MAX4952B 19-5126 Rev 0 1/10 Dual 1.5/3.0/6.0Gbps SAS/SATA Redriver General Description Features The MAX4952B dual-channel redriver is designed to S Single +3.3V Supply Operation redrive one full lane of SAS or SATA signals up to S Low Power-Down Current (350A typ) for Power- 6.0Gbps and operates from a single +3.3V supply. Sensitive Applications The MAX4952B is designed for commercial SAS or S Supports SAS I/II/III P 6.0Gbps SAS/SATA applications, such as servers. S Excellent Return Loss The MAX4952B features independent output boost and Exceeds SAS/SATA Return Loss Mask (Better enhances signal integrity at the receiver by re-establishing Than 8dB Up to 3GHz) full output levels. SAS/SATA out-of-band (OOB) signaling S Supports SAS/SATA OOB-Level Signaling is supported using high-speed amplitude detection on Very Fast Entry and Exit Time of 5ns (Max) the inputs and squelch on the corresponding outputs. Programmable SAS/SATA Threshold Inputs and outputs are all terminated in 50I internally S Independent Output-Boost Selection and exhibit excellent return loss. Two Levels: 0dB, 6dB The MAX4952B is available in a small, 20-pin, 4.0mm x S On-Chip 50I Input/Output Terminations 4.0mm TQFN package with flow-through traces for ease of layout. This device is specified over the 0NC to +70NC S In-Line Signal Traces for Flow-Through Layout operating temperature range. S Space-Saving, 4.0mm x 4.0mm TQFN Package S ESD Protection on All Pins: 5.5kV (Human Body Applications Model) Servers Data Storage Ordering Information PART TEMP RANGE PIN-PACKAGE MAX4952BCTP+ 0NC to +70NC 20 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed Pad. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLEDual 1.5/3.0/6.0Gbps SAS/SATA Redriver ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Junction-to-Ambient Thermal Resistance (B ) (Note 2) JA V .......................................................................-0.3V to +4.0V 20-Pin TQFN .................................................................39NC/W CC All Other Pins (Note 1) ............................. -0.3V to (V + 0.3V) Operating Temperature Range ............................. 0NC to +70NC CC Short-Circuit Output Current DAP, DAM, HBM, HBP .........90mA Junction Temperature .....................................................+150NC Continuous Power Dissipation (T = +70NC) Storage Temperature Range ............................ -55NC to +150NC A 20-Pin TQFN (derate 25.6mW/NC above +70NC) .......2051mW Lead Temperature (soldering, 10s) ................................+300NC Junction-to-Case Thermal Resistance (B ) (Note 2) JC 20-Pin TQFN ...................................................................6NC/W Note 1: All I/O pins are clamped by internal diodes. Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V, C = 10nF coupling capacitor on each output, R = 50I on each output, T = 0NC to +70NC, unless other- CC CL L A wise noted. Typical values are at V = +3.3V and T = +25NC.) (Note 3) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE Power-Supply Range V 3.0 3.6 V CC Power-Down Current I EN = GND 0.35 2 mA PWRDN BA = BB = V 100 130 CC Supply Current I EN = V mA CC CC BA = BB = GND 85 100 Z RX-DIFF- Input Impedance, Differential DC 85 100 115 I DC Z TX-DIFF- Output Impedance, Differential DC 85 100 115 I DC AC PERFORMANCE 0.1GHz < f P 0.3GHz -18 0.3GHz < f P 0.6GHz -14 -10 Input Return Loss, Differential 0.6GHz < f P 1.2GHz RL dB RX-DIFF (Note 4) 1.2GHz < f P 2.4GHz -8 2.4GHz < f P 3.0GHz -8 3.0GHz < f P 6.0GHz -1 0.1GHz < f P 0.3GHz -6 0.3GHz < f P 0.6GHz -5 0.6GHz < f P 1.2GHz -5 Input Return Loss, RL dB RX-CM Common Mode (Note 4) 1.2GHz < f P 2.4GHz -5 2.4GHz < f P 3.0GHz -5 3.0GHz < f P 6.0GHz -1 2 MAX4952B