General Description

The MAX14955 dual equalizer/redriver improves PCI

mable input equalization. This feature reduces deter-

ministic jitter and redrives circuitry to reestablish deem-

phasis, which compensates for circuit-board loss at high

frequencies. The device permits optimal placement of key

PCIe components and allows for longer runs of stripline,

microstrip, or cable.

The device contains two identical channels capable of

equalizing PCIe Gen III (8GT/s), Gen II (5GT/s), and

Gen I (2.5GT/s) signals and features electrical idle and

receiver detection.

The MAX14955 is available in a small, 40-pin, 5.0mm x

5.0mm TQFN package with flow-through traces for opti-

mal layout and minimal space requirements. The device

is specified over the -40°C to +85°C extending operating

temperature range.

Applications

● Industrial/EmbeddedPCs

● ComputeronModules

● CarrierBoards

● TestEquipment

● RackServerIndustrialPCs

● MedicalEquipment

Benefits and Features

● Fully Integrated for Ease of Use and Design Flexibility

• Optimized for PCIe Gen III (8.0GT/s), Gen II

(5.0GT/s), Gen I (2.5 GT/s) Compatible

• FourLevelsofInputEqualizationupto16dB

• EightLevelsofOutputDeemphasisupto9dB

● High Level of Performance to Overcome Noise in

Lossy Channels

• EqualizationPermitsPlacementUpto30inFR4

● RobustSolutionforHarshEnvironments

• IndustrialTemperatureRated:-40°Cto+85°C

• ±4kVHumanBodyModel(HBM)ProtectiononAll

Pins

• Housed in a Flow-Through (5mm x 5mm) TQFN

PackageforResistancetoVibration/Shocks

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer

to

www.maximintegrated.com/MAX14955.related.

PCI Express is a registered service mark of PCI-SIG Corporation.

19-6640; Rev 0; 3/13

MAX14955

Single-Lane PCIe Gen III Redriver

with Equalization and Extended

Temperature Operation

SINGLE DIFFERENTIAL PAIR

SINGLE DIFFERENTIAL PAIR

MIDPLANE

REMOTE BOARD

CONNECTORS

Tx

Rx

MAIN BOARD

PCIe

Rx

Tx

PCIe

MAX14955

Typical Operating Circuit