LT1675/LT1675-1 250MHz, Triple and Single RGB Multiplexer with Amplifiers configured for a fixed gain of 2, eliminating six external FEATURES gain setting resistors. The SPDT switches are designed to 100MHz Pixel Switching be break-before-make to minimize unwanted signals cou- 3dB Bandwidth: 250MHz pling to the input. Channel Switching Time: 2.5ns The LT1675-1 is a single version with two inputs, a single Expandable to Larger Arrays output and is ideal for a single channel application such as Drives Cables Directly video sync. High Slew Rate: 1100V/s Low Switching Transient: 50mV The key to the LT1675 fast switching speed is Linear Shutdown Supply Current: 100A Technologys proprietary high speed bipolar process. This Output Short-Circuit Protected MUX can toggle between sources in excess of 100MHz, Available in Small 16-Pin SSOP Package has a slew rate over 1000V/s and has a 3dB bandwidth U of 250MHz. Power supply requirements are 4V to 6V APPLICATIO S and power dissipation is only 300mW on 5V, or 100mW for the LT1675-1. The expandable feature uses the disable RGB Switching pin to reduce the power dissipation to near 0mW in the off Workstation Graphics parts. Pixel Switching Unlike competitive solutions that are in bulky high pin Coaxial Cable Drivers count packages, the LT1675 is in a 16-lead narrow body High Speed Signal Processing SSOP. This small footprint, the size of an SO-8, results in a very clean high performance solution. The LT1675-1 is DESCRIPTIO available in the tiny MSOP and the SO-8. The LT 1675 is a high speed RGB multiplexer designed , LTC and LT are registered trademarks of Linear Technology Corporation. for pixel switching and fast workstation graphics. All other trademarks are the property of their respective owners. Included on chip are three SPDT switches and three current feedback amplifiers. The current feedback ampli- fiers drive double-terminated 50 or 75 cables and are TYPICAL APPLICATIO High Speed RGB MUX Clocking Between 2 DC Levels at 100MHz LT1675 3V + RED 1 +1 V LOGIC 75 CABLE 1V/DIV INPUT 75 PIN 10 +2 V OUT RED GREEN 1 +1 75 0V 75 CABLE 1V 75 RED +2 V OUT GREEN BLUE 1 +1 OUT 500mV/DIV 75 75 0V CABLE 75 RED 2 +1 +2 V OUT BLUE 75 RED INPUT 1 = 0VDC, RED INPUT 2 = 1VDC 75 MEASURED BETWEEN 50 BACK TERMINATION AND 50 LOAD V +1 GREEN 2 1675 TA02 75 SELECT RGB1/RGB2 BLUE 2 +1 ENABLE 75 1675 TA01 16751fb 1 U ULT1675/LT1675-1 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage ..................................................... 6.3V Operating Temperature Range (Note 3) .. 40C to 85C Inputs, ENABLE and SELECT, Current ................ 20mA Storage Temperature Range ................. 65C to 150C Output Short-Circuit Duration (Note 2) .........Continuous Junction Temperature (Note 4)............................ 150C Specified Temperature Range ..................... 0C to 70C Lead Temperature (Soldering, 10 sec).................. 300C PACKAGE/ORDER INFORMATION TOP VIEW TOP VIEW TOP VIEW + + 1 16 V RED 1 V 1 8 V + IN1 V 1 8 V IN1 GND 2 7 ENABLE 2 15 V GREEN 1 OUT RED V 3 6 V GND ENABLE 2 7 IN2 OUT 3 14 V BLUE 1 OUT GREEN V 4 5 SELECT V 3 6 V IN2 OUT 4 13 V GND OUT BLUE MS8 PACKAGE V 4 5 SELECT 5 12 V GND 8-LEAD PLASTIC MSOP 6 11 V RED 2 T = 150C, = 250C/ W S8 PACKAGE JMAX JA 7 10 SELECT 8-LEAD PLASTIC SO GREEN 2 8 9 ENABLE BLUE 2 T = 150C, = 150C/ W JMAX JA GN PACKAGE 16-LEAD PLASTIC SSOP NARROW T = 150C, = 120C/ W JMAX JA ORDER PART MS8 PART ORDER PART S8 PART ORDER PART GN PART NUMBER MARKING NUMBER MARKING NUMBER MARKING LT1675CMS8-1 LTGX LT1675CS8-1 16751 LT1675CGN 1675 Order Options Tape and Reel: Add TR Lead Free: Add PBF, Lead Free Tape and Reel: Add TRPBF, Lead Free Part Marking: