datasheet zero delay low skew buffer and multiplier ics671-01 idt? / ics? zero delay low skew buffer and multiplier 1 ics671-01 rev e 110409 description the ics671-01 is a low phase noise, high speed pll based, 8 output, low skew zero delay buffer and multiplier. based on idt?s proprietary low jitter phase locked loop (pll) techniques, the device provides eight low skew outputs at speeds up to 160 mhz at 3.3v. the part includes a bank of six outputs running at either x2 or x4 mode, one output running at either x2, x4, or x4 mode, and one additional output running at either x1, x2, or x4 mode. for normal operation as a zero delay buffer, any output clock is tied to the fbin pin. idt manufactures the largest variety of clock generators and buffers and is the largest clock supplier in the world. features ? packaged in 16 pin soic ? available in pb (lead) free package ? clock outputs from 5 to 160 mhz ? zero input-output delay ? integrated x2 or x4 selections, and x5 for clk7 ? eight low-skew (<250 ps) outputs ? full cmos outputs with 25 ma output drive capability at ttl levels ? tri-state mode for board-level testing ? advanced, low power, sub-micron cmos process ? operating voltage of 3.3v or 5v note: eol for non-green parts to occur on 5/13/10 per pdn u-09-01 block diagram clk4 clk5 clk3 clk6 clk7 clk2 clk1 clk8 control logic s1, s0 x2, x4, or x5 pll clkin fbin 2 vdd 2 gnd 2
ics671-01 zero delay low skew buffer and multiplier zdb and multiplier idt? / ics? zero delay low skew buffer and multiplier 2 ics671-01 rev e 110409 pin assignment output clock mode select table note 1. outputs are in high impedence state note 2: in s1:s0 = 01 mode, only the x1 output on clk 8 will be zero delay. the x2 and x5 outputs can power-up in different states so the skew relationship is not defined. pin descriptions 12 1 11 2 10 clkin fbin 3 9 clk1 4 clk2 clk8 5 vdd 6 clk7 7 gnd 8 clk3 vdd gnd clk6 clk4 clk5 s0 s1 16 15 14 13 16 pin narrow (150 mil) soic s1 s0 clk1:6 clk7 clk8 input range 0 0 tri-state (note 1) tri-state (note 1) tri-state (note 1) - 0 1 x2 (note 2) x5 (note 2) x1 5 to 30 mhz 1 0 x2 x2 x2 15 to 80 mhz 1 1 x4 x4 x4 7.5 to 40 mhz pin number pin name pin type pin description 1 clkin input clock input. 2-3, 6-7, 10-11 clk1:6 output clock outputs 1:6. see table above. 4 vdd power power supply. connect both pins to the same voltage (either 3.3v or 5v). 5 gnd power connect to ground. 8 s0 input select input 0. see table above. 9 s1 input select input 1. see table above. 12 gnd power connect to ground. 13 vdd power power supply. connect both pins to the same voltage (either 3.3v or 5v). 14 clk7 output clock output 7. see table above. 15 clk8 output clock output 8. see table above. normally use this clock as feedback. 16 fbin input feedback input. connect to clk8 under normal operations.
