Table of Contents

Description..................................................................................................................................................... 1

To Our Valued Customers.............................................................................................................................. 2

1.

Preface....................................................................................................................................................4

1.1.

Buffer Types................................................................................................................................. 4

2.

Introduction............................................................................................................................................. 5

2.1.

General Description......................................................................................................................5

3.

Pin Description and Configuration...........................................................................................................7

3.1.

LAN8670 Pin Assignments...........................................................................................................7

3.2.

LAN8671 Pin Assignments...........................................................................................................9

3.3.

LAN8672 Pin Assignments.........................................................................................................10

3.4.

Pin Descriptions......................................................................................................................... 12

3.5.

Configuration Straps...................................................................................................................14

4.

Packaging Information.......................................................................................................................... 16

4.1.

32-VQFN (LAN8670 Only)......................................................................................................... 16

4.2.

24-VQFN (LAN8671 Only)......................................................................................................... 19

4.3.

36-VQFN (LAN8672 Only)......................................................................................................... 22

5.

Package Marking Information............................................................................................................... 25

The Microchip Website.................................................................................................................................27

Product Change Notification Service............................................................................................................27

Customer Support........................................................................................................................................ 27

Microchip Devices Code Protection Feature................................................................................................ 27

Legal Notice................................................................................................................................................. 28

Trademarks.................................................................................................................................................. 28

Quality Management System....................................................................................................................... 29

Worldwide Sales and Service.......................................................................................................................30

LAN8670/1/2

and its subsidiaries

Product Brief

DS60001536E-page 3