The MAX4951BE dual-channel buffer is ideal to redrive serial ATA (SATA) I, SATA II, and SATA III signals and features high electrostatic discharge (ESD) ±8kV Human Body Model (HBM) protection. The MAX4951BE can be placed nearly anywhere on the motherboard to overcome board losses and produce an eSATA-compatible signal level. This device is SATA specification v.2.6 (gold standard)-compliant, while overcoming losses in the PCB and eSATA connector.
The MAX4951BE features very low standby current for power-sensitive applications. This device features hardware SATA-drive cable detection, keeping the power low in standby mode. The device also features an independent channel, dynamic power-down mode where power consumption is reduced when no input signal is present.
The MAX4951BE preserves signal integrity at the receiver by reestablishing full output levels and can reduce the total system jitter (TJ) by providing input equalization. This device features channel-independent digital preemphasis controls to drive SATA outputs over longer trace lengths or to meet eSATA specifications. SATA Out-Of-Band (OOB) signaling is supported using high-speed OOB 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 MAX4951BE operates from a single +3.3V (typ) supply, and is available in a small, 4mm × 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.
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