MAX4986 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – SAS/SATA Single Lane 2:1/1:2 Multiplexer/Demultiplexer Plus Redriver with Equalization

19-5127; Rev 1; 7/12
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SAS/SATA Single Lane 2:1/1:2 Multiplexer/
Demultiplexer Plus Redriver with Equalization
General Description
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 sig-
nal 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 ampli-
tude detection on the inputs and squelch on the corre-
sponding outputs. Inputs and outputs are internally 50I
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 0NC to +70NC commercial operating tempera-
ture range. The MAX4986E is specified over the -40NC to
+85NC extended temperature range.
PC Servers
Workstations
Desktops
Docking Stations
Applications
Features
S Single +3.3V Supply Operation
S Low-Power, 1mA (typ) Standby
Active-High Enable (EN) for Use with Power Good
Active-Low Enable (EN) for Cable-Detect Function
S Supports SAS I/II/III P 6.0Gbps
S Independent Programmable Input Equalization
Two Levels: 0dB, 4dB
S Independent Programmable Output Preemphasis
Two Levels: 0dB, 3dB
S Independent Programmable Output Level
Selection
S Supports SAS/SATA OOB-Level Signaling
Programmable SAS/SATA Threshold
S Cable-Detect Feature for Low Power Consumption
S On-Chip 50I Input/Output Terminations
S Inline Signal Traces for Simplified Layout
S Space-Saving, 3.5mm x 9.0mm TQFN Package
with Exposed Pad
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX4986CTO+
0NC to +70NC 42 TQFN-EP*
MAX4986ETO+
-40NC to +85NC 42 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
For pricing, delivery, and ordering information, please contact Maxim Direct
  1
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.