EVALUATION KIT AVAILABLE MAX14950 Quad PCI Express Equalizer/Redriver General Description Features The MAX14950 is a quad equalizer/redriver designed to S Optimized for Generation III (8.0GT/s) and improve PCI Express (PCIe) signal integrity by provid- Generation II (5.0GT/s) with Generation I (2.5GT/s) ing programmable input equalization at its receiver and Compatibility programmable redrive circuitry. The output circuitry re- S Receive Detection Permits Completely establishes deemphasis lost on the board and compen- Transparent, Software-Free Operation sates for circuit-board loss. The device permits optimal S Equalization Permits Placement of Up to 30in FR4 placement of key PCIe components. The device is useful with stripline, microstrip printed circuits, and balanced S PCIe Gen III (8.0GT/s)-Compliant Input/Output Return Loss 100I cable. S Electrical Idle Detection The device is tailored for PCIe and features electrical idle and receiver detection on each channel. It is optimized S Very Low Latency: 160ps (typ) Propagation Delay for PCIe Gen III (8.0GT/s) and Gen II (5.0GT/s) data S Random Jitter P 0.5ps (typ) RMS rates, while still handling Gen I (2.5GT/s). S Deterministic Jitter P 10.5ps (typ) P-P The MAX14950 is available in a small, lead-free, 42-pin S Four-Level-Programmable Input Equalization (3.5mm x 9.0mm) TQFN package for optimal layout and minimal space requirements. The device is specified S Eight-Level-Programmable Output Emphasis over the 0NC to +70NC operating temperature range. S On-Chip 50I Input/Output Terminations S Single +3.3V Supply Operation Applications S 5kV Human Body Model (HBM) Protection On All Servers Pins Storage S Space-Saving: 3.5mm x 9.0mm TQFN Package Desktop Computers/Notebook PCs S Pin Compatible with MAX4950 PCIe Generation II Communications Switchers Redriver/Equalizer Ordering Information PART TEMP RANGE PIN-PACKAGE MAX14950CTO+ 0NC to +70NC 42 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. PCI Express is a registered trademark of PCI-SIG Corp. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-5715 Rev 1 11/12MAX14950 Quad PCI Express Equalizer/Redriver ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) Operating Temperature Range ........................... 0NC to +70NC V ........................................................................ -0.3V to +4V Storage Temperature Range ......................... -55NC to +150NC CC All Other Pins (Note 1) ........................... -0.3V to (V + 0.3V) Junction Temperature .....................................................+150NC CC Continuous Current IN P/IN N ..................................... Q30mA Lead Temperature (soldering, 10s) ...............................+300NC Peak Current IN P/IN N (pulsed for 1Fs, 1% duty cycle) .... Q100mA Soldering Temperature (reflow) .....................................+260NC Continuous Power Dissipation (T = +70NC) A TQFN (derate 34.5mW/NC above +70NC) ................ 2759mW Note 1: All I/O pins are clamped by internal diodes. PACKAGE THERMAL CHARACTERISTICS (Note 2) TQFN Junction-to-Ambient Thermal Resistance (q ) ..........29C/W JA Junction-to-Case Thermal Resistance (q ) .................2C/W JC Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-lay- er board. For detailed information on package thermal considerations, refer to www.maximintegrated.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 = 200nF coupling capacitor on each output, R = 50I on each output, T = 0NC to +70NC, unless oth- CC CL L A erwise 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 OEQ2 = GND, OEQ1 = GND, 205 260 OEQ0 = GND OEQ2 = GND, OEQ1 = GND, 212 270 OEQ0 = V CC OEQ2 = GND, OEQ1 = V , CC 214 270 OEQ0 = GND OEQ2 = GND, OEQ1 = V , CC 247 305 OEQ0 = V CC Supply Current I EN = V mA CC CC OEQ2 = V , OEQ1 = GND, CC 213 270 OEQ0 = GND OEQ2 = V , OEQ1 = GND, CC 263 330 OEQ0 = V CC OEQ2 = V OEQ1 = V , CC, CC 276 345 OEQ0 = GND OEQ2 = V , OEQ1 = V , CC CC 328 410 OEQ0 = V CC 2 Maxim Integrated