MAX9129 19-2100 Rev 0 8/01 Quad Bus LVDS Driver with Flow-Through Pinout General Description Features The MAX9129 is a quad bus low-voltage differential sig- Drive LVDS Levels into a 27 Load naling (BLVDS) driver with flow-through pinout. This 1ns (0% to 100%) Minimum Transition Time device is designed to drive a heavily loaded multipoint Reduces Reflections bus with controlled transition times (1ns 0% to 100% minimum) for reduced reflections. The MAX9129 Guaranteed 200Mbps (100MHz) Data Rate accepts four LVTTL/LVCMOS input levels and trans- Enable Pins for High-Impedance Output lates them to output levels of 250mV to 450mV (stan- dard LVDS levels) into a 27 load at speeds up to High-Impedance Outputs when Powered Off 200Mbps (100MHz). Glitch-Free Power-Up and Power-Down The power-on reset ensures that all four outputs are disabled and high impedance during power up and Hot Swappable power down. The outputs can be set to high imped- Flow-Through Pinout ance by two enable inputs, EN and EN, thus dropping the device to a low-power state of 11mW. The enables Available in Tiny QFN Package (50% Smaller are common to all four drivers. The flow-through pinout than TSSOP) simplifies PC board layout and reduces crosstalk by Single +3.3V Supply keeping the LVTTL/LVCMOS inputs and BLVDS outputs separated. The MAX9129 operates from a single +3.3V supply and is specified for operation from -40C to +85C. It is available in 16-pin QFN and TSSOP packages. Refer to Ordering Information the MAX9121 data sheet for a quad LVDS line receiver with flow-through pinout. PART TEMP. RANGE PIN-PACKAGE MAX9129EGE -40C to +85C 16 QFN Applications MAX9129EUE -40C to +85C 16 TSSOP Cell Phone Base Stations Add/Drop Muxes Digital Cross-Connects Functional Diagram appears at end of data sheet. DSLAMs Pin Configurations appear at end of data sheet. Network Switches/Routers Backplane Interconnect Clock Distribution Typical Applications Circuit CARD 1A CARD 10A CARD 1B CARD 2B MAX9129 MAX9121 MAX9129 MAX9121 MAX9129 MAX9121 MAX9129 MAX9121 BUS A R t R t BUS B = TERMINATION MULTIPOINT FULL-DUPLEX TRANSMIT AND RECEIVE BUS R R RESISTOR t t R t 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.Quad Bus LVDS Driver with Flow-Through Pinout ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +4.0V Storage Temperature Range .............................-65C to +150C CC IN , EN, EN to GND....................................-0.3V to (V + 0.3V) Maximum Junction Temperature .....................................+150C CC OUT +, OUT - to GND..........................................-0.3V to +4.0V Operating Temperature Range ...........................-40C to +85C Short-Circuit Duration (OUT +, OUT -) .....................Continuous ESD Protection Continuous Power Dissipation (T = +70C) Human Body Model, OUT +, OUT - ...............................8kV A 16-Pin QFN (derate 18.5mW/C above +70C) .........1481mW Lead Temperature (soldering, 10s) .................................+300C 16-Pin TSSOP (derate 9.4mW/C above +70C) .........755mW 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 = +3.0V to +3.6V, R = 27 1%, EN = high, EN = low, T = -40C to +85C, unless otherwise noted. Typical values are at V CC L A CC = +3.3V, T = +25C.) (Notes 1, 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS BLVDS OUTPUTS (OUT +, OUT -) Differential Output Voltage V Figure 1 250 371 450 mV OD Change in Magnitude of V OD Between Complementary Output V Figure 1 1 25 mV OD States Offset Voltage V Figure 1 1.125 1.29 1.375 V OS Change in Magnitude of V OS Between Complementary Output V Figure 1 5 25 mV OS States Output High Voltage V 1.465 1.6 V OH Output Low Voltage V 0.90 1.085 V OL Differential Output Short-Circuit I V = 0 20 mA OSD OD Current OUT + = 0 at IN = V or CC Output Short-Circuit Current I -20 mA OS OUT - = 0 at IN = 0 Disabled, OUT + = 0 or V , OUT - = 0 CC Output High-Impedance Current I -1 1 A OZ or V CC V = 0 or open, EN = EN = IN = 0, CC Power-Off Output Current I -1 1 A OFF OUT + = 0 or 3.6V, OUT - = 0 or 3.6V Output Capacitance C C apac it ance from OUT + or O U T - to GN D 4.3 pF OUT INPUTS (IN , EN, EN) High-Level Input Voltage V 2.0 V V IH CC Low-Level Input Voltage V GND 0.8 V IL Input Current I IN , EN, EN = 0 or V -15 15 A IN CC SUPPLY CURRENT Supply Current I R = 27 , IN = V or 0 for all channels 58 70 mA CC L CC Disabled Supply Current I Disabled 3.2 5 mA CCZ 2 MAX9129