MAX9310A 19-2542 Rev 0 7/02 1:5 Clock Driver with Selectable LVPECL Inputs/Single-Ended Inputs and LVDS Outputs General Description Features The MAX9310A is a fast, low-skew 1:5 differential driver Guaranteed 1.0GHz Operating Frequency with selectable LVPECL inputs and LVDS outputs, 8.0ps Output-to-Output Skew designed for clock distribution applications. This device features an ultra-low propagation delay of 340ps with 340ps Propagation Delay 48mA of supply current. Accepts LVPECL and Differential HSTL Inputs The MAX9310A operates from a 3V to 3.6V power sup- ply for use in 3.3V systems. A 2:1 input multiplexer is Synchronous Output Enable/Disable used to select one of two differential inputs. The input Two Selectable Differential Inputs selection is controlled through the CLKSEL pin. 3V to 3.6V Supply Voltage This device features a synchronous enable function. The MAX9310A LVPECL inputs can be driven by either On-Chip Reference for Single-Ended Operation a differential or single-ended signal. A V reference BB ESD Protection: 2kV (Human Body Model) voltage output is provided for use with single-ended inputs. The device can also accept differential HSTL Input Bias Resistors Drive Output Low for Open signals. Inputs The MAX9310A is offered in a space-saving 20-pin TSSOP package and operates over the extended tem- perature range from -40C to +85C. Applications Data and Clock Drivers and Buffers Ordering Information Central-Office Backplane Clock Distribution PART TEMP RANGE PIN-PACKAGE DSLAM MAX9310AEUP -40C to +85C 20 TSSOP Base Stations ATE Pin Configuration Functional Diagram appears at end of data sheet. TOP VIEW Q0 1 20 V Typical Application Circuit CC QO 2 19 EN Q1 3 18 V CC Q1 4 17 CLK1 RECEIVER MAX9310A Q2 5 16 CLK1 MAX9310A Z = 50 O Q2 6 15 V BB Q Q3 7 14 CLK0 Q3 8 13 CLK0 Z = 50 O 100 Q Q4 9 12 CLKSEL Q4 10 11 GND TSSOP Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.1:5 Clock Driver with Selectable LVPECL Inputs/Single-Ended Inputs and LVDS Outputs ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +4.1V Multilayer PC Board CC EN, CLKSEL, CLK , CLK , to GND............-0.3V to (V + 0.3V) 20-Pin TSSOP ...........................................................+91C/W CC CLK to CLK .........................................................................3V Junction-to-Ambient Thermal Resistance with 500LFPM Continuous Output Current.................................................24mA Airflow Single-Layer PC board Surge Output Current..........................................................50mA 20-Pin TSSOP ...........................................................+96C/W V Sink/Source Current ...............................................0.65mA Junction-to-Case Thermal Resistance BB Continuous Power Dissipation (T = +70C) 20-Pin TSSOP ...........................................................+20C/W A Single-Layer PC Board Operating Temperature Range .......................... -40C to +85C 20-Pin TSSOP (derate 7.69mW/C above +70C) ......615mW Junction Temperature......................................................+150C Multilayer PC Board Storage Temperature Range .............................-65C to +150C 20-Pin TSSOP (derate 11mW/C above +70C) .........879mW ESD Protection Junction-to-Ambient Thermal Resistance in Still Air Human Body Model (inputs and outputs) .......................2kV Single-Layer PC Board Lead Temperature (soldering, 10s) .................................+300C 20-Pin TSSOP .........................................................+130C/W 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. DC ELECTRICAL CHARACTERISTICS (V - GND = 3V to 3.6V, outputs terminated with 100 1%, unless otherwise noted. Typical values are at V - GND = 3.3V, V = CC CC IHD V - 1.0V, V = V - 1.5V, unless otherwise noted.) (Notes 1, 2, and 3) CC ILD CC -40C +25C +85C PARAMETER SYMBOL CONDITIONS UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX SINGLE-ENDED INPUTS (CLKSEL, EN) Input High V - V - V - V - V - V - CC CC CC CC CC CC V V IH Voltage 1.165 0.88 1.165 0.88 1.165 0.88 Input Low V - V - V - V - V - V - CC CC CC CC CC CC V V IL Voltage 1.81 1.475 1.81 1.475 1.81 1.475 V , IH(MAX) Input Current I -10 +70 -10 +70 -10 +70 A IN V IL(MAX) DIFFERENTIAL INPUTS (CLK , CLK ) Single-Ended V - V - V - V - V - V - CC CC CC CC CC CC Input High V Figure 1 V IH 1.125 0.88 1.165 0.88 1.165 0.88 Voltage Single-Ended V - V - V - V - V - V - CC CC CC CC CC CC Input Low V Figure 1 V IL 1.81 1.475 1.81 1.475 1.81 1.495 Voltage Differential Input V Figure 2 1.2 V 1.2 V 1.2 V V IHD CC CC CC High Voltage Differential Input V - V - V - CC CC CC V Figure 2 GND GND GND V ILD Low Voltage 0.095 0.095 0.095 Differential Input V V - V 0.095 3.0 0.095 3.0 0.095 3.0 V ID IHD ILD Voltage CLK , or CLK = Input Current I , I -100 +100 -100 +100 -100 +100 A IH IL V or V IHD ILD 2 MAX9310A