1 ps2011b 12/11/00 logic block diagrams pi74fct240/2240t pi74fct241/2241t pi74fct244/2244t pi74fct540t pi74fct541/2541t *logic diagram shown for 540t. 541/2541t is the non-inverting option. product description pericom semiconductor?s pi74fct series of logic circuits are produced in the company?s advanced 0.6/0.8 micron cmos technology, achieving industry leading speed grades. all pi74fct2xxx devices have a built-in 25 ohm series resistor on all outputs to reduce noise because of reflections, thus eliminating the need for an external terminating resistor. the pi74fct240t/241t/244t/540t/541t and p174fct2240t/ 2241t/2244/2541t are 8-bit wide driver circuits, designed to be used in applications requiring high-speed and high-output drive. ideal applications would include bus drivers, memory drivers, address drivers, and system clock drivers. the pi74fct540t and pi74fct541/2541t provide similar driver capabilities, but have their pins physically grouped by function. all inputