1 ps8798 12/05/05 block diagram pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out features ? 4-differential channel 2:1 mux/demux ? tmds signaling ? data rate: 1.65gbps ? crosstalk: -36db@1.65gbps ? switching speed: 4ns ? isolation: -35db@1.65gbps ? esd: data bits @ 8kv hbm, select bit @ 2kv hbm ? near-zero prop delay: 250ps max. ? low bit-to-bit skew ? hot insertion capable ? enable/disable time: 9ns ? bidirectional ? packaging (pb-free & green): - 42-pin tqfn (zh) - 48-pin bqsop (b) description pericom semiconductors pi3hdmi series of switch circuits are targeted for high-resolution video networks that are based on dvi/hdmi standards, and tmds signal processing. the pi3hdmi412ft is an 8- to 4-channel mux/demux switch. the device multiplexes differential signals to one of two corresponding outputs. the switch is bidirectional and offers little or no attenua - tion of the high-speed signals at the outputs. it is designed for low bit-to-bit skew and high channel-to-channel noise isolation. the maximum dvi/hdmi data rate of 1.65gbps provides the resolution required by the next generation hdtv and pc graphics. three differential channels are used for data (video signals for dvi or audio/video signals for hdmi), and one differential channel is used for clock for decoding the tmds signals at the outputs. because of its passive bidirectional feature, this switch can be used either at the video drivers side or at the receiver side. for pc graphics applications, the device sits at the drivers side to switch between multiple display units such as pc lcd monitor, projector, tv, etc. for consumer video applications, the device sits at the receiver end to switch between the source components such as dvd, d-vhs, stb, etc. pin description ? ? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ? ?? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ? ?? ? ?? ?? ? ?? ? ? ?? ?? ? ?? ? ? ?? ??? ? ?? ?? ? ?? ? ? ?? ?? ? ?? ? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ? ?? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ? ? ? ? ?? ? ? ? ? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? ? ? ?? v ss v dd v ss v dd v ss d0+ d0- v ss d1+ d1- v ss v dd sel v ss d2+ d2- v ss d3+ d3- v ss v dd v ss v dd v ss v dd v ss d0 +a d0 - a d1 +a d1 - a v ss d2 +a d2 - a d3 +a d3 -a v ss v dd d0 +b d0 - b d1 +b d1 - b v ss d2 +b d2 - b d3 +b d3 -b v ss v dd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 42-pin tqfn 48-pin bqsop
2 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out truth table function sel n to n a l n to n b h storage temperature...........................................................C65c to +150c supply voltage to v ss potential............................................C0.5v to +2.5v dc input voltage ........................................................................ v ss to v dd dc output current.............................................................................120ma note: stresses greater than those listed under maximum rat - ings may cause permanent damage to the device. this 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 im - plied. exposure to absolute maximum rating conditions for extended periods may affect reliability. maximum ratings (above which useful life may be impaired. for user guidelines, not tested.) dc electrical characteristics for switching over operating range (t a = C40c to +85c) paramenter description test conditions (1) min. typ .(2) max. units v ih 3 input high voltage guaranteed high level 0.65( v dd -v ss )+v ss v v il 3 input low voltage guaranteed low level C0.5+v ss 0.35( v dd -v ss )+v ss v ik clamp diode voltage v dd =max., i in =C18ma C0.7+v ss C1.2+v ss i ih input high current v dd =max., v in =v dd 5 a i il input low current v dd =max., v in = v ss 5 notes: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. typical values are at t a = 25c ambient and maximum loading. 3. v ih & v il are for sel input only. pin description pin # (bqsop) pin # (tqfn) pin name description 2, 4, 12, 21, 23, 25, 36, 48 2, 8, 16, 18, 20, 30, 40, 42 v dd + power supply 3.30 1, 3, 5, 8, 11, 14, 17, 20, 22, 24, 26, 31, 37, 42, 47 1, 5, 10, 13, 17, 19, 21, 39, 41 v ss - power supply 13 9 sel select pin, see truth table 6, 7, 9, 10, 15, 16, 18, 19, 27-30, 32-35, 38-41, 43-46 3, 4, 6, 7, 11, 12, 14, 15, 22-29, 31-38, dx +/-x + clk +/-x data + clk bits for tmds signal dc power supply characteristics paramenter description min. max. units v dd positive power supply 3.0 3.6 v v ss negative power supply 1.5 1.6 v
3 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out power supply characteristics parameters description test conditions (1) min. typ. (2) max. units i cc quiescent power supply current v dd = max., v in = v dd or v ss 200 a notes: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. typical values are at t a = 25c ambient and maximum loading. dynamic electrical characteristics over the operating range (t a = -40o to +85oc) parameter description test conditions min. typ. max. units x talk crosstalk see fig. 1 for measurement setup, @ 1.65 gbps -36 db o irr off isolation see fig. 2 for measurement setup, @ 1.65 gbps -35 fig 1. crosstalk setup ???????????? ? ? ? ??? ????? ?????? ?????? ?????? ??????? ??? ????? ??? ????
