military and commercial temperature ranges idt54/74fct521/a/b/c fast cmos 8-bit identity comparator 1 june 2002 military and commercial temperature ranges the idt logo is a registered trademark of integrated device technology, inc. ? 2002 integrated device technology, inc. dsc-4617/8 features: ? idt54/74fct521 equivalent to fast? speed ? idt54/74fct521a up to 35% faster than fast ? idt54/74fct521b up to 35% faster than fast ? idt54/74fct521c up to 60% faster than fast ? eqivalent to fast output drive over full temperature and voltage supply extremes ?i ol = 48ma (commercial) and 32ma (military) ? cmos power levels (1mw typ. static) ? ttl input and output level compatible ? cmos output level compatible ? substantially lower input current levels than fast (5 a max.) ? military product compliant to mil-std-883, class b ? meets or exceeds jedec standard 18 specifications ? available in the following packages: ? commercial: soic ? military: cerdip, lcc functional block diagram idt54/74fct521/a/b/c fast cmos 8-bit identity comparator description: the fct521 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 commercial temperature ranges 2 idt54/74fct521/a/b/c fast cmos 8-bit identity comparator pin configuration cerdip/ soic top view lcc top view symbol rating com mercial military unit v term (2) terminal voltage ?0.5 to +7 ?0.5 to +7 v with respect to gnd v term (3) terminal voltage ?0.5 to v cc ?0.5 to v cc v with respect to gnd t a operating temperature 0 to +70 ?55 to +125 c t bias temperature under bias ?55 to +125 ?65 to +135 c t stg storage temperature ?55 to +125 ?65 to +150 c p t power dissipation 0.5 0.5 w i out dc output current 120 120 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. input and vcc terminals only. 3. output and i/o terminals only. 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. 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 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 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 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 commercial temperature ranges idt54/74fct521/a/b/c 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 v i = v cc ?? 5 v cc = max. v i = 2.7v ? ? 5 (4) a i il input low current v i = 0.5v ? ? ?5 (4) v i = gnd ? ? ?5 i ozh v o = v cc ?? 10 off state (high impedance) v cc = max. v o = 2.7v ? ? 10 (4) a i ozl output current v o = 0.5v ? ? ?10 (4) v o = gnd ? ? ?10 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 ? ma v oh output high voltage v cc = 3v, v in = v lc or v hc , i oh = ?32 av hc v cc ? v cc = min i oh = ?300 av hc v cc ?v v in = v ih or v il i oh = ?12ma mil 2.4 4.3 ? i oh = ?15ma com'l 2.4 4.3 ? v ol output low voltage v cc = 3v, v in = v lc or v hc , i ol = 300 a ? gnd v lc v cc = min i ol = 300 a ? gnd v lc (4) v v in = v ih or v il i ol = 32ma mil ? 0.3 0.5 i ol = 48ma com'l ? 0.3 0.5 dc electrical characteristics over operating range following conditions apply unless otherwise specified: v lc = 0.2v; v hc = v cc - 0.2v commercial: t a = 0c to +70c, 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 and maximum loading. 3. not more than one output should be tested at one time. duration of the test should not exceed one second. 4. this parameter is guaranteed but not ttested.
military and commercial temperature ranges 4 idt54/74fct521/a/b/c fast cmos 8-bit identity comparator 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 + fini) 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) fi = input frequency ni = number of inputs at fi all currents are in milliamps and all frequencies are in megahertz. power supply characteristics v lc = 0.2v; v hc = v cc - 0.2v symbol parameter test conditions (1) min. typ. (2) max. unit i cc quiescent power supply current v cc = max. ? 0.2 1.5 ma v in v hc ; v in v lc 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 hc ? 0.15 0.25 ma/ current (4) outputs open v in v lc mhz one input toggling 50% duty cycle i c total power supply current (5,6) v cc = max. v in v hc ? 1.7 4 ma outputs open v in v lc (fct) f i = 10mhz v in = 3.4v ? 2 5 one bit toggling v in = gnd 50% duty cycle notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. switching characteristics over operating range - commercial 74fct521a 74fct521c 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 - military 54fct521 54fct521a 54fct521b symbol parameter condition (1) 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 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 ns t phl i a = b to o a = b
military and commercial temperature ranges idt54/74fct521/a/b/c fast cmos 8-bit identity comparator 5 pulse generator r t d.u.t . v cc v in c l v out 50pf 500w 500w 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; z o 50 ; 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 commercial temperature ranges 6 idt54/74fct521/a/b/c fast cmos 8-bit identity comparator ordering information idt xx temp. range xxxx device type xx package x process so commercial options small outline ic fast cmos 8-bit identity comparator 54 74 ? 55c to +125c ? 0c to +70c d l military options cerdip leadless chip carrier blank b commercial mil-std-883, class b fct 521 521a 521b 521c 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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