EVALUATION KIT AVAILABLE MAX14983E Enhanced 1:2 VGA Mux with Monitor Detection and Priority Port Logic General Description Benefits and Features The MAX14983E integrates high-bandwidth analog switches, Design Flexibility level-translating buffers, and 5V power switches to Graphics Controller Port is Protected when implement a complete 1:2 multiplexer for VGA monitors. V = 0V CC DDC Switches Limit Voltage to Low-Voltage Supply The device switches graphics signals between a control- ler and two outputs. Integrated pullup resistors (2.2k, Internal +2.5V Regulator typ) are provided on the monitor-side display data channel High Level of Integration for Enhanced Performance (DDC) signal lines. Low 5.5pF (typ) RGB Capacitance The device features a simple power interface that 2.0ns (typ) t /t with 10pF, 2.2k Load on Monitor- R F Side SYNC Signals operates with a single +5V supply input. Two integrated power switches with current limiting and reverse-current Source and Sink 8mA While Meeting Speed Requirements protection pass the +5V supply to external loads with 11kV Human Body Model (HBM) minimal voltage drop. Saves Space on Board The horizontal and vertical synchronization (HSYNC/ Internal Power Switches VSYNC) buffers shift logic levels to support +2.5V to Pass +5V with 300mV (max) IR Drop +5.0V CMOS or TTL-compatible graphics controllers Short-Circuit/Thermal/Reverse-Current while meeting the VESA drive capability requirement of Protection 8mA. An internal 2.5V regulator translates the DDC 5mm x 5mm, 32-Pin TQFN Package voltage levels to be compatible with low-voltage graphics controllers. Typical Application Circuit The device also features monitor-detect outputs and enable inputs that allow monitor switching to operate either +5V automatically or with inputs from the graphics controller. The MAX14983E is available in a 32-pin (5mm x 5mm) +2.5V 0.1F TQFN package, and is specified over the -40C to +85C extended temperature range. 3 3 V CC Applications R0, G0, B0 R1, G1, B1 2 2 HSYNC0, VSYNC0 HSYNC1, VSYNC1 Servers GRAPHICS VGA 2 2 CONTROLLER PORT 1 KVM Switches SCL0, SDA0 SCL1, SDA1 Computing S5V1 MDOR Graphics Cards 1F +5V +5V MAX14983E 3 R2, G2, B2 2 MD1 HSYNC2, VSYNC2 VGA Ordering Information appears at end of data sheet. 2 MD2 PORT 2 SCL2, SDA2 EN1 S5V2 EN2 1F REF 105 GND 19-5935 Rev 1 9/17MAX14983E Enhanced 1:2 VGA Mux with Monitor Detection and Priority Port Logic Absolute Maximum Ratings (Voltages referenced to GND.) Continuous Power Dissipation (T = +70C) A V , S5V1, S5V2, SDA , SCL , REF, MD , TQFN (derate 34.5mW/C above +70C)...............2758.6mW CC EN , MDOR .........................................................-0.3V to +6V Operating Temperature Range ........................... -40C to +85C HSYNC , VSYNC , R , G , B .............. -0.3V to (V + 0.3V) Junction Temperature ......................................................+150C CC Continuous Current Through R , G , B Switches .........50mA Storage Temperature Range ............................ -65C to +150C Continuous Current Through SDA , SCL Switches .......50mA Lead Temperature (soldering, 10s) .................................+300C Continuous Current Through S5V ................................750mA Soldering Temperature (reflow) .......................................+260C Peak Current Through R , G , B , SDA , SCL (10% duty cycle)........................................................ 100mA 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. Package Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( ) ..........29C/W JA Junction-to-Case Thermal Resistance ( ) ..............1.7C/W JC Note 1: 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.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = +5V 5%, T = -40C to +85C, unless otherwise noted. Typical values are at V = +5V, T = +25C.) (Note 2) CC A CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY V = 5.25V, V = V = V , REF CC EN1 EN2 CC Quiescent Current I 50 150 A Q unconnected HSYNC0 = 50kHz, VSYNC0 = 60Hz 10% Operating Current I duty cycle, R on SYNC outputs = 2k, REF 1.5 2.7 mA CC L unconnected 5V SWITCH (S5V1, S5V2 OUTPUTS) S5V Voltage Drop V I = 55mA 0.3 V S5V OUT V = 0V, V = V = 0V, V = CC EN1 EN2 S5V1 Reverse Leakage Current I 10 A L V = 5.25V, no load on S5V1 or S5V2 S5V2 R , S5V1 Pulldown Resistor V = V = 1V, V = V = V 250 S5V1 S5V2 EN1 EN2 CC R S5V2 Output Current Limit I 55 300 500 mA LIM Thermal-Shutdown Threshold T +150 C SHDN T SHDN Thermal-Shutdown Hysteresis 25 C HYS Maxim Integrated 2 www.maximintegrated.com