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MAX4986：SAS/SATA Single Lane 2:1/1:2 Multiplexer/Demultiplexer Plus Redriver with Equalization

1:2/2:1 Active Mux with Redrive Maintains Signal Integrity While Providing High-Frequency Performance at SAS/SATA 2.0s

The MAX4986 active 2:1/1:2 multiplexer/demultiplexer equalizes and redrives SAS/SATA or SATA-only signals up to 6.0Gbps and operates from a single +3.3V supply. The MAX4986 features independent input equalization and output preemphasis. The MAX4986 enhances signal integrity at the receiver by equalizing the signal at the input and establishing preemphasis at the output of the device. SAS/SATA and SATA-only 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 internally 50Ω terminated and must be AC-coupled to the SAS/SATA controller IC and SAS/SATA device. The MAX4986 is available in a small (3.5mm x 9.0mm), 42-pin TQFN package optimal for simplified layout and space-saving requirements. The MAX4986C is specified over the 0°C to +70°C commercial operating temperature range. The MAX4986E is specified over the -40°C to +85°C extended temperature range.

Key Features Single +3.3V Supply Operation Low-Power, 1mA (typ) Standby Active-High Enable (EN) for Use with Power Good Active-Low Enable (EN) for Cable-Detect Function Supports SAS I/II/III ≤ 6.0Gbps Independent Programmable Input Equalization Two Levels: 0dB, 4dB Independent Programmable Output Preemphasis Two Levels: 0dB, 3dB Independent Programmable Output Level Selection Supports SAS/SATA OOB-Level Signaling Programmable SAS/SATA Threshold Cable-Detect Feature for Low Power Consumption On-Chip 50Ω Input/Output Terminations Inline Signal Traces for Simplified Layout Space-Saving, 3.5mm x 9.0mm TQFN Package with Exposed Pad

MAX4986: Functional Diagram Applications/Uses Desktops Docking Stations PC Servers Workstations

DataSheet

Parametrics

Design kits & evaluation modules

• MAX4986EVKIT

Quality and Environmental Data

• MAX4986.pdf

Ordering Information