1 idtqs4a210 high-performance cmos two-channel sp4t mux/demux industrial temperature range august 2000 2000 integrated device technology, inc. dsc-5550/2 c industrial temperature range features: ? low on resistance: r ds ( on ) = 5 ? fast transition time: t tran = 6ns ? wide bandwidth: 700mhz (-3db point) ? crosstalk: -110db at 50khz, -68db at 5mhz, -66db at 30mhz ? off-isolation: -90db at 50khz, -60db at 5mhz, -50db at 30mhz ? single 5v supply ? can be used as multiplexer or demultiplexer ? ttl-compatible control inputs ? ultra-low quiescent current: 3 a ? available in qsop package the idt logo is a registered trademark of integrated device technology, inc. applications: ? high-speed video signal switching/routing ? hdtv-quality video signal multiplexing ? audio signal switching/routing ? data acquisition ? ate systems ? telecomm routing ? switch between multiple video sources ? token ring transceivers ? high-speed networking functional block diagram idtqs4a210 description: the qs4a210 is a high-performance cmos two-channel sp4t multi- plexer/demultiplexer with individual enables. the low on-resistance of the qs4a210 allows inputs to be connected to outputs with low insertion loss and high bandwidth. ttl-compatible control circuitry with ?break-before-make? feature prevents contention. the qs4a210 with 700mhz bandwidth makes it ideal for high-perfor- mance video signal switching, audio signal switching, and telecom routing applications. low power dissipation makes this device ideal for battery operated and remote instrumentation applications. the qs4a210 is offered in the qsop package which has several advantages over conventional packages such as pdip and soic, includ- ing: ? reduced signal delays due to denser component packaging on circuit boards ? reduced system noise due to less pin inductance, resulting in lower ground bounce the qs4a210 is characterized for operation at -40c to +85c. quickswitch ? products high-performance cmos two channel sp4t mux/demux control logic yb i3b i2b i1b i0b s0 i3a i2a i1a i0a ya s1 ea eb
2 industrial temperature range idtqs4a210 high-performance cmos two-channel sp4t mux/demux pin configuration qsop top view symbol description max unit v term (2) supply voltage to ground ?0.5 to +7 v v term (3) dc switch voltage v s ?0.5 to +7 v ? analog input voltage ?0.5 to +7 v v term (3) dc input voltage v in ?0.5 to +7 v v ac ac input voltage (pulse width 20ns) ?3 v i out dc output current 120 ma p max maximum power dissipation 0.7 w t stg storage temperature ?65 to +150 c absolute maximum ratings (1) pin names i/o description ixa i/o demux port a ixb i/o demux port b ea , eb i enable inputs s 0 , s 1 i select inputs ya, yb i/o mux port a, b pin description notes: 1. stresses greater than those listed under absolute maximum ratings 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 specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. v cc terminals. 3. all terminals except v cc . note: 1. h = high voltage level l = low voltage level x = don't care z = high-impedance enable select mux/demux ports ea eb s 1 s 0 ya yb function h x x x z x disable a x h x x x z disable b llll1 0 a1 0 bs 1 - 0 = 0 lllh1 1 a1 1 bs 1 - 0 = 1 llhl1 2 a1 2 bs 1 - 0 = 2 llhh1 3 a1 3 bs 1 - 0 = 3 function table (1) 16 15 14 13 12 11 10 9 ea s1 i3a i2a i1a i0a ya gnd v cc eb s0 i3b i2b i1b i0b yb 1 2 3 4 5 6 7 8
3 idtqs4a210 high-performance cmos two-channel sp4t mux/demux industrial temperature range dc electrical characteristics over operating range following conditions apply unless otherwise specified: industrial: t a = ?40c to +85c, v cc = 5v 5% symbol parameter test conditions min. typ. (1) max. unit analog switch v in analog signal range (2) ?0.5 1 vcc - 1 v r ds ( on ) drain-source on resistance (2,3) vcc = min., v in = 0v , i on = 30ma ? 5 7 vcc = min., v in = 2.4v , i on = 15ma ? 13 17 i c(off) channel off leakage current i n = vcc or 0v; y n = 0v or vcc; ea = eb = vcc ? 2 ? na i c(on) channel on leakage current i n = y n = 0v ? 2 ? na (each channel is turned on sequentially) digital control v ih input high voltage guaranteed logic high for control pins 2 ? ? v v il input low voltage guaranteed logic low for control pins ? ? 0.8 v dynamic characteristics t trans switching time of mux r l = 1k , c l = 100pf 0.5 ? 6.6 ns sx to y (see transition time) t on( en ) enable turn-on time r l = 1k , c l = 100pf 0.5 ? 6 ns ea = eb to y (see switching time) t off( en ) enable turn-off time r l = 1k , c l = 100pf 0.5 ? 6 ns ea = eb to y (see switching time) t pd group delay (2,4) r l = 1k , c l = 100pf ? ? 250 ps f 3db -3db bandwidth v in = 1vp-p, r l = 75 ? 700 ? m h z off-isolation v in = 1vp-p, r l = 75 , f = 5.5mhz ? -60 ? db x talk crosstalk v in = 1vp-p, r l = 75 , f = 5.5mhz ? -68 ? db c mux(off) mux off capacitance ea = eb = vcc, v in = v out = 0v ? 5.6 ? pf c demux(off) demux off capacitance ea = eb = vcc, v in = v out = 0v ? 7.4 ? pf c mux(on) mux on capacitance ea = eb = 0v, v in = v out = 0v ? 12 ? pf c demux(on) demux on capacitance ea = eb = 0v, v in = v out = 0v ? 15 ? pf q ci charge injection ? 1.5 ? pc notes: 1. typical values are at v cc = 5.0v, t a = 25c. 2. max value is guaranteed but not production tested. 3. measured by voltage drop between a and c pins or b and d pins at indicated current through the switch. on resistance is dete rmined by the lower of the voltages on the two (i, y) pins. 4. the bus switch contributes no group delay other than the rc delay of the on resistance of the switch and load capacitance. g roup delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the dr iven side. power supply characteristics symbol parameter test conditions max. unit i ccq quiescent power v cc = max., v in = gnd or v cc , f = 0 3 a
4 industrial temperature range idtqs4a210 high-performance cmos two-channel sp4t mux/demux typical characteristics notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | note: 1. insertion loss = 20 log |v o /v s | off-isolation and crosstalk vs. frequency off-isolation and crosstalk vs. frequency off-isolation and crosstalk vs. frequency insertion loss vs. frequency 1k 10k 100k frequency (hz) ( d b ) 1m 10m 100m 1g crosstalk off-isolation 150 120 90 60 30 0 v cc = 5v r l = 75 100m 200m 300m frequency (hz) ( d b ) 400m 500m 600m 700m crosstalk off-isolation 60 50 40 30 20 10 0 v cc = 5v r l = 75 160 140 120 100 80 60 40 v cc = 5v r l = 75 10k 20k 30k frequency (hz) ( d b ) 40k 50k 60k 70k crosstalk off-isolation 4 2 0 2 4 6 r l = 1k r l = 75 v cc = 5v 1k 10k 100k frequency (hz) ( d b ) 1m 10m 100m 1g
5 idtqs4a210 high-performance cmos two-channel sp4t mux/demux industrial temperature range typical characteristics (continued) insertion loss vs. frequency on-resistance vs. v in note: 1. insertion loss = 20 log |v o /v s | 16 14 12 10 8 0.0 0.5 1.0 1.5 2.0 2.5 3.0 6 4 v in (volts) r d s ( o n ) - d r a i n s o u r c e o n - r e s i s t a n c e ( ) v cc = 4.75v 18 r on link transition time test circuits 1 2 4 6 2 1 0 100m 200m 300m frequency (hz) ( d b ) 400m 500m 600m 700m r l = 75 v cc = 5v r l = 1k t trans t trans 3.0v 1.5v 0v 1.5v select input i0a-i2a i3a i0b-i3b yb ya 5v 5v v out v in 5v 50 500 50pf 0v gnd qs4a210 ea s0 s1 eb switch output v cc
6 industrial temperature range idtqs4a210 high-performance cmos two-channel sp4t mux/demux insertion loss note: 1. insertion loss = 20 log |v o /v s | crosstalk note: 1. crosstalk = 20 log |v o /v s | off-isolation note: 1. off-isolation = 20 log |v o /v s | enable switching time test circuits (continued) i1a-i3a i0a i0b-i3b yb ya 5v 5v v in 5v 50 500 50pf gnd qs4a210 s0 s1 eb ea 3.0v 1.5v 0v 0.3v 0.3v control input output output v out v cc t off(en) t off(en) +5v gnd qs4a210 eb v in i0a ixa ixb s0 s1 ea r s = 50 v cc y 0 y a r l 75 +5v +5v gnd qs4a210 eb ixa ixb s0 s1 ea r s = 50 v cc y a y 0 r l 75 +5v gnd qs4a210 ea v s i0a s0 s1 eb r s = 50 v cc r l 75 y a y 0
7 idtqs4a210 high-performance cmos two-channel sp4t mux/demux industrial temperature range ordering information idtqs xxxxx xx package device type quarter size outline package qsop - green q qg 4a210 high performance cmos two channel sp4t mux/demux corporate headquarters for sales: for tech support: 6024 silver creek valley road 800-345-7015 or 408-284-8200 logichelp@idt.com san jose, ca 95138 fax: 408-284-2775 www.idt.com
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