1 industrial temperature range idt74cbtlv16214 low-voltage 12-bit 3:1 mux / demux bus switch august 2002 2002 integrated device technology, inc. dsc-5890/5 c industrial temperature range applications: ? muxing and demuxing ? 3.3v high speed bus switching and bus isolation ? hot-swapping, hot-docking features: ?5 a/b bi-directional switch ? isolation under power-off conditions ? over-voltage tolerant ? latch-up performance exceeds 100ma ?v cc = 2.3v - 3.6v, normal range ? esd >2000v per mil-std-883, method 3015; >200v using machine model (c = 200pf, r = 0) ? available in ssop, tssop, and tvsop packages the idt logo is a registered trademark of integrated device technology, inc. 12 b 3 28 1 b 1 1 b 3 12 b 1 54 3 30 12 b 2 29 1 b 2 53 sw sw s 0 s 1 s 2 1 56 55 1 a 12 a 2 27 sw sw sw sw idt74cbtlv16214 functional block diagram low-voltage 12-bit 3:1 mux / demux bus switch description: the cbtlv16214 provides a set of 12 high-speed buses switching between three separate ports. the low on resistance allows inputs to be connected to outputs without adding propagation delay. the cbtlv16214 operates as a 12-bit bus select through the data select (s 0 -s 2 ) terminals. flow control circuitry ab simplified schematic, each switch
2 industrial temperature range idt74cbtlv16214 low-voltage 12-bit 3:1 mux / demux bus switch absolute maximum ratings (1) symbol description max. unit v cc supply voltage range ?0.5 to 4.6 v v i input voltage range ?0.5 to 4.6 v continuous channel current 128 ma i ik input clamp current, v i/o < 0 ?50 ma t stg storage temperature range ?65 to +150 c note: 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. pin configuration ssop/ tssop/ tvsop top view s 0 1 a 2 a 2 b 3 3 b 3 1 b 3 3 a gnd v cc gnd s 2 1 b 1 1 b 2 gnd gnd 47 37 38 39 40 41 42 43 44 45 46 33 34 35 36 56 55 49 50 51 52 53 54 48 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 11 21 22 23 24 29 30 31 32 25 26 27 28 s 1 4 a 5 a 5 b 3 6 b 3 4 b 3 6 a 8 a 9 a 8 b 3 7 b 3 7 a 9 b 3 10 a 10 b 3 11 a 11 b 3 12 a 12 b 3 2 b 1 2 b 2 3 b 1 3 b 2 4 b 1 4 b 2 5 b 1 5 b 2 6 b 1 6 b 2 7 b 1 7 b 2 8 b 1 8 b 2 9 b 1 9 b 2 10 b 1 10 b 2 11 b 1 11 b 2 12 b 1 12 b 2 note: 1. h = high voltage level l = low voltage level z = high-impedance operating characteristics (1) symbol parameter test conditions min. max. unit v cc supply voltage 2.3 3.6 v v ih high-level control input voltage v cc = 2.3v to 2.7v 1.7 ? v v cc = 2.7v to 3.6v 2 ? v il low-level control input voltage v cc = 2.3v to 2.7v ? 0.7 v v cc = 2.7v to 3.6v ? 0.8 t a operating free-air temperature ?40 +85 c note: 1. all unused control inputs of the device must be held at v cc or gnd to ensure proper device operation. pin names description s x data select inputs x a port a inputs or outputs x b x port b inputs or outputs pin description inputs inputs/outputs s 2 s 1 s 0 a operation l l l z disconnect ll h b 1 a port = b 1 port lh l b 2 a port = b 2 port l h h z disconnect h l l z disconnect hl h b 3 a port = b 3 port hh l b 1 a port = b 1 port hh h b 2 a port = b 2 port function table (1)
3 industrial temperature range idt74cbtlv16214 low-voltage 12-bit 3:1 mux / demux bus switch dc electrical characteristics over operating range following conditions apply unless otherwise specified: operating condition: t a = ?40c to +85c notes: 1. typical values are at 3.3v, +25 c ambient. 2. the increase in supply current is attributable to each input that is at the specified voltage level rather than v cc or gnd. 3. this is measured by the voltage drop between the a and b terminals at the indicated current through the switch. symbol parameter test conditions min. typ. (1) max. unit v ik control inputs, data i/o v cc = 3v, i i = ?18ma ? ? ?1.2 v i i control inputs v cc = 3.6v, v i = v cc or gnd ? ? 1 a i oz data i/o v cc = 3.6v, v o = 0v or 3.6v switch disabled ? ? 5 a i off v cc = 0v, v i or v o = 0v or 3.6v ? ? 10 a i cc v cc = 3.6v, i o = 0, v i = v cc or gnd ? ? 10 a i cc (2) control inputs v cc = 3.6v, one input at 3v, other inputs at v cc or gnd ? ? 300 a c i control inputs v i = 3v or 0 ? 4 ? pf c io(off) av o = 3v or 0 (switch off) ? 20 ? pf b ? 7.5 ? max. at v cc = 2.3v v i = 0 i o = 64ma ? 5 8 typ. at v cc = 2.5v i o = 24ma ? 5 8 r on (3) v i = 1.7v i o = 15ma ? 27 40 v i = 0 i o = 64ma ? 5 7 v cc = 3v i o = 24ma ? 5 7 v i = 2.4v i o = 15ma ? 10 15 v cc = 2.5v 0.2v v cc = 3.3v 0.3v symbol parameter min. max. min. max. unit t pd (1) propagation delay ? 0.15 ? 0.25 ns a to b or b to a t pd propagation delay 1 6.5 1 6 ns s to a or b t en output enable time 1 6.5 1 6 ns s to a or b t dis output disable time 1 7 1 6.5 ns s to a or b note: 1. the propagation delay is the calculated rc time constant of the typical on-state resistance of the switch and the specified l oad capacitance when driven by an ideal voltage source (zero output impededance). switching characteristics
4 industrial temperature range idt74cbtlv16214 low-voltage 12-bit 3:1 mux / demux bus switch open v load gnd v cc pulse generator d.u.t. 500 500 c l r t v in v out (1, 2) same phase input transition opposite phase input transition 0v 0v v oh v ol t plh t phl t phl t plh output v ih v t v t v ih v t control input t plz 0v output normally low t pzh 0v switch closed output normally high enable disable switch open t phz 0v v ol + v lz v oh v t v t t pzl v load/2 v load/2 v ih v t v ol v oh - v hz test circuits and waveforms propagation delay test circuits for all outputs enable and disable times note: 1. diagram shown for input control enable-low and input control disable-high. definitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance: should be equal to z out of the pulse generator. notes: 1. pulse generator for all pulses: rate 10mhz; t f 2.5ns; t r 2.5ns. 2. pulse generator for all pulses: rate 10mhz; t f 2ns; t r 2ns. test switch t plz /t pzl v load t phz /t pzh gnd t pd open switch position symbol v cc (1) = 3.3v0.3v v cc (2) = 2.5v0.2v unit v load 6 2 x vcc v v ih 3 vcc v v t 1.5 vcc / 2 v v lz 300 150 mv v hz 300 150 mv c l 50 30 pf test conditions
5 industrial temperature range idt74cbtlv16214 low-voltage 12-bit 3:1 mux / demux bus switch ordering information idt xx cbtlv xxx xx package device type temp. range pv pa pf 74 shrink small outline package thin shrink small outline package thin very small outline package low-voltage 12-bit 3:1 mux / demux bus switch ?40c to +85c 16214 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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