HD3SS3412

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SLAS828A – FEBRUARY 2012 – REVISED FEBRUARY 2012

PIN FUNCTIONS (continued)

PIN

PIN NAME

I/O

DESCRIPTION

11

A2+

Port A, Channel 2, High Speed Positive Signal

I/O

12

A2–

Port A, Channel 2, High Speed Negative Signal

15

A3+

Port A, Channel 3, High Speed Positive Signal

I/O

16

A3–

Port A, Channel 3, High Speed Negative Signal

SWITCH PORT B

38

B0+

Port B, Channel 0, High Speed Positive Signal

I/O

37

B0–

lPort B, Channel 0, High Speed Negative Signal

36

B1+

Port B, Channel 1, High Speed Positive Signal

I/O

35

B1–

Port B, Channel 1, High Speed Negative Signal

29

B2+

Port B, Channel 2, High Speed Positive Signal

I/O

28

B2–

Port B, Channel 2, High Speed Negative Signal

27

B3+

Port B, Channel 3, High Speed Positive Signal

I/O

26

B3–

Port B, Channel 3, High Speed Negative Signal

SWITCH PORT C

34

C0+

Port C, Channel 0, High Speed Positive Signal

I/O

33

C0–

Port C, Channel 0, High Speed Negative Signal

32

C1+

Port C, Channel 1, High Speed Positive Signal

I/O

31

C1–

Port C, Channel 1, High Speed Negative Signal

25

C2+

Port C, Channel 2, High Speed Positive Signal

I/O

24

C2–

Port C, Channel 2, High Speed Negative Signal

23

C3+

Port C, Channel 3, High Speed Positive Signal

I/O

22

C3–

Port C, Channel 3, High Speed Negative Signal

CONTROL, SUPPLY, AND NO CONNECT

9

SEL

I

Select between port B or port C. Internally tied to GND via 100k

Ω resistor

5, 13, 20, 30, 40

VDD

Supply

Positive power supply voltage

1, 4, 10, 14, 17,

GND

Supply

Negative power supply voltage

19, 21, 39, 41, Center

Pad

8, 18, 42

NC

Electrically not connected

PORT B OR PORT C CHANNEL

CONNECTED TO PORT A CHANNEL

PORT A CHANNEL

SEL = L

SEL = H

A0+

B0+

C0+

A0–

B0–

C0–

A1+

B1+

C1+

A1–

B1–

C1–

A2+

B2+

C2+

A2–

B2–

C2–

A3+

B3+

C3+

A3–

B3–

C3–

(1)

The HD3SS3412 can tolerate polarity inversions for all differential signals on Ports A, B and C. Care

should be taken to ensure the same polarity is maintained on Port A vs. Port B/C.

Copyright © 2012–2012 , Texas Instruments Incorporated

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