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MAX14972

Dual SuperSpeed USB 3.0 Equalizer/Redriver

Pin Description

Pin Configuration

PIN

NAME

FUNCTION

1, 13

close as possible to the device.

2

EQ1

Three-State Input Equalization Control, Channel 1. Leave EQ1 unconnected for default state.

3

DE1

Three-State Transition Bit and Nontransition Bit Output Amplitude Control, Channel 1. Connect DE1 to

4

OS1

Two-State Transition-Bit Output Amplitude Control, Channel 1. Connect OS1 to GND for default state.

5

ENRXD

Active-High Enable. Drive ENRXD high or leave unconnected for normal operation. Drive ENRXD low

6, 10, 18, 21

GND

Ground

7, 24

N.C.

No Connection. Not internally connected.

8

RX1-

Inverting Input, Channel 1. AC-couple RX1- with a low-ESR 100nF capacitor.

9

RX1+

Noninverting Input, Channel 1. AC-couple RX1+ with a low-ESR 100nF capacitor.

11

TX2-

Inverting Output, Channel 2. AC-couple TX2- with a low-ESR 100nF capacitor.

12

TX2+

Noninverting Output, Channel 2. AC-couple TX2+ with a low-ESR 100nF capacitor.

14

CM

Active-High Compliance Mode Control. Drive CM high to force active state. Drive CM low or leave

unconnected for normal operation. CM has a 400kI (typ) pulldown resistor to GND.

23

24

22

21

8

7

9

10

12

TX1+

45

6

17

18

16

14

13

TX1-

*EP

N.C.

*CONNECT EXPOSED PAD (EP) TO GND.

GND

RX1+

RX1-

N.C.

MAX14972

3

15

GND

20

11 TX2-

RX2-

19

12 TX2+

RX2+

TQFN

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