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MAX3984

1Gbps to 10Gbps Preemphasis Driver with Receive Equalizer

Maxim Integrated 

19-0868; Rev 0; 7/07

1Gbps to 10Gbps Preemphasis Driver with

Receive Equalizer

General Description

The MAX3984 is a single-channel, preemphasis driver

with input equalization that operates from 1Gbps to

10.3Gbps. It provides compensation for copper links,

such as 8.5Gbps Fibre Channel and 10.3Gbps

Ethernet, allowing spans of up to 10m with 24 AWG

cable. The driver provides four selectable preemphasis

levels, and the selectable input equalizer compensates

for up to 10in of FR-4 circuit board material at 10Gbps.

The MAX3984 also features SFP-compliant loss-of-sig-

nal (LOS) detection and TX_DISABLE. Selectable out-

put swing reduces EMI and power consumption. The

MAX3984 is packaged in a lead-free, 3mm x 3mm,

16-pin thin QFN and operates from a 0°C to +85°C tem-

perature range.

Applications

8.5Gbps Fibre Channel Active Cable Assemblies

10.3Gbps Ethernet

STM-64

Pin Configuration appears at end of data sheet.

Features

♦ Drives Up to 10m of 24 AWG Cable

♦ Drives Up to 30in of FR-4

♦ Selectable 1000mVP-P or 1200mVP-P Differential

Output Swing

♦ Selectable Output Preemphasis

♦ Selectable Input Equalization

♦ LOS Detection with Built-In Squelch

♦ Transmit Disable

♦ Hot Pluggable

Ordering Information

PART

TEMP

RANGE

PIN-PACKAGE

PKG

CODE

MAX3984UTE+ 0°C to +85°C 16 Thin QFN-EP* T1633F-3

+Denotes a lead-free package.

*EP = Exposed pad.

Typical Operating Circuits

DISK

ENCLOSURE

SWITCH

OR

SERDES

Tx+

Tx-

Rx+

Rx-

≤ 5V

≥ 4.7kΩ

+3.3V

TX_DISABLE VCC

PE0

VCC

PE1

LOS

OR

GND IN_LEV MAX3984

OUT_LEV

0.01μF

IN+

OUT+

IN-

0.01μF

GND

OUT-

+3.3V

0.01μF

OUT+

IN+

OUT-

IN-

0.01μF PE0

VCC

PE1 MAX3984

OR

GND

IN_LEV

OUT_LEV

LOS

GND

ACTIVE CABLE ASSEMBLY

≤ 10m (24 AWG)

UP TO 10Gbps

COPPER CABLE

39Ω

DIFFERENTIAL

100Ω TWIN-AX 0.01μF 22pF

39Ω

22pF 0.01μF

0.01μF 22pF

39Ω

22pF 0.01μF

39Ω

FABRIC SWTCH

≤ 5V

+3.3V

LOS

PE0

PE1

VCC

OR

MAX3984 IN_LEV GND

OUT_LEV

0.01μF

IN+

OUT+

IN-

GND

OUT-

0.01μF

RPULLUP

≥ 4.7kΩ

SWITCH

OR

SERDES

Rx+

Rx-

+3.3V

OUT+

VCC

0.01μF

IN+

Tx+

OUT-

IN-

Tx-

PE0 0.01μF

LOS MAX3984 PE1

VCC

OR

IN_LEV

GND

OUT_LEV

GND TX_DISALBOLSE

Typical Operating Circuits continued at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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