idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 1 integrated device technology, inc. military and commercial temperature ranges december 1995 1996 integrated device technology, inc. 6.8 dsc-2565/6 1 description: the idt octal buffer/line drivers are built using an advanced dual metal cmos technology. the fct240t/fct2240t and fct244t/fct2244t are designed to be employed as memory and address drivers, clock drivers and bus-oriented transmit- ter/receivers which provide improved board density. the fct540t and fct541t/fct2541t are similar in function to the fct240t/fct2240t and fct244t/fct2244t, respectively, except that the inputs and outputs are on oppo- site sides of the package. this pinout arrangement makes these devices especially useful as output ports for micropro- cessors and as backplane drivers, allowing ease of layout and greater board density. the fct2240t, fct2244t and fct2541t have balanced output drive with current limiting resistors. this offers low ground bounce, minimal undershoot and controlled output fall times-reducing the need for external series terminating resis- tors. fct2xxxt parts are plug-in replacements for fctxxxt parts. fast cmos octal buffer/line drivers the idt logo is a registered trademark of integrated device technology, inc. idt54/74fct240t/at/ct/dt - 2240t/at/ct idt54/74fct244t/at/ct/dt - 2244t/at/ct idt54/74fct540t/at/ct idt54/74fct541/2541t/at/ct features: common features: low input and output leakage 1 m a (max.) cmos power levels true ttl input and output compatibility ?v oh = 3.3v (typ.) ?v ol = 0.3v (typ.) meets or exceeds jedec standard 18 specifications product available in radiation tolerant and radiation enhanced versions military product compliant to mil-std-883, class b and desc listed (dual marked) available in dip, soic, ssop, qsop, cerpack and lcc packages features for fct240t/fct244t/fct540t/fct541t: std., a, c and d speed grades high drive outputs (-15ma i oh , 64ma i ol ) features for fct2240t/fct2244t/fct2541t: std., a and c speed grades resistor outputs (-15ma i oh , 12ma i ol com.) (-12ma i oh , 12ma i ol mil.) reduced system switching noise 2565 drw 03 2565 drw 02 2565 drw 01 da 0 da 1 da 2 da 3 db 0 db 1 db 2 db 3 fct240/2240t da 0 ob 0 da 1 ob 1 da 2 ob 2 da 3 ob 3 oa 0 db 0 oa 1 db 1 db 2 db 3 oa 2 oa 3 fct244/2244t d 0 o 0 d 1 d 2 d 3 d 4 d 5 d 6 d 7 o 1 o 2 o 3 o 4 o 5 o 6 o 7 fct540/541/2541t *logic diagram shown for 'fct540. 'fct541/2541t is the non-inverting option. oe a oe b oe a oe b oe a ob 0 ob 1 ob 2 ob 3 oe b oa 0 oa 1 oa 2 oa 3 functional block diagrams
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 2 pin configurations fct240/2240t fct244/2244t 2565 drw 08 2565 drw 04 2565 drw 07 da 0 da 1 da 2 da 3 gnd db 0 db 1 db 2 db 3 v cc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dip/soic/ssop/qsop/cerpack top view p20-1 d20-1 so20-2 so20-7 so20-8 & e20-1 index da 1 da 2 da 3 db 0 db 1 da 0 ob 0 oe a v cc oe b ob 3 gnd db 3 oa 3 db 2 lcc top view 3 2 20 19 1 4 5 6 7 8 18 17 16 15 14 9 10111213 l20-2 oe a ob 0 ob 1 ob 2 ob 3 oe b oa 0 oa 1 oa 2 oa 3 ob 1 ob 2 oa 0 oa 1 oa 2 da 0 ob 0 da 1 ob 1 da 2 ob 2 da 3 ob 3 gnd oa 0 db 0 oa 1 db 1 db 2 db 3 oa 2 oa 3 v cc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dip/soic/ssop/qsop/cerpack top view p20-1 d20-1 so20-2 so20-7 so20-8 & e20-1 index da 1 ob 1 da 2 ob 2 da 3 oa 0 db 0 oa 1 db 1 oa 2 da 0 ob 0 v cc oe b * ob 3 gnd db 3 oa 3 db 2 lcc top view 3 2 20 19 1 4 5 6 7 8 18 17 16 15 14 910 1213 l20-2 11 oe b oe a oe a 2565 drw 05 fct540/541/2541t d 0 d 2 d 3 d 4 d 5 d 6 d 7 gnd o 0 * o 1 * o 2 * o 3 * o 5 * o 7 * o 4 * o 6 * v cc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dip/soic/qsop/cerpack top view p20-1 d20-1 so20-2 so20-8 & e20-1 index d 2 d 3 d 4 d 5 d 6 o 0 * o 1 * o 2 * o 3 * o 4 * lcc top view 3 2 20 19 1 4 5 6 7 8 18 17 16 15 14 9 10111213 l20-2 d 1 d 0 v cc d 7 gnd o 7 * o 6 * o 5 * oe a oe a oe b oe b d 1 2565 drw 06 2565 drw 09 * o x for 540, ox for 541/2541t
