 2007 - 2016 Microchip Technology Inc.

DS000002250A-page 3

USB2504/USB2504A

Table of Contents

1.0 Introduction ..................................................................................................................................................................................... 4

2.0 Pin Table 4-Port .............................................................................................................................................................................. 5

3.0 Pin Configuration 4-Port Hub .......................................................................................................................................................... 6

4.0 4-Port Hub Block Diagram .............................................................................................................................................................. 7

5.0 Functional Block Description ......................................................................................................................................................... 12

6.0 Backward Compatibility to the USB20H04 .................................................................................................................................... 30

7.0 XNOR Test .................................................................................................................................................................................... 31

8.0 DC Parameters ............................................................................................................................................................................. 32

9.0 AC Specifications .......................................................................................................................................................................... 36

10.0 Package Outline .......................................................................................................................................................................... 37

Appendix A: Data Sheet Revision History ........................................................................................................................................... 38

The Microchip Web Site ...................................................................................................................................................................... 39

Customer Change Notification Service ............................................................................................................................................... 39

Customer Support ............................................................................................................................................................................... 39

Product Identification System ............................................................................................................................................................. 40