© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSUSB73 • Rev. 1.0.2

2

Pin Configuration

Figure 2. Pin Assignments (Top View)

Figure 3. Analog Symbol

Pin Descriptions

Pin #

Name

Type

Description

1

GND

Ground

Ground

2

D+

I/O

D+ Common Port (HS or FS USB)

3

D-

I/O

D- Common Port (HS or FS USB)

4

Power Supply Supply Voltage

5

SEL1

Input

Path Selection Control Input (see Truth Tables)

6

SEL0

Input

Path Selection Control Input (see Truth Tables)

7

HSD2S-

I/O

HSD2- from Isolation Switch (HS or FS USB)

8

HSD2S+

I/O

HSD2+ from Isolation Switch (HS or FS USB)

9

HSD2-

I/O

D- from Third Source Path (HS or FS USB)

10

HSD2+

I/O

D+ from Third Source Path (HS or FS USB)

11

HSD1+

I/O

D+ from Second Source Path (HS or FS USB)

12

HSD1-

I/O

D- from Second Source Path (HS or FS USB)

13

HSD0+

I/O

D+ from First Source Path (HS or FS USB)

14

HSD0-

I/O

D- from First Source Path (HS or FS USB)

15

/OE

Input

Enable Control Input (see Truth Tables)

16

SELS

Input

Path Selection Control Input (see Truth Table)

1

5

6

7

8

9

10

11

2

3

12

16

15

14

13

4

SELS

SEL1

GND

SEL0

D+

D-

V

CC

HSD2S- HSD2S+

HSD2-

HSD2+

HSD1-

HSD1+

HSD0- HSD0+

/OE

HSD0+

HSD1+

HSD2S+

D+

SEL0

SEL1

HSD2+

/OE

HSD0–

HSD1–

HSD2S–

D–

HSD2–

SELS

Control

Ctrl