Ruggedized 6Gbps SATA Redriver with High ESD and Extended Temperature Operation

Drive SATA Gen III Signals in a Low-Power Robust Design

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The MAX14970 dual-channel buffer with input equalization and preemphasis is ideal to redrive internal serial-ATA (SATA) 1i, 2i, and 3i signals as well as eSATA 1m and 2m signals. The device features high electrostatic discharge (ESD) ±8kV Human Body Model (HBM) protection. The device can be placed near a SATA connector on the motherboard to overcome board losses and guarantee SATA compliance. The device is SATA specification version 3.0 (gold standard) compliant and can also be pin-configured for SATA specification version 2.6 (gold standard) compliance.

The device features hardware SATA-drive cable detection that automatically places the device into a standby mode that consumes less than 20μA (typ) standby current when no drive is connected. In addition, the device features an independent channel dynamic power-down mode where power consumption is reduced when no input signal is present. The device maintains output common-mode levels to meet internal SATA version 3.0 standards and prevent delays when coming out of low-power mode. The device preserves signal integrity at the receiver by reestablishing full output levels and reducing the total system jitter (TJ) by providing equalization. The device features channel-independent digital preemphasis controls to drive SATA outputs over longer trace lengths to meet internal SATA specifications. SATA out-of-band (OOB) signaling is supported using high-speed out-of-band signal detection on the inputs, and squelch on the corresponding outputs. Inputs and outputs are all internally 50Ω terminated and must be AC-coupled to the SATA controller IC and SATA device.

The device operates from a single +3.3V (typ) supply, is available in a small, 4mm x 4mm TQFN package with flow-through traces for ease of layout, and is specified over the extended -40°C to +85°C operating temperature range.
MAX14970: Functional Diagram MAX14970: Functional Diagram Enlarge+

Key Features

  • Robust Solution for Harsh Environments
    • Extended Temp Rating: -40°C to +85°C
    • High ESD Protection on All Pins: ±8kV (HBM)
    • Package for Resistance to Vibration/Shocks
  • Unique Power Saving Design
    • Standby State: < 1mW (typ)
    • Dynamic Power-Down State: Reduced
    • Idle State: 52.8mW (typ)
    • Active State: 231mW (typ)
  • Design Flexibility
    • Input Equalization and Selectable Output Preemphasis
    • Single 3.3V Supply Operation
    • SATA 3i (6.0Gbps), SATA 2i/2m (3.0Gbps), and SATA 1i/1m(1.5Gbps) Compatible


  • Industrial Server
  • Industrial/Embedded PC
  • Medical
  • Portable IPC/HMI
  • SATA SSDs or HDDs

See parametric specs for Repeaters and Buffers (SAS, SATA, PCIe, USB) (13)

Part NumberFunctionsInterfaceData Rate
ChannelsPackage/PinsOper. Temp.
maxtypSee Notes
MAX14970 Equalizer/Re-DriverSATA60003.3702
-40 to +85$4.33 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX14970EVKIT: Evaluation Kit for the MAX14970

Tools & Models

  • MAX14970 HSPICE Model
  • Product Reliability Reports: MAX14970.pdf 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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