4 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out fig 2. off-isolation setup fig 3. crosstalk ???????????? ? ? ? ??? ????? ?????? ?????? ?????? ??????? ??? ????
5 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out notes: 1. for measurement setup, please see test circuit for electrical characteristic on page 6, and switching waveforms on page 7 switching characteristics (t a = -40o to +85oc, v ss =0v, v dd =1.8v 10%) paramenter description min. max. units t pzh , t pzl line enable time - sel to a n , b n (1) 0.5 8.0 t phz , t plz line disable time - sel to a n , b n (1) 0.5 4.0 fig 4. off isolation
6 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out ? ? ??? ? ? ? ?? ? ?? ? ??? ??????? ??????? ???? ? ?? ?????? ????????? ????? test circuit for electrical characteristics notes: 1. c l = load capacitance: includes jig and probe capacitance. 2. r t = termination resistance: should be equal to z out of the pulse generator 3. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. 4. all input impulses are supplied by generators having the following characteristics: prr mhz, z o = 50?, t r 2.5ns, t f 2.5ns. 5. the outputs are measured one at a time with one transition per measurement. test circuit for dynamic electrical characteristics switch positions test switch t plz , t pzl (output on b-side) 2 x (v dd - v ss ) t phz , t pzh (output on b-side) v ss prop delay open ???????????? ?? ?? ?? ??? ????? ?????????????????????
7 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out switching waveforms voltage waveforms enable and disable times ? ??? ? ?? ?? ? ?? ?? ? ?? ? ?? ? ?? ? ? ??? ? ????? ? ????? ? ??? ? ??? ? ??? ?????? ?????? ? ?? ? ?? ??? ? ?? ? ??????? ? ??? ??????? 1.8k-ohm 1.5k-ohm 3.3v pi3hdmi412ft select line select line 1.5v 3.3v example of a circuit that also needs to be connected to the select lines of our device:
8 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out packaging mechanical: 42-pin tqfn (zh) 3.500.10 9.00.10 0.5 0.25.05 0.20 ref . 0.6.03 0.800.04 2.05.05 7.55.05 pin #1 corner pin #1 corner 0.40.05 packaging mechanical: 48-pin bqsop (b) .014 .0157 bsc 0.40 0.356 .008 0.20 .002 .009 5 ? 0.05 0.25 .079 2.0 .010 0.25 gauge plane .150 .157 x.xx x.xx denotes dimensions in millimeters 3.80 4.00 .228 .244 5.80 6.20 .020 .029 0.50 0.75 .063 1.60 .015 0.381 .386 .394 9.80 10.00 .0051 .009 0.13 0.23 1 48 x 45 ? bsc nom max nom ref
9 ps8798 12/05/05 pi3hdmi412ft 4-differential channel, 2:1 mux/demux, dvi/hdmi compliant signal switch with flow-through pin out ordering information ordering code package code package description PI3HDMI412FTZHE zh pb-free & green, 42-pin tqfn pi3hdmi412ftbe b pb-free & green, 48-pin bqsop notes: 1. thermal characteristics can be found on the company web site at www .pericom.com/packaging/ pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com
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