MAX3981 Maxim Integrated Products, MAX3981 Datasheet

MAX3981

Manufacturer Part Number

MAX3981

Description

XAUI Quad Cable Equalizer

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX3981.pdf (9 pages)

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The MAX3981 quad equalizer provides compensation

for transmission medium losses for four “lanes” of digi-

tal NRZ data at a data rate of 3.125Gbps in one

package. It is tailor-made for 10Gigabit Ethernet appli-

cations that require attenuation of noise and jitter that

occur in communicating with chassis-to-chassis inter-

connect. In support of IEEE-802.3ae for the XAUI inter-

face, the MAX3981 adaptively allows XAUI lanes to

reach 10m (33ft) with inexpensive twin-axial cable for

extended backplane applications.

The equalizer has 100Ω differential CML data inputs

and outputs.

The MAX3981 is available in a 44-pin exposed-pad

QFN package. The MAX3981 consumes only 700mW at

3.3V or 175mW per channel.

21-2178; Rev 1; 5/03

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

10GbE

IEEE–802.3ae XAUI Interface (3.125Gbps)

InfiniBand (2.5Gbps)

PMD

________________________________________________________________ Maxim Integrated Products

3.125Gbps XAUI Quad Cable Equalizer

General Description

LINE CARD

MAC

Applications

4 x 3.125Gbps

OUT

MAX3981

SUPPLY

3.3V

♦ Four Differential Digital Data “Lanes” at

♦ Span 10m (33ft) of Twin-Axial Cable

♦ Receiver Equalization Reduces Intersymbol

♦ Low Power, 175mW per Channel

♦ Standby Mode—Power-Down State

♦ Single 3.3V Supply

♦ Signal Detect

M AX 3981U GH

TWIN-AX CABLE

10m (33ft)100Ω

3.125Gbps

Interference (ISI)

PART

Typical Operating Circuit

0°C to + 85°C

RANGE

TEMP

Ordering Information

MAX3981

SUPPLY

3.3V

SWITCH CARD

PIN-

PACKAGE

44 QFN

OUT

Features

PACKAGE

CODE

G4477-1

SWITCH

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