ics671-01 zero delay low skew buffer and multiplier zdb and multiplier idt? / ics? zero delay low skew buffer and multiplier 3 ics671-01 rev e 110409 external components the ics671-01 requires a minimum number of external components for proper operation. decoupling capacitors of 0.01mf should be connected between vdd and gnd on pins 4 and 5, and vdd and gnd on pins 13 and 12, as close to the device as possible. a series termination resistor of 33 ? may be used to each clock output pin to reduce reflections. absolute maximum ratings stresses above the ratings listed below can cause permanent damage to the ics671-01. these ratings, which are standard values for idt commercially rated parts, are stress ratings only. functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for exte nded periods can affect product reliability. electrical parameters are guaranteed only over the recommended operating temperature range. recommended operation conditions dc electrical characteristics vdd=3.3v 10%, ambient temperature 0 to +70 c, unless stated otherwise item rating supply voltage, vdd 7v all inputs and outputs -0.5v to vdd+0.5v clkin and fbin inputs -0.5v to 5.5v electrostatic discharge 2000 v ambient operating temperature 0 to +70 c storage temperature -65 to +150 c junction temperature 150 c soldering temperature 260 c parameter min. typ. max. units ambient operating temperature 0 +70 c power supply voltage (measured in respect to gnd) +3.13 +5.50 v parameter symbol conditions min. typ. max. units operating voltage vdd 3.13 5.5 v input high voltage v ih clkin vdd/2+1 vdd/2 v input low voltage v il clkin vdd/2 vdd/2-1 v input high voltage v ih 2v input low voltage v il 0.8 v input low current i il vin = 0v 50 a input high current i ih vin = vdd 100 a output high voltage v oh i oh = -25 ma 2.4 v
ics671-01 zero delay low skew buffer and multiplier zdb and multiplier idt? / ics? zero delay low skew buffer and multiplier 4 ics671-01 rev e 110409 ac electrical characteristics vdd = 3.3v 10%, ambient temperature 0 to +70 c, c load at clk = 15 pf, unless stated otherwise note 1: with clkin = 20 mhz, fbin to clk8, all outputs at 40 mhz. note 2:with clkin = 80 mhz, fbin to clk8, all outputs at 160 mhz. note 3: these specs do not apply to mode 01. thermal characteristics (16 pin soic) ouput low voltage v ol i ol = 25ma 0.4 v output high voltage, cmos level v oh i oh = -8 ma vdd-0.4 v operating supply current idd no load, s1 = 1, s0 = 0, note 1 25 ma no load, s1 = 1, s0 =0 note 2 power down supply current iddpd clkin = 0, s0 = 0, s1 = 0 500 a short circuit current i os each output 50 ma input capacitance c in s0, s1, fbin 7 pf parameter symbol conditions min. typ. max. units parameter symbol conditions min. typ. max. units input clock frequency f in see table on page 2 5 80 mhz output clock frequency see table on page 2 5 160 mhz output rise time t or 0.8 to 2.0v, cl=30 pf 1.5 ns output fall time t of 2.0 to 0.8v, cl=30 pf 1.5 ns output clock duty cycle t dc measured at vdd/2 40 50 60 % device to device skew rising edges at vdd/2, note 3 700 ps output to output skew rising edges at vdd/2, note 3 250 ps input to output skew rising edges at vdd/2, fbin to clk8 350 ps maximum absolute jitter 15 pf 300 ps cycle to cycle jitter 30 pf loads 500 ps pll lock time note 3 1.0 ms parameter symbol conditions min. typ. max. units thermal resistance junction to ambient ja still air 120 c/w ja 1 m/s air flow 115 c/w ja 3 m/s air flow 105 c/w thermal resistance junction to case jc 58 c/w
ics671-01 zero delay low skew buffer and multiplier zdb and multiplier idt? / ics? zero delay low skew buffer and multiplier 5 ics671-01 rev e 110409 package outline and package dimensions (16 pin soic, 150 mil. narrow body) package dimensions are kept current with jedec publication no. 95 ordering information *note: eol for non-green parts to occur on 5/13/10 per pdn u-09-01 parts that are ordered with a "lf" suffix to the part number are the pb-free configur ation and are rohs compliant. while the information presented herein has been checked for both ac curacy and reliability, integrat ed device technology (idt) a ssumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. no other circuits, patents, or licenses are implied. this product is intended for us e in normal commercial applications. any ot her applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommen ded without additional pr ocessing by idt. i dt reserves the right to change any circuitry or specificat ions without notice. idt does not authorize or warrant any idt product for use in life suppor t devices or critical medical instruments. part / order number marking shipping packaging package temperature 671m-01* ics671m-01 tubes 16-pin soic 0 to +70 c 671M-01T* ics671m-01 tape and reel 16-pin soic 0 to +70 c 671m-01lf ics671m-01lf tubes 16-pin soic 0 to +70 c 671m-01lft ics671m-01lf tape and reel 16-pin soic 0 to +70 c index area 1 2 16 d e seating plane a1 a e - c - b .10 (.004) c c l h h x 45 millimeters inches symbol min max min max a 1.35 1.75 .0532 .0688 a1 0.10 0.25 .0040 .0098 b 0.330.51.013.020 c 0.19 0.25 .0075 .0098 d 9.80 10.00 .3859 .3937 e 3.80 4.00 .1497 .1574 e 1.27 basic 0.050 basic h 5.80 6.20 .2284 .2440 h 0.250.50.010.020 l 0.401.27.016.050 0 8 0 8
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