40oC to +85oC for automotive grade A version, -40oC to +105oC for automotive grade B version. Junction

temperature must not exceed 125°C.

**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.

5.3

Package Thermal Specifications

Note:

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

TABLE 5-1:

PACKAGE THERMAL PARAMETERS

Parameter

Symbol

Value

Unit

Comment

Thermal Resistance

ΘJA

oC/W

Measured in still air from the die to ambient air

Junction-to-Top-of-Package

ΨJT

0.8

oC/W

Measured in still air

Note:

Thermal parameters are measured or estimated for devices in a multi-layer 2S2P PCB per JESD51.

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