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 3 pin description function table absolute maximum ratings (1) capacitance (t a = +25 c, f = 1.0mhz) symbol rating commercial military unit v term (2) terminal voltage with respect to gnd C0.5 to +7.0 C0.5 to +7.0 v v term (3) terminal voltage with respect to gnd C0.5 to v cc +0.5 C0.5 to v cc +0.5 v t a operating temperature 0 to +70 C55 to +125 c t bias temperature under bias C55 to +125 C65 to +135 c t stg storage temperature C55 to +125 C65 to +150 c p t power dissipation 0.5 0.5 w i out dc output current C60 to +120 C60 to +120 ma 2565 lnk 03 notes: 1. stresses greater than those listed under absolute maximum rat- ings 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 v cc by +0.5v unless otherwise noted. 2. input and v cc terminals only. 3. outputs and i/o terminals only. notes: 2565 tbl 02 1. h = high voltage level x = dont care l = low voltage level z = high impedance 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 2565 lnk 04 note: 1. this parameter is measured at characterization but not tested. pin names description oe a , oe b 3Cstate output enable inputs (active low) dxx inputs oxx outputs 2565 tbl 01 inputs (1) outputs (1) oe oe a oe oe b d 240 244 540 541 lllh lhl llhlhlh h h x zzzz
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 4 dc electrical characteristics over operating range following conditions apply unless otherwise specified: commercial: t a = 0 c to +70 c, v cc = 5.0v 5%; military: t a = C55 c to +125 c, v cc = 5.0v 10% symbol parameter test conditions (1) min. typ. (2) max. unit v ih input high level guaranteed logic high level 2.0 v v il input low level guaranteed logic low level 0.8 v i i h input high current (4) v cc = max. v i = 2.7v 1 m a i i l input low current (4) v i = 0.5v 1 i ozh high impedance output current v cc = max. v o = 2.7v 1 m a i ozl (3-state output pins) (4) v o = 0.5v 1 i i input high current (4) v cc = max., v i = v cc (max.) 1 m a v ik clamp diode voltage v cc = min., i in = C18ma C0.7 C1.2 v v h input hysteresis 200 mv i cc quiescent power supply current v cc = max., v in = gnd or v cc 0.01 1 ma 2565 lnk 05 output drive characteristics for fct240/244/540/541t symbol parameter test conditions (1) min. typ. (2) max. unit v oh output high voltage v cc = min. v in = v ih or v il i oh = C6ma mil. i oh = C8ma com'l. 2.4 3.3 v i oh = C12ma mil. i oh = C15ma com'l. 2.0 3.0 v v ol output low voltage v cc = min. v in = v ih or v il i ol = 48ma mil. i ol = 64ma com'l. 0.3 0.55 v i os short circuit current v cc = max., v o = gnd (3) C60 C120 C225 ma 2565 lnk 06 output drive characteristics for fct2240/2244/2541t 2565 lnk 07 notes: 1. for conditions shown as max. or min., use appropriate value specified under electrical characteristics for the applicable device type. 2. typical values are at vcc = 5.0v, +25 c ambient. 3. not more than one output should be shorted at one time. duration of the short circuit test should not exceed one second. 4. the test limit for this parameter is 5 m a at t a = C55 c. symbol parameter test conditions (1) min. typ. (2) max. unit i odl output low current v cc = 5v, v in = v ih or v il, v out = 1.5v (3) 16 48 ma i odh output high current v cc = 5v, v in = v ih or v il, v out = 1.5v (3) C16 C48 ma v oh output high voltage v cc = min. v in = v ih or v il i oh = C12ma mil. i oh = C15ma com'l. 2.4 3.3 v v ol output low voltage v cc = min. v in = v ih or v il i ol = 12ma 0.3 0.50 v
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 5 power supply characteristics symbol parameter test conditions (1) min. typ. (2) max. unit d i cc quiescent power supply current ttl inputs high v cc = max. v in = 3.4v (3) 0.5 2.0 ma i ccd dynamic power supply current (4) v cc = max. outputs open oe a = oe b = gnd v in = v cc v in = gnd fctxxxt 0.15 0.25 ma/ mhz one input toggling 50% duty cycle fct2xxxt 0.06 0.12 i c total power supply current (6) v cc = max. v in = v cc fctxxxt 1.5 3.5 ma outputs open fi = 10mhz v in = gnd fct2xxxt 0.6 2.2 50% duty cycle oe a = oe b = gnd v in = 3.4 fctxxxt 1.8 4.5 one bit toggling v in = gnd fct2xxxt 0.9 3.2 v cc = max. v in = v cc fctxxxt 3.0 6.0 (5) outputs open fi = 2.5mhz v in = gnd fct2xxxt 1.2 3.4 (5) 50% duty cycle oe a = oe b = gnd v in = 3.4 fctxxxt 5.0 14.0 (5) eight bits toggling v in = gnd fct2xxxt 3.2 11.4 ( 5) notes: 1. for conditions shown as max. or min., use appropriate value specified under electrical characteristics for the applicable device type. 2. typical values are at v cc = 5.0v, +25 c 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 the i cc formula. these limits are guaranteed but not tested. 6. i c = i quiescent + i inputs + i dynamic i c = i cc + d i cc d h n t + i ccd (f cp/ 2 + f i n i ) i cc = quiescent current d 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 = input frequency n i = number of inputs at f i all currents are in milliamps and all frequencies are in megahertz. 2565 tbl 08
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 6 switching characteristics over operating range for fct240/2240t 2565 tbl 09 2565 tbl 10 switching characteristics over operating range for fct244/2244t 2565 tbl 11 notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. 2565 tbl 12 fct240t fct2240t fct240at fct2240at com'l. mil. com'l. mil. symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh t phl propagation delay d n to o n c l = 50pf r l = 500 w 1.5 8.0 1.5 9.0 1.5 4.8 1.5 5.1 ns t pzh t pzl output enable time 1.5 10.0 1.5 10.5 1.5 6.2 1.5 6.5 ns t phz t plz output disable time 1.5 9.5 1.5 10.0 1.5 5.6 1.5 5.9 ns fct240ct fct2240ct fct240dt com'l. mil. com'l. mil. symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh t phl propagation delay d n to o n c l = 50pf r l = 500 w 1.5 4.3 1.5 4.7 1.5 3.6 ns t pzh t pzl output enable time 1.5 5.8 1.5 6.5 1.5 4.8 ns t phz t plz output disable time 1.5 5.2 1.5 5.7 1.5 4.0 ns fct244t fct2244t fct244at fct2244at com'l. mil. com'l. mil. symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh t phl propagation delay d n to o n c l = 50pf r l = 500 w 1.5 6.5 1.5 7.0 1.5 4.8 1.5 5.1 ns t pzh t pzl output enable time 1.5 8.0 1.5 8.5 1.5 6.2 1.5 6.5 ns t phz t plz output disable time 1.5 7.0 1.5 7.5 1.5 5.6 1.5 5.9 ns fct244ct fct2244ct fct244dt com'l. mil. com'l. mil. symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh t phl propagation delay d n to o n c l = 50pf r l = 500 w 1.5 4.1 1.5 4.6 1.5 3.6 ns t pzh t pzl output enable time 1.5 5.8 1.5 6.5 1.5 4.8 ns t phz t plz output disable time 1.5 5.2 1.5 5.7 1.5 4.0 ns
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 7 switching characteristics over operating range for fct540/541/2541t notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. 2565 tbl 13 fct540t/541t fct2541t fct540at/541at fct2541at fct540ct/541ct fct2541ct com'l. mil. com'l. mil. com'l. mil. symbol parameter condition (1) min. (2) max. min. (2) max. min. (2) max. min. (2) max. min. (2) max. min. (2) max. unit t plh t phl propagation delay d n to o n fct540 c l = 50pf r l = 500 w 1.5 8.5 1.5 9.5 1.5 4.8 1.5 5.1 1.5 4.3 1.5 4.7 ns t plh t phl propagation delay d n to o n fct541/2541t 1.5 8.0 1.5 9.0 1.5 4.8 1.5 5.1 1.5 4.1 1.5 4.6 ns t pzh t pzl output enable time 1.5 10.0 1.5 10.5 1.5 6.2 1.5 6.5 1.5 5.8 1.5 6.5 ns t phz t plz output disable time 1.5 9.5 1.5 10.0 1.5 5.6 1.5 5.9 1.5 5.2 1.5 5.7 ns
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 8 test circuits and waveforms test circuits for all outputs switch position set-up, hold and release times pulse width test switch disable low enable low closed all other tests open open drain definitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance: should be equal to z out of the pulse generator. 2565 drw 10 2565 drw 14 2565 drw 11 2565 drw 12 2565 drw 13 pulse generator r t d.u.t. v cc v in c l v out 50pf 500 w 500 w 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. propagation delay enable and disable times 2565 drw 14 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
idt54/74fct240/244t/at/ct/dt - 2240/2244t/at/ct, idt54/74fct540/541/2541t/at/ct fast cmos octal buffer/line driver military and commercial temperature ranges 6.8 9 ordering information 2565 drw 15 idt xx temp. range xxxx device type x package x process blank b p d so l e py q 240t 244t 540t 541t 240at 244at 540at 541at 240ct 244ct 540ct 541ct 240dt 244dt commercial mil-std-883, class b plastic dip cerdip small outline ic leadless chip carrier cerpack shrink small outline package quarter-size small outline package inverting octal buffer/line driver non-inverting octal buffer/line driver non-inverting octal buffer/line driver inverting octal buffer/line driver non-inverting octal buffer/line driver 54 74 C55 c to +125 c 0 c to +70 c fct x family blank 2 high drive balanced drive
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