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

Features

♦ Drives Up to 10m of 24 AWG Cable

♦ Drives Up to 30in of FR-4

Output Swing

♦ Selectable Output Preemphasis

♦ Selectable Input Equalization

♦ LOS Detection with Built-In Squelch

♦ Transmit Disable

♦ Hot Pluggable

1Gbps to 10Gbps Preemphasis Driver with

Receive Equalizer

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-0868; Rev 0; 7/07

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.

+

Denotes a lead-free package.

*EP = Exposed pad.

Pin Configuration appears at end of data sheet.

Typical Operating Circuits continued at end of data sheet.

PART

TEMP

RANGE

PIN-PACKAGE

PKG

CODE

MAX3984UTE+

0

°C to +85°C 16 Thin QFN-EP* T1633F-3

8.5Gbps Fibre Channel

10.3Gbps Ethernet

Active Cable Assemblies

STM-64

TX_DISABLE

PE1

IN_LEV

PE0

OUT_LEV

IN+

IN-

LOS

OR

GND

GND

+3.3V

OUT+

OUT-

MAX3984

0.01

μF

0.01

μF

LOS

PE1

IN_LEV

PE0

OUT_LEV

OR

GND

GND

+3.3V

IN+

IN-

MAX3984

OUT+

OUT-

0.01

μF

0.01

μF

22pF

39

Ω

22pF

0.01

μF

0.01

μF

39

Ω

22pF

39

Ω

22pF

39

Ω

LOS

LOS

PE1

IN_LEV

PE0

OUT_LEV

IN+

IN-

OR

GND

GND

+3.3V

OUT+

OUT-

MAX3984

0.01

μF

0.01

μF

LOS

PE1

IN_LEV

PE0

OUT_LEV

TX_DISABLE

OR

GND

GND

+3.3V

IN+

IN-

MAX3984

OUT+

OUT-

0.01

μF

0.01

μF

0.01

μF

0.01

μF

≤ 10m (24 AWG)

UP TO 10Gbps

COPPER CABLE

DIFFERENTIAL

100

Ω TWIN-AX

ACTIVE CABLE ASSEMBLY

Tx+

Tx-

Rx+

Rx-

DISK

ENCLOSURE

SWITCH

OR

SERDES

≤5V

≥ 4.7kΩ

Rx+

Rx-

Tx+

Tx-

FABRIC SWTCH

SWITCH

OR

SERDES

≤5V

≥ 4.7kΩ

Typical Operating Circuits