industrial temperature range idt74cbtlv3383 low-voltage 10-bit bus-exchange switch 1 august 2002 industrial temperature range the idt logo is a registered trademark of integrated device technology, inc. ? 2002 integrated device technology, inc. dsc-5738/5 idt74cbtlv3383 functional block diagram low-voltage 10-bit bus-exchange switch features: ?5 ? ? ? ? ? a/b bi-directional bus 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, qsop and tssop packages description: the cbtlv3383 provides ten bits of high-speed bus switching or exchang- ing with low on-switch resistance of the switch allowing connections to be made with minimal propagation delay. the device operates as a 10-bit bus switch or a 5-bit bus exchanger, which provides swapping of the a and b pairs of signals. the bus-exchange function is selected when bx is high and be is low. applications: ? 3.3v high speed bus switching and bus isolation ? crossbar switching 3 4 1a1 1a2 2 5 1b1 1b2 sw sw 22 5a1 5a2 20 23 5b1 5b2 1 13 bx 21 be sw sw sw sw sw sw ab control circuitry simplified schematic, each switch
industrial temperature range 2 idt74cbtlv3383 low-voltage 10-bit bus-exchange switch 3 a 2 3 a 1 bx gnd v cc be 5 a 2 1 a 1 5 a 1 1 a 2 5 b 1 1 b 2 4 b 2 2 b 1 4 a 2 2 a 1 4 a 1 2 a 2 4 b 1 2 b 2 3 b 2 3 b 1 1 b 15 b 2 11 14 12 13 124 322 421 520 619 718 817 916 10 15 223 pin configuration ssop/ qsop/ tssop top view symbol description max unit v cc supplyvoltage 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 ?65 to +150 c absolute maximum ratings (1) 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. note: 1. h = high voltage level x = don?t care l = low voltage level z = high impedance input inputs/outputs be bx 1 a 1 - 5 a 11 a 2 - 5 a 2 ll 1 b 1 - 5 b 11 b 2 - 5 b 2 lh 1 b 2 - 5 b 21 b 1 - 5 b 1 hx z z function table (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 operating characteristics, t a = 25c (1) note: 1. all unused control inputs of the device must be held at v cc or gnd to ensure proper device operation.
industrial temperature range idt74cbtlv3383 low-voltage 10-bit bus-exchange switch 3 symbol parameter test conditions min. typ. (1) max. unit v ik control inputs, data inputs v cc = 3v, i i = ?18ma ? ? ?1.2 v i i control inputs v cc = 3.6v, v i = v cc or gnd ? ? 1a i oz data i/o v cc = 3.6v, v o = 0 or 3.6v, switch disabled ? ? 5 a i off v cc = 0, v i or v o = 0 to 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 ? 3.5 ? pf c io(off) v o = 3v or 0, be = v cc ? 13.5 ? pf 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 dc electrical characteristics over operating range following conditions apply unless otherwise specified: operating conditions: t a = ?40c to +85c notes: 1. typical values are at v cc = 3.3v, +25c ambient. 2. the increase in supply current is attributable to each current 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. on-state res istance is determined by the lower of the voltages of the two (a or b ) terminals. v cc = 2.5v 0.2v v cc = 3.3v 0.3v symbol parameter min. typ. max. min. typ. max. unit t pd (1) propagation delay ?? 0.15 ?? 0.25 ns a to b or b to a t pd propagation delay 1.5 ? 5.8 1.5 ? 4.7 ns bx to a or b t en output enable time 1.5 ? 5.3 1.5 ? 4.7 ns be to a or b t dis output disable time 1 ? 61 ? 6ns be 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 driven by an ideal voltage source (zero output impedance). switching characteristics
industrial temperature range 4 idt74cbtlv3383 low-voltage 10-bit bus-exchange 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 test circuits for all outputs enable and disable times propagation delay 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 2.5ns. definitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance: should be equal to z out of the pulse generator. 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 test switch t plz /t pzl v load t phz /t pzh gnd t pd open switch position
industrial temperature range idt74cbtlv3383 low-voltage 10-bit bus-exchange switch 5 ordering information idt xx cbtlv xxx xx package device type temp. range py q pg 74 shrink small outline package quarter-size small outline package thin shrink small outline package low-voltage 10-bit bus exchange switch ?40c to +85c 3383 corporate headquarters for sales: for tech support: 2975 stender way 800-345-7015 or 408-727-6116 logichelp@idt.com santa clara, ca 95054 fax: 408-492-8674 (408) 654-6459 www.idt.com
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