USB5744 datasheet(40/51 Pages) MICROCHIP

Part #	USB5744

Description	4-Port SS/HS USB Controller Hub

PDF	51 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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40 / 51 page

USB5744

DS00001855L-page 40

 2022 Microchip Technology Inc. and its subsidiaries

Note 7: 0 °C for commercial version, -40 °C for industrial version.

Note 8: +70 °C for commercial version, +85 °C for industrial version.

Note 9: This number includes the pad, the bond wire and the lead frame. PCB capacitance is not included in this

value. The XTALI/CLK_IN pin, XTALO pin and PCB capacitance values are required to accurately calcu-

late the value of the two external load capacitors. These two external load capacitors determine the accu-

racy of the 25.000 MHz frequency.

10.7.2

EXTERNAL REFERENCE CLOCK (CLK_IN)

When using an external reference clock, the following input clock specifications are suggested:

•25 MHz

• 50% duty cycle ±10%, ±100 ppm

• Jitter < 100 ps RMS

USB5744 Datasheet(PDF) 40 Page - Microchip Technology