general description the max9232 deserializes three lvds serial-data inputs into 21 single-ended lvcmos/lvttl outputs. a separate parallel-rate lvds clock provides the timing for deserialization. the max9232 features spread-spec- trum capability, allowing the output data and clock frequency to spread over a specified range to reduce emi. the single-ended data and clock outputs are pro- grammable for a frequency spread of ?%, ?%, or no spread. the spread-spectrum function is also available when the max9232 operates in non-dc-balanced mode. the modulation rate of the spread is 32khz for a 33mhz lvds clock input and scales linearly with fre- quency. using vsync on rxout13 and hsync on rxout6, a reset of the spread-spectrum fifo is per- formed every frame, preventing fifo overflow and underflow. the single-ended outputs have a separate supply, allowing +1.8v to +5v output logic levels. the max9232 features programmable dc balance, allowing isolation between a serializer and deserializer using ac-coupling. the max9232 operates with the max9209/max9213 serializer and has a falling-edge strobe. the lvds inputs meet iso 10605 esd specifi- cations with ?5kv air-gap discharge and ?kv contact discharge ratings. the max9232 is available in a 48-pin tssop package and operates within the -40? to +85? temperature range. applications automotive navigation systems automotive dvd entertainment systems digital copiers laser printers features programmable 4%, 2%, or off spread-spectrum output for reduced emi programmable dc balance or non-dc balance dc balance allows ac-coupling for wider input common-mode voltage range spread spectrum operates in dc-balanced or non- dc-balanced mode fifo reset during vertical blanking 16mhz-to-34mhz (dc-balanced) and 20mhz-to- 40mhz (non-dc-balanced) operation high-impedance outputs when pwrdwn is low allow output busing fail-safe inputs in non-dc-balanced mode separate output supply pins allow interface to +1.8v, +2.5v, +3.3v, and +5v logic lvds inputs meet iso 10605 esd protection at 25kv air discharge and 8kv contact discharge lvds inputs meet iec 61000-4-2 level 4 esd protection at 15kv air and 8kv contact discharge lvds inputs conform to ansi tia/eia-644 standard +3.3v main power supply max9232 programmable spread-spectrum and dc-balance 21-bit deserializer ________________________________________________________________ maxim integrated products 1 48 47 46 45 44 43 42 41 40 39 1 2 3 4 5 6 7 8 9 10 v cco rxout16 rxout15 rxout14 rxout19 gnd rxout18 rxout17 top view max9232 gnd rxout13 v cc rxout12 rxin0- dcb ssg rxout20 rxout11 rxout10 rxin1- rxin0+ 38 37 36 35 34 33 32 31 30 29 gnd rxout9 v cco rxout8 rxout7 rxout6 gnd rxout5 rxout4 rxout3 11 12 13 14 15 16 17 18 19 rxin2- lvdsgnd lvdsv cc rxin1+ lvdsgnd rxclkin+ rxclkin- rxin2+ pllv cc pllgnd pllgnd tssop 20 21 rxout0 24 28 25 v cco 22 27 23 rxclkout 26 rxout1 rxout2 gnd pwrdwn pin configuration ordering information xx-xxxx; rev 0; 9/05 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. part temp range pin-package pkg code MAX9232EUM -40 c to +85 c 48 tssop u48-1
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