1 pi6c20800b features ? ? 5 lvpecl outputs ? ? up to 1.5ghz output frequency ? ? ultra low additive phase jitter: < 0.03 ps (typ) (diferential 156.25mhz, 12khz to 20mhz integration range) ? ? two selectable inputs ? ? low delay from input to output (tpd typ. 1.5ns) ? ? 2.5v/3.3v power supply ? ? industrial temperature support ? ? tssop-20 package p i 6 c 49115 0 5 - 0 4 block diagram pin configuration (20-pin tssop) description fe pi6c4911505-04 is a high performance fanout bufer device - which supports up to 1.5ghz frequency. fe device has 2 select - able clock inputs that can accept most diferential and single ended clock sources. fis device is ideal for systems that need to distribute low jitter clock signals to multiple destinations. applications ? ? networking systems including switches and routers ? ? high frequency backplane based computing and telecom platforms high performance 1:5 lvpecl fanout buffer 1 2 3 nq1 4 q2 5 q1 6 q3 7 nc 8 nq2 v dd v dd nc clk0 nclk0 nq3 20 19 18 17 16 15 14 13 q0 nq0 clk1 nen clk_sel 9q4 12 v ee 10nq4 11 nen clk0 clk_sel q 0 n q 0 q 1 n q 1 q 2 n q 2 q 3 n q 3 0 1 d le q nclk0 clk1 pulldown pullup pulldown pulldown q 4 n q 4 pulldown www.pericom.com pi6c491 1505-04 rev b 3/14/16 16-0045
2 pin # pin name ty pe description 1, 2 q0 nq0 output lvpecl output clock 3, 4 q1 nq1 output lvpecl output clock 5, 6 q2 nq2 output lvpecl output clock 7, 8 q3 nq3 output lvpecl output clock 9, 10 q4 nq4 output lvpecl output clock 11 v ee power negative power supply 12 clk_sel input clock input source selection pin 13, 17 nc - no connect 14, 15 clk0 nclk0 input diferential clock input 16 clk1 input cmos clock input 18, 20 v dd power power supply 19 nen input synchronizing clock enable. when low, clock outputs enabled. when high, q outputs are forced low, nq outputs forced high. pinout table www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
3 function table table 1: input select function clk_sel function 0 clk0, nclk0 1 clk1 table 2: enable function nen outputs q0:q4 nq0:nq4 1 disabled; low disabled; high 0 enabled enabled www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
4 dc electrical specifications - differential inputs symbol parameter min. ty p. max. units i ih input high current: clk0, clk1 input = v dd 150 ua input high current: nclk0 input = v dd 5 ua i il input low current: clk0, clk1 input = gnd -5 ua input low current: nclk0 input = gnd -150 ua c in input capacitance 4 pf v ih input high voltage v dd +0.3 v v il input low voltage -0.3 v v id input diferential amplitude pk-pk 0.15 1.3 v v cm common model input voltage v ee +0.5 v dd -0.85 v power supply characteristics and operating conditions symbol parameter test condition min. ty p. max. units v dd core supply voltage 3.0 3.3 3.6 v 2.375 2.5 2.625 v ee negative supply voltage -0.5 i dd power supply current all outputs unloaded 150 ma t a ambient operating temperature -40 85 c maximum ratings (above which the useful life may be impaired. for user guidelines, not tested) storage temperature ................................................... - 55 to +150oc s upply voltage v dd (referenced to v ee ) ................. - 0.5 to +4.6v inputs (referenced to v ee ) ................................. - 0.5 to v dd +0.5v c lock output (referenced to v ee ) .................... - 0.5 to v dd +0.5v note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. fis is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specifcation is not implied. exposure to absolute maximum rating conditions for extended periods may afect reliability. www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
5 dc electrical specifications- lvpecl outputs parameter description conditions min. ty p. max. units v oh output high voltage v dd =3.3v 2.1 2.6 v v dd =2.5v 1.3 1.6 v ol output low voltage v dd =3.3v 1.25 1.8 v v dd =2.5v 0.5 0.8 v swing peak to peak output voltage swing 0.6 1.1 v ` dc electrical specifications - lvcmos inputs symbol parameter conditions min. ty p. max. units i ih input high current input = v dd 150 ua i il input low current input = gnd -150 ua v ih input high voltage v dd =3.3v 2.0 v dd +0.3 v v il input low voltage v dd =3.3v -0.3 0.8 v v ih input high voltage v dd =2.5v 1.7 v dd +0.3 v v il input low voltage v dd =2.5v -0.3 0.7 v www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
6 ac electrical specifications parameter description conditions min. ty p. max. units f out clock output frequency clk0/ nclk0 input, lvpecl 1500 mhz clk1 input 300 t r output rise time from 20% to 80% 150 ps t f output fall time from 80% to 20% 150 ps t odc output duty cycle frequency<650mhz, lvpecl input 48 52 % v pp output swing single-ended lvpecl outputs 400 mv t j bufer additive jitter rms 0.03 ps t sk output skew 80 ps t pd propagation delay 1500 2100 ps t p2p skew part to part skew 1 150 ps 1. defned as skew between outputs on diferent devices operating at the same supply voltages and with equal load conditions. configuration test load board termination for lvpecl v 100 150 z = 50 l = 0 ~ 10in 150 device o z = 50 o dd tla tla www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
7 ordering information (1-3) ordering code package code package description pi6c4911505-04lie l 20-pin, tssop, pb-free and green PI6C4911505-04LIEX l 20-pin, tssop, pb-free and green, tape & reel notes: 1. 1fermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. e = pb-free and green 3. adding an x sufx = tape/reel date: 05/03/12 description: 20-pin, 173mil wide tssop package code: l document control #: pd-1311 revision: f notes: 1. refer jedec mo-153f/ac 2. controlling dimensions in millimeters 3. package outline exclusive of mold flash and metal burr 12-0373 packaging mechanical: 20-pin tssop (l) www.pericom.com pi6c491 1505-04 rev b 3/14/16 pi6c4911505-04 high performance 1:5 lvpecl fanout bufer 16-0045
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