19-5815 Rev 0 3/11 E V A L U A T I O N K I T A V A I L A B L E MAX4951C 6Gbps SATA Bidirectional Redriver with Input Equalization, Preemphasis, and Advanced Power Management General Description Benefits and Features The MAX4951C dual-channel buffer with input equaliza- S Unique Design Saves Power tion and preemphasis is ideal to redrive internal serial- Low-Power, 20A (typ) SATA Cable/Drive Detect ATA (SATA) 1i, 2i, and 3i signals as well as eSATA 1m Dynamic Power Reduction and 2m signals. The device features high electrostatic Reduced Power Consumption When Idle discharge (ESD) Q8kV Human Body Model (HBM) pro- Maintains Common-Mode Output Level tection. The device can be placed near a SATA connec- No Loss of Data When Coming Out of Low- tor on the motherboard to overcome board losses and Power Mode guarantee SATA compliance. The device is SATA speci- S Allows Design Flexibility fication version 3.0 (gold standard) compliant and can Single +3.3V Supply Operation also be pin-configured for SATA specification version 2.6 SATA 3i (6.0Gbps) and SATA 2i/2m (3.0Gbps) (gold standard) compliance. Compliant The device features hardware SATA-drive cable detec- SATA 1i/1m (1.5Gbps) Compatible tion that automatically places the device into a standby S Permits Longer Trace Lengths mode that consumes less than 20FA (typ) standby cur- Input Equalization rent when no drive is connected. In addition, the device Selectable Output Preemphasis features an independent channel dynamic power-down S High Level of Integration for Performance mode where power consumption is reduced when no Excellent Input/Output Return Loss Up to 6Gbps input signal is present. The device maintains output Supports SATA 2i and 3i Output Levels common-mode levels to meet internal SATA version 3.0 Supports SATA OOB Signaling standards and prevent delays when coming out of low- OOB Detection: 3ns (typ) power mode. High ESD Protection on All Pins: 8kV (HBM) The device preserves signal integrity at the receiv er by S Saves Board Space reestablishing full output levels and reducing the total On-Chip 50I Input/Output Termination Resistors system jitter (T ) by providing equalization. The device J Inline Signal Traces for Flow-Through Layout features channel-independent digital preemphasis con- Space-Saving, 4mm x 4mm TQFN Package with trols to drive SATA outputs over longer trace lengths to Exposed Pad meet internal SATA specifications. SATA out-of-band Pin Compatible with the MAX4951BE (OOB) signaling is supported using high-speed out-of- band signal detection on the inputs, and squelch on Applications the corresponding outputs. Inputs and outputs are all internally 50I terminated and must be AC-coupled to the Laptop Computers SATA controller IC and SATA device. Servers The device operates from a single +3.3V (typ) supply, Desktop Computers is available in a small, 4mm x 4mm TQFN package with Docking Stations flow-through traces for ease of layout, and is specified over the commercial 0NC to +70NC operating temperature Data Storage/Workstations range. The MAX4951C is also pin compatible with the MAX4951BE SATA 6.0Gbps redriver. Ordering Information appears at end of data sheet. For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX4951C.related 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.MAX4951C 6Gbps SATA Bidirectional Redriver with Input Equalization, Preemphasis, and Advanced Power Management ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) Continuous Power Dissipation (T = +70NC) A V ...................................................................... -0.3V to +4.0V TQFN (derate 25.6mW/NC above +70NC)................. 2051mW CC AINP, AINM, BINP, BINM, EN, CAD, Operating Temperature Range ............................ 0NC to +70NC MODE, PA, PB (Note 1) ........................ -0.3V to (V + 0.3V) Storage Temperature Range ........................... -55NC to +150NC CC Short-Circuit Output Current Lead Temperature (soldering, 10s) ................................+300NC BOUTP, BOUTM, AOUTP, AOUTM .............................Q30mA Soldering Temperature (reflow) ......................................+260NC Continuous Current at Inputs AINP, AINM, BINP, BINM ..............................................Q5mA Note 1: All I/O pins are clamped by internal diodes. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. PACKAGE THERMAL CHARACTERISTICS (Note 2) TQFN Junction-to-Ambient Thermal Resistance (B ) .......... 39NCW JA Junction-to-Case Thermal Resistance (B ) ................ 6NC/W JC 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. ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V, C = 10nF coupling capacitor on each output, R = 50I, T = 0NC to +70NC, unless otherwise noted. Typical CC CL L A values are at V = +3.3V, T = +25NC.) (Note 3) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Power-Supply Range V 3.0 3.6 V CC PA = PB = V , D10.2 pattern, f = 3GHz, CC 70 100 active state Operating Supply Current I mA CC PA = PB = GND, D10.2 pattern, f = 3GHz, 60 85 active state Standby Supply Current I EN = GND or CAD = V 20 500 FA STBY CC Dynamic Power-Down Current I 16 20 mA DYNPD Z RX-DIFF- Differential Input Resistance (Note 4) 85 100 115 I DC Z TX-DIFF- Differential Output Resistance (Note 4) 85 100 115 I DC AC PERFORMANCE 150MHz P f < 300MHz 18 300MHz P f < 600MHz 14 Differential Input Return Loss RL 600MHz P f < 1200MHz 10 dB RX-DIFF (Notes 4, 5) 1.2GHz P f < 2.4GHz 8 2.4GHz P f 3.0GHz 3 Maxim Integrated Products 2