military and industrial temperature ranges idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator 1 june 2002 military and industrial temperature ranges the idt logo is a registered trademark of integrated device technology, inc. ? 2002 integrated device technology, inc. dsc-2572/9 features: ? std., a, b, and c grades ? low input and output leakage 1a (max.) ? cmos power levels ? true ttl input and output compatibility: ?v oh = 3.3v (typ.) ?v ol = 0.3v (typ.) ? high drive outputs (-15ma i oh , 48ma i ol ) ? meets or exceeds jedec standard 18 specifications ? military product compliant to mil-std-883, class b and desc listed (dual marked) ? power off disable outputs permit "live insertion" ? available in the following packages: ? industrial: soic, ssop, qsop ? military: cerdip, lcc functional block diagram idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator description: the idt54/74fct521t is an 8-bit identity comparator built using an advanced dual metal cmos technology. these devices compare two words of up to eight bits each and provide a low output when the two words match bit for bit. the expansion input i a = b also serves as an active low enable input. a 0 b 0 a 1 b 1 a 2 b 2 a 3 b 3 a 4 b 4 a 5 b 5 a 6 b 6 a 7 b 7 i a=b o a=b 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 1 19
military and industrial temperature ranges 2 idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator pin configuration symbol description max unit v term (2) terminal voltage with respect to gnd ?0.5 to +7 v v term (3) terminal voltage with respect to gnd ?0.5 to v cc +0.5 v t stg storage temperature ?65 to +150 c i out dc output current ?60 to +120 ma absolute maximum ratings (1) 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. no terminal voltage may exceed vcc by +0.5v unless otherwise noted. 2. inputs and vcc terminals only. 3. output and i/o terminals only. pin names description a 0 - a 7 word a inputs b 0 - b 7 word b inputs i a = b expansion or enable input (active low) o a = b identity output (active low) pin description symbol parameter (1) conditions typ. max. unit c in input capacitance v in = 0v 6 10 pf c out output capacitance v out = 0v 8 12 pf capacitance (t a = +25c, f = 1.0mhz) note: 1. this parameter is measured at characterization but not tested. function table (1) inputs output i a = b a, b o a = b l a = b* l la bh h a = b* h ha bh cerdip/ soic/ ssop/ qsop top view lcc top view 1 2 3 4 5 7 9 6 8 10 11 12 13 14 15 16 17 18 19 20 b 6 b 7 a 7 a 6 b 5 i a = b b 0 a 0 v c c b 3 g n d a 4 b 4 a 5 index a 1 b 1 a 3 a 2 b 2 o a = b 2 3 1 16 15 14 11 19 18 20 17 13 12 5 6 7 4 8 9 10 a 1 a 0 b 0 v cc b 1 a 3 a 2 b 2 b 3 gnd o a=b b 6 b 7 a 7 a 6 b 4 b 5 a 5 a 4 i a=b note: 1. h = high voltage level l = low voltage level * a 0 = b 0, a 1 = b 1, a 2 = b 2, etc.
military and industrial temperature ranges idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator 3 symbol parameter test conditions (1) min. typ. (2) max. unit v ih input high level guaranteed logic high level 2 ? ? v v il input low level guaranteed logic low level ? ? 0.8 v i ih input high current (4) v cc = max. v i = 2.7v ? ? 1a i il input low current (4) v cc = max. v i = 0.5v ? ? 1 i i input high current (4) v cc = max., v i = v cc (max.) ? ? 1a v ik clamp diode voltage v cc = min., i in = ?18ma ? ?0.7 ?1.2 v i os short circuit current v cc = max., v o = gnd (3) ?60 ?120 ?225 ma v oh output high voltage v cc = min i oh = ?6ma mil 2.4 3.3 ? v in = v ih or v il i oh = ?8ma ind v i oh = ?12ma mil 2 3 ? i oh = ?15ma ind v ol output low voltage v cc = min i ol = 32ma mil ? 0.3 0.5 v v in = v ih or v il i ol = 48ma ind v h input hysteresis ? ? 200 ? mv i cc quiescent power supply current v cc = max. ? 0.01 1 ma v in = gnd or v cc dc electrical characteristics over operating range following conditions apply unless otherwise specified: industrial: t a = ?40c to +85c, v cc = 5.0v 5%; military: t a = ?55c to +125c, v cc = 5.0v 10% notes: 1. for conditions shown as min. or max., use appropriate value specified under electrical characteristics for the applicable dev ice type. 2. typical values are at v cc = 5.0v, +25c ambient. 3. not more than one output should be tested at one time. duration of the test should not exceed one second. 4. the test limit for this parameter is 5a at t a = ?55c.
military and industrial temperature ranges 4 idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator symbol parameter test conditions (1) min. typ. (2) max. unit ? i cc quiescent power supply current v cc = max. ? 0.5 2 ma ttl inputs high v in = 3.4v (3) i ccd dynamic power supply v cc = max. v in = v cc ? 0.15 0.25 ma/ current (4) outputs open v in = gnd mhz one input toggling 50% duty cycle i c total power supply current (6) v cc = max. v in = v cc ? 1.5 3.5 ma outputs open v in = gnd fi = 10mhz v in = 3.4v ? 1.8 4.5 one bit toggling v in = gnd 50% duty cycle notes: 1. for conditions shown as min. or max., use appropriate value specified under electrical characteristics for the applicable dev ice type. 2. typical values are at v cc = 5.0v, +25c ambient. 3. per ttl driven input; (v in = 3.4v). all other inputs at v cc or gnd. 4. this parameter is not directly testable, but is derived for use in total power supply calculations. 5. values for these conditions are examples of ? i cc formula. these limits are guaranteed but not tested. 6. i c = i quiescent + i inputs + i dynamic i c = i cc + ? i cc d h n t + i ccd (f cp /2+ f i n i ) i cc = quiescent current ? i cc = power supply current for a ttl high input (v in = 3.4v) d h = duty cycle for ttl inputs high n t = number of ttl inputs at d h i ccd = dynamic current caused by an input transition pair (hlh or lhl) f cp = clock frequency for register devices (zero for non-register devices) f i = output frequency n i = number of outputs at f i all currents are in milliamps and all frequencies are in megahertz. power supply characteristics notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. fct521at fct521ct symbol parameter condition (1) min. (2) max. min. (2) max. unit t plh propagation delay c l = 50pf 1.5 7.2 1.5 4.5 ns t phl ax or bx to o a = b r l = 500 ? t plh propagation delay 1.5 6 1.5 4.1 ns t phl i a = b to o a = b switching characteristics over operating range - industrial 54fct521t 54fct521at 54fct521bt 54fct521ct symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh propagation delay c l = 50pf 1.5 15 1.5 9.5 1.5 7.3 1.5 5.1 ns t phl ax or bx to o a = b r l = 500 ? t plh propagation delay 1.5 9 1.5 7.8 1.5 6 1.5 4.5 ns t phl i a = b to o a = b switching characteristics over operating range - military
military and industrial temperature ranges idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator 5 pulse generator r t d.u.t . v cc v in c l v out 50pf 500 ? 500 ? 7.0v 3v 1.5v 0v 3v 1.5v 0v 3v 1.5v 0v 3v 1.5v 0v data input timing input asynchronous control preset clear etc. synchronous control t su t h t rem t su t h high-low-high pulse low-high-low pulse t w 1.5v 1.5v same phase input transition 3v 1.5v 0v 1.5v v oh t plh output opposite phase input transition 3v 1.5v 0v t plh t phl t phl v ol control input 3v 1.5v 0v 3.5v 0v output normally low output normally high switch closed switch open v ol 0.3v 0.3v t plz t pzl t pzh t phz 3.5v 0v 1.5v 1.5v enable disable v oh preset clear clock enable etc. octal link octal link octal link octal link octal link test circuits and waveforms propagation delay test circuits for all outputs enable and disable times set-up, hold, and release times pulse width notes: 1. diagram shown for input control enable-low and input control disable-high. 2. pulse generator for all pulses: rate 1.0mhz; t f 2.5ns; t r 2.5ns. test switch open drain disable low closed enable low all other tests open switch position definitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance: should be equal to z out of the pulse generator.
military and industrial temperature ranges 6 idt54/74fct521t/at/bt/ct fast cmos 8-bit identity comparator ordering information idt xx temp. range fct xxxx device type xx package x process fast cmos 8-bit identity comparator 521t 521at 521bt 521ct so py q industrial options small outline ic shrink small outline package quarter-size small outline package d l military options cerdip leadless chip carrier blank b industrial mil-std-883, class b 54 74 ? 55 c to +125 c ? 40 c to +85 c 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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