MAX4951AE

LAST TIME BUY

SATA I/II Bidirectional Redriver with High ESD and Cable Detect

Dual-Channel Buffer Allows System to Support SATA Gen III Data Rates Over Long Cables and Through Connector

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $3.42

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Overview

Single +3.3V (typ) Supply Operation
Low-Power, 350µA (typ) eSATA Cable Detect
Supports SATA 1.5Gbps and 3.0Gbps Data Rates
Meets SATA I, SATA II Input/Output-Return Loss Mask
Exceeds eSATA Standard Compliant Eye Mask for Jitter
Meets or Exceeds eSATA Standard Compliant Eye Mask for Output Levels
Supports SATA OOB Signaling
Internal Input/Output 50Ω Termination Resistors
Inline Signal Traces for Flow-Through Layout
Pin Compatible with MAX4951
Space-Saving, 4mm x 4mm, TQFN Package
ESD Protection on All Pins: ±8kV (HBM)

The MAX4951AE dual-channel buffer is designed to redrive serial-ATA (SATA) I and SATA II signals and can survive ESD events up to ±8kV Human Body Model (HBM). The MAX4951AE can be placed near an eSATA connector to overcome board losses and produce an eSATA-compliant signal level. This device is Serial ATA Revision 2.6 (gold standard)-compliant, while overcoming losses in the PCB and eSATA connector.

The MAX4951AE features low standby current for power-sensitive applications. This device features hardware SATA-drive cable detection, keeping the power low in standby mode.

The MAX4951AE preserves signal integrity at the receiver by reestablishing full output levels. It reduces the total system jitter (T_J) by squaring up the signal and providing excellent return loss match to the source. This device features channel-independent digital boost controls to drive SATA outputs over normal trace lengths and eSATA connector. SATA Out-Of-Band (OOB) signaling is supported using high-speed amplitude detection on the inputs, and squelch on the corresponding outputs. Inputs and outputs are all internally 50Ω terminated.

The MAX4951AE operates from a single +3.3V (typ) supply and is available in a small, 4mm x 4mm, TQFN package with flow-through traces for ease of layout. This device is specified over the 0°C to +70°C operating temperature range.

Applications

Laptop Computers
Docking Stations
Desktop Computers
Servers
Data Storage/Work Stations

Part Models: 2
1ku List Price: Starting From $3.42

Documentation

Data Sheet 1

MAX4951AE: SATA I/II Bidirectional Redriver with High ESD and Cable Detect Data Sheet (Rev.0) 08/11/2009

Reliability Data 1

MAX4951AE Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX4951AECTP+	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX4951AECTP+T	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Interface Transceivers & Isolators 2
MAX4951	PRODUCTION	SATA I/SATA II Bidirectional Re-Driver
MAX4952	LAST TIME BUY	Quad Equalized 1.5/3.0/6.0GT/s SAS/SATA Redriver

Evaluation Kits

Evaluation Kit for the MAX4951AE

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Features and Benefits

Application Circuit with SATA Input/Output
Eye Diagram Test Circuit with SMA Inputs/Outputs
Calibration Traces (50Ω Load Trace and Through Trace)
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX4951AE evaluation kit (EV kit) provides a proven design to evaluate the MAX4951AE dual-channel buffer. The EV kit contains four sections: application circuit, characterization circuit, and two sets of calibration traces.

The application circuit is designed to demonstrate the MAX4951AE IC's use in redriving Serial-ATA (SATA) signals and SATA cable detection. This section of the EV kit operates from an external +5V supply that is regulated by an on-board LDO to +3.3V, which powers the MAX4951AE (U1) device. All traces in the application circuit are 100Ω differential controlled-impedance traces.

The characterization circuit is provided for eye diagram evaluation using SMA connectors and 50Ω controlled-impedance traces. This section is powered by an external +3.3V power supply.