General Description

The MAX3784/MAX3784A 5Gbps equalizers provide

compensation for transmission-medium losses in up to

40in of FR-4. They are optimized for short-run length

and balanced codes such as 8b10b, as found in multi-

plexed 1.25Gbps Ethernet systems and 4.25Gbps

Fibre Channel.

The equalizers use differential CML data inputs and

outputs. A standby mode reduces power consumption

when the parts are not in use. The MAX3784/

MAX3784A are available in a 4mm

× 4mm, 16-pin QFN

package that consumes only 185mW at +3.3V.

Features

♦ Spans 40in (1m) of FR-4 PCB

♦ 0.18UI Deterministic Jitter Up to 40in

♦ Low Power Consumption: 185mW (MAX3784)

♦ Equalization Reduces Intersymbol Interference

♦ Single +3.3V Supply

♦ Standby Mode

♦ Small 4mm × 4mm, 16-Pin QFN Package

5Gbps PCB Equalizer

________________________________________________________________

Maxim Integrated Products

1

Pin Configurations

LINE CARD

+3.3V

5Gbps

+3.3V

T/R 1

Rx

Tx

T/R 2

Rx

Tx

T/R 3

Rx

Tx

T/R 4

Rx

Tx

T/R 1

T/R 2

T/R 3

T/R 4

Rx

Tx

1.25Gbps

1.25Gbps

1.25Gbps

1.25Gbps

SWITCH

Rx

Tx

SWITCH CARD

PCB

BACKPLANE

MAX3784/

MAX3784A

EQUALIZER

IN

OUT

MAX3784/

MAX3784A

EQUALIZER

OUT

IN

Typical Application Circuit

19-2565; Rev 4; 10/07

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.

PART

TEMP

RANGE

PIN-

PACKAGE

PKG

CODE

MAX3784UGE

0

°C to +85°C 16 QFN-EP*

G1644-1

MAX3784UTE+

0

°C to +85°C 16 TQFN-EP*

T1644-3

MAX3784AUGE

0

°C to +85°C 16 QFN-EP*

G1644-1

MAX3784AUTE+

0

°C to +85°C 16 TQFN-EP*

T1644-3

Ordering Information

Applications

Chassis Life Extension

4.25Gbps Fibre Channel

4x Multiplexed 1.25Gbps Ethernet (5Gbps)

+

Denotes a lead-free package.

*Exposed pad.

1

23

4

5

6

7

8

9

10

11

16

12

13

14

15

GND

N.C.

N.C.

N.C.

N.C.

N.C.

EN

* THE EXPOSED PAD MUST BE SOLDERED TO SUPPLY GROUND

FOR CORRECT THERMAL AND ELECTRICAL PERFORMANCE.

MAX3784/

MAX3784A

TOP VIEW

QFN

*EP

Pin Configurations continued at end of data sheet.