1 www.pericom.com pi6c49x0204b rev a 07/20/15 pi6c49x0204b block diagram description the pi6c49x0204b is a low skew, 1-to-4 fanout buffer. guaranteed output and part-to-part skew characteristics make the pi6c49x0204b ideal for those clock distribution applications demanding well defned performance and repeatability. low skew, 1-to-4 lvcmos/lvttl fanout buffer features ? ? four lvcmos / lvttl outputs ? ? lvcmos / lvttl clock input ? ? clk can accept the following input levels: lvcmos, lvttl ? ? maximum output frequency: 250mhz ? ? additive phase jitter, rms: 0.173ps (typical) @ 3.3v ? ? output skew: 45ps (maximum) @ 3.3v ? ? part-to-part skew: 500ps (maximum) ? ? small 8 lead soic package saves board space ? ? full 3.3v, 2.5v, 1.8v operation mode, or 3.3v/ 2.5v/ 1.8v core with 2.5v, 1.8v, 1.5v supply modes ? ? -40c to 85c ambient operating temperature q0 pulldown clk q1 q2 q3 pin assignment 1 5 6 7 8 4 3 2 v dd gnd q3 clk v ddo q2 q1 q0 15-0078
2 www.pericom.com pi6c49x0204b rev a 07/20/15 pin# pin name pin ty pe pin description 1 v ddo power output supply pin. 2 v dd power positive supply pin. 3 clk input pulldown lvcmos / lvttl clock input. 4 gnd power power supply ground. 5 q0 output single clock output. lvcmos / lvttl interface levels. 6 q1 output single clock output. lvcmos / lvttl interface levels. 7 q2 output single clock output. lvcmos / lvttl interface levels. 8 q3 output single clock output. lvcmos / lvttl interface levels. note: pulldown refers to internal input resistors. see table 2, pin characteristics , for typical values. pin descriptions symbol parameter test conditions min. ty pica l max. units c in input capacitance 4 pf c pd power dissipation capacitance (per output) v dd , v ddo = 3.465v 15 pf r pulldown input pulldown resistor 51 k r out output impedance v dd , v ddo >2.5v 5 7 12 pin characteristics pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
3 www.pericom.com pi6c49x0204b rev a 07/20/15 maximum ratings (above which useful life may be impaired. for user guidelines, not tested.) supply voltage, v dd ..................................... 4.6v inputs, v i ................................. C0.5v to v dd +0.5v output, v o ............................... C0.5v to v ddo +0.5v package thermal impedance, ja ............ 112.7c/w (0 lfpm) storage temperature, t stg ...................... -65c to 150c esd protection (hbm) .................................................... 2000v note: stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these ratings are stress specifcations only. functional operation of product at these conditions or any condi - tions beyond those listed in the dc characteristics or ac characteristics is not implied. exposure to absolute maximum rating conditions for extended periods may affect product reliability. table 3a. power supply dc characteristics, t a = -45c to 85c o t coto . t . . t vdd core supply voltage 3.3v operation 3.135 3.3 3.465 v 2.5v operation 2.375 2.5 2.625 1.8v operation 1.6 1.8 2.0 vddo output power supply voltage 3.3v supply 3.135 3.3 3.465 v 2.5v supply 2.375 2.5 2.625 1.8v supply 1.6 1.8 2.0 1.5v supply 1.425 1.5 1.575 i dd power supply current 2 ma i ddo output supply current 25mhz 12 ma 200mhz 70 pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
4 www.pericom.com pi6c49x0204b rev a 07/20/15 lvcmos / lvttl dc characteristics, t a = -45c to 85c o t coto . t . . t v ih input high voltage vdd = 3.3v 2.3 vdd+0.3 v vdd = 2.5v 1.7 vdd+0.3 v il input low voltage vdd = 3.3v -0.3 0.8 v vdd = 2.5v -0.3 0.8 i ih input high current vdd = v in = 3.465v 150 a i il input low current vdd = 3.465v, v in = 0v -5 a v oh output high voltage vddo = 3.3v 50 to vddo /2 2.6 v i oh = -100a 2.9 v vddo = 2.5v 50 to vddo /2 1.8 v i oh = -100a 2.2 v vddo = 1.8v 50 to vddo /2 1.1 v i oh = -100a 1.5 v vddo = 1.5v 50 to vddo /2 0.8 v i oh = -100a 1.2 v v ol output high voltage vddo = 3.3v 50 to vddo /2 0.5 v i oh = -100a 0.2 v vddo = 2.5v 50 to vddo /2 0.5 v i oh = -100a 0.2 v vddo = 1.8v 50 to vddo /2 0.5 v i oh = -100a 0.2 v vddo = 1.5v 50 to vddo /2 0.5 v i oh = -100a 0.2 v pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
5 www.pericom.com pi6c49x0204b rev a 07/20/15 ac characteristics, vdd = 3.3v 5%, t a = -45c to 85c o t coto . t . . t f max output frequency vddo = 3.3v 250 mhz vddo = 2.5v 250 vddo = 1.8v 250 vddo = 1.5v 250 tp lh propagation delay, low-to-high; note 1 vddo = 3.3v, ? 250mhz 1.2 1.9 ns vddo = 2.5v, ? 250mhz 1.5 2.5 vddo = 1.8v, ? 250mhz 1.8 3.1 vddo = 1.5v, ? 250mhz 1.9 3.8 tsk (o) output skew; note 2 25 100 ps tsk (pp) part-to-part skew; note 3 250 500 ps t r output rise time note 4 vddo = 3.3v 300 800 ps vddo = 2.5v 300 1300 vddo = 1.8v 500 1300 vddo = 1.5v 800 1500 t f output fall time note 4 vddo = 3.3v 300 800 ps vddo = 2.5v 300 1300 vddo = 1.8v 500 1300 vddo = 1.5v 800 1500 odc output duty cycle ? 133mhz 45 55 % 133mhz < ? 200mhz 40 60 % t jit additive rms jitter 156.25mhz (@12khz to 20mhz) 0.18 ps 125mhz (@12khz to 20mhz) 0.05 ps parameters measured at f max unless otherwise noted. note 1: measured from vdd /2 of the input to vddo /2 of the output. note 2: defned as skew between outputs at the same supply voltage and with equal load conditions. measured at vddo /2. note 3: defned as skew between outputs on diferent devices operating at the same supply voltages and with equal load conditions. using the same type of inputs on each device, the outputs are measured at vddo /2. note 4: defned from 20% to 80% pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
6 www.pericom.com pi6c49x0204b rev a 07/20/15 ac characteristics, vdd = 2.5v 5%, t a = -45c to 85c o t coto . t . . t f max output frequency vddo = 2.5v 250 mhz vddo = 1.8v 250 vddo = 1.5v 250 tp lh propagation delay, low-to-high; note 1 vddo = 2.5v, ? 250mhz 1.6 2.5 ns vddo = 1.8v, ? 250mhz 2.5 3.2 vddo = 1.5v, ? 250mhz 3.3 4.5 tsk (o) output skew; note 2 50 90 ps tsk (pp) part-to-part skew; note 3 250 800 ps t r output rise time note 4 vddo = 2.5v 300 800 ps vddo = 1.8v 500 1200 vddo = 1.5v 700 1200 t f output fall time note 4 vddo = 2.5v 300 800 ps vddo = 1.8v 500 1200 vddo = 1.5v 700 1200 odc output duty cycle ? 133mhz 45 55 % 133mhz < ? 200mhz vddo 1.5v 40 60 % t jit additive rms jitter 156.25mhz (@12khz to 20mhz) 0.15 ps 125mhz (@12khz to 20mhz) 0.05 ps parameters measured at f max unless otherwise noted. note 1: measured from vdd /2 of the input to vddo /2 of the output. note 2: defned as skew between outputs at the same supply voltage and with equal load conditions. measured at vddo /2. note 3: defned as skew between outputs on diferent devices operating at the same supply voltages and with equal load conditions. using the same type of inputs on each device, the outputs are measured at vddo /2. note 4: defned from 20% to 80% pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
7 www.pericom.com pi6c49x0204b rev a 07/20/15 ac characteristics, vdd = 1.8v 5%, t a = -45c to 85c o t coto . t . . t f max output frequency vddo = 1.8v 250 mhz vddo = 1.5v 250 tp lh propagation delay, low-to-high; note 1 vddo = 1.8v, ? 250mhz 3.5 4.8 ns vddo = 1.5v, ? 250mhz 2.7 3.8 tsk (o) output skew; note 2 50 90 ps tsk (pp) part-to-part skew; note 3 250 800 ps t r output rise time note 4 vddo = 1.8v 300 1000 ps vddo = 1.5v 500 1400 t f output fall time note 4 vddo = 1.8v 300 1000 ps vddo = 1.5v 500 1400 odc output duty cycle ? 133mhz 45 55 % 133mhz < ? 200mhz vddo 1.6v 40 60 % vddo < 1.6v ? 133mhz 40 60 % t jit additive rms jitter 156.25mhz (@12khz to 20mhz) 0.1 ps 125mhz (@12khz to 20mhz) 0.1 ps parameters measured at f max unless otherwise noted. note 1: measured from vdd /2 of the input to vddo /2 of the output. note 2: defned as skew between outputs at the same supply voltage and with equal load conditions. measured at vddo /2. note 3: defned as skew between outputs on diferent devices operating at the same supply voltages and with equal load conditions. using the same type of inputs on each device, the outputs are measured at vddo /2. note 4: defned from 20% to 80% pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
8 www.pericom.com pi6c49x0204b rev a 07/20/15 phase noise and additive jitter output phase noise plot provided below. additive jitter = (output jitter 2 - input jitter 2 ) 3.3v 5% v dd v ddo 15pf gnd confguration test load board termination for lvcmos outputs thermal information symbol description condition ja junction-to-ambient thermal resistance still air 157 c/w jc junction-to-case thermal resistance 42 c/w pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
9 www.pericom.com pi6c49x0204b rev a 07/20/15 ordering information (1-3) ordering code package code package description pi6c49x0204bwie w 8-pin, pb-free & green, soic PI6C49X0204BWIEX w 8-pin, pb-free & green, soic, tape and reel notes: 1. thermal characteristics can be found on the company web site at www .pericom.com/packaging/ 2. e = pb-free and green 3. adding an x suffx = tape/reel pericom semiconductor corporation ? 1-800-435-2336 ? www .pericom.com note: ? for latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php all trademarks are property of their respective owners. pi6c49x0204b low skew, 1-to-4 lvcmos/lvttl fanout buffer 15-0078
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