1 idtqs316209 high-speed cmos 18-bit bus exchange switch industrial temperature range november 1999 1999 integrated device technology, inc. dsc-5564/- c idtqs316209 industrial temperature range quickswitch ? products high-speed cmos 18-bit bus exchange switch description: the qs316209 provides a set of 18 high-speed cmos ttl-compatible bus-exchange switches. the low on resistance of the qs316209 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. this device operates as an 18-bit bus switch or a 9-bit bus exchanger, which provides data exchanging between the four signals through the data-select (s0-s2) terminals. the qs316209 is characterized for operation at -40c to +85c. 1a1 1a2 1b2 1b1 s0 s1 s2 flow control one of nine channels functional block diagram features: - enhanced n channel fet with no inherent diode to vcc - 5 w bidirectional switches connect inputs to outputs - zero propagation delay, zero ground bounce - ttl-compatible input and output levels - undershoot clamp diodes on all switch and control pins - available in 48-pin ssop and tssop packages applications - resource sharing - crossbar switching - hot-swapping, hot-docking - bus isolation - voltage translation (5v to 3.3v)
2 industrial temperature range idtqs316209 high-speed cmos 18-bit bus exchange switch pin configuration 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 s0 1a1 1a2 gnd 2a1 2a2 v cc 3a1 3a2 gnd 4a1 4a2 5a1 5a2 gnd 6a1 6a2 7a1 7a2 gnd 8a1 8a2 9a1 9a2 s1 s2 1b1 1b2 2b1 2b2 gnd 3b1 3b2 gnd 4b1 4b2 5b1 5b2 gnd 6b1 6b2 7b1 7b2 gnd 8b1 8b2 9b1 9b2 so48-1 so48-2 ssop/ tssop top view absolute maximum ratings (1) symbol description max. unit v term (2) supply voltage to ground C 0.5 to +7 v v term (3) dc switch voltage v s C 0.5 to +7 v v term (3) dc input voltage v in C 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 (t a = 85 c) 0.85 w t stg storage temperature C 65 to +150 c 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 reliab ility. 2. vcc terminals. 3. all terminals except vcc. capacitance (t a = +25 o c, f = 1.0mhz, v in = 0v, v out = 0v) pins typ. max. (1) unit control inputs 4 5 pf quickswitch channels (switch off) 7.5 9 pf note: 1. this parameter is guaranteed but not production tested. pin description pin names i/o description 1 an - 9 an i/o bus a 1 bn - 9 bn i/o bus b s 0 - s 2 i data select function table (1) s 2 s 1 s 0 xa 1 xa 2 function lllzzdisconnect llhxb 1 zxa 1 to xb 1 lhlxb 2 zxa 1 to xb 2 lhhzxb 1 xa 2 to xb 1 hllzxb 2 xa 2 to xb 2 h l h z z disconnect hhlxb 1 xb 2 xa 1 to xb 1, xa 2 to xb 2 hhhxb 2 xb 1 xa 1 to xb 2, xa 2 to xb 1 note: 1. h = high voltage level l = low volta g e level z = hi g h-impedence
3 idtqs316209 high-speed cmos 18-bit bus exchange switch industrial temperature range r on (ohms) v in (volts) typical on resistance vs v in at v cc = 5v 16 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 dc electrical characteristics over operating range following conditions apply unless otherwise specified: industrial: t a = -40c to +85c, v cc = 5.0v 10% symbol parameter test conditions min. typ. (1) max. unit 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 i in input leakage current (control inputs) 0v v in vcc, control inputs 0.01 1 m a i oz off-state current (hi-z) 0v v out vcc, switches off 0.01 1 m a r on switch on resistance (2) vcc = min., v in = 0v , i on = 30ma 5 7 w r on switch on resistance (2) vcc = min., v in = 2.4v , i on = 15ma 10 14 w v p pass voltage (3) vcc = 5v, i out = -5 m a 3.7 4 4.2 v notes: 1. typical values are at v cc = 5.0v, t a = 25c. 2. max value of r on is guaranteed but not production tested. 3. pass voltage is guaranteed but not production tested.
4 industrial temperature range idtqs316209 high-speed cmos 18-bit bus exchange switch power supply characteristics symbol parameter test conditions (1) max. unit i ccq quiescent power supply current v cc = max., v in = gnd or vcc, f = 0 3 m a d i cc power supply current per control input high (2) v cc = max., v in = 3.4v, f = 0 1.5 ma i ccd dynamic power supply current per mhz (3) v cc = max., a and b pins open control input toggling at 50% duty cycle 0.25 ma/mhz notes: 1. for conditions shown as min. or max., use the appropriate values specified under dc electrical characteristics. 2. per tll driven input (v in = 3.4v, control inputs only). a and b pins do not contribute to d icc . 3. this current applies to the control inputs only and represents the current required to switch internal capacitance at the sp ecified frequency. the a and b inputs generate no significant ac or dc currents as they transition. this parameter is guaranteed but not production tes ted. switching characteristics over operating range t a = -40c to +85c, v cc = 5.0v 10% c load = 50pf, r load = 500 w unless otherwise noted. symbol parameter min. (1) typ. max. unit t plh t phl data propagation delay (2,4) xan to xbn, xbn to xan 0.25 (3) ns t pzl t pzh switch turn-on delay sn to xan, xbn 1.5 6.5 ns t plz t phz switch turn-off delay (2) sn to xan, xbn 1.5 6.2 ns notes: 1. minimums are guaranteed but not production tested. 2. this parameter is guaranteed but not production tested. 3. the time constant for the switch alone is of the order of 0.25ns for c l = 50pf. 4. the bus switch contributes no propagation delay other than the rc delay of the on resistance of the switch and the load cap acitance. since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. pr opagation delay of the bus switch, when used in a system, is determi ned by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
5 idtqs316209 high-speed cmos 18-bit bus exchange switch industrial temperature range ordering information idtqs xxxxx xx package device type blank industrial (-40c to +85c) shrink small outline package (so48-1) thin shrink small outline (so48-2) pv pa 316209 high speed cmos 18-bit bus-exchange switch x process corporate headquarters for sales: 2975 stender way 800-345-7015 or 408-727-6116 santa clara, ca 95054 fax: 408-492-8674 www.idt.com* *to search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. the idt logo, quickswitch, and synchroswitch are registered trademarks of integrated device technology, inc.
|
