LAN8741AI-EN datasheet(96/106 Pages) MICROCHIP

номер детали	LAN8741Ai-EN

подробное описание детали	Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology

PDF	106 Pages

Scroll/Zoom	100%

производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

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96 / 106 page

LAN8741A/LAN8741Ai

DS00001988A-page 96

 2013-2015 Microchip Technology Inc.

Note 1: The maximum allowable values for frequency tolerance and frequency stability are application dependent.

Since any particular application must meet the IEEE ±50 ppm Total PPM Budget, the combination of these

two values must be approximately ±45 ppm (allowing for aging).

2: Frequency Deviation Over Time is also referred to as Aging.

3: The total deviation for the Transmitter Clock Frequency is specified by IEEE 802.3u as

±50 ppm.

4: The crystal must support 100 µW operation to utilize this circuit.

5: 0°C for commercial version, -40°C for industrial version

6: +70°C for commercial version, +85°C for industrial version

7: This number includes the pad, the bond wire and the lead frame. PCB capacitance is not included in this

value. The XTAL1/CLKIN pin, XTAL2 pin and PCB capacitance values are required to accurately calculate

the value of the two external load capacitors (C1 and C2 in Figure 5-9). The external load capacitors, C1 and

C2, determine the accuracy of the 25.000 MHz frequency.

LAN8741Ai-EN датащи(PDF) 96 Page - Microchip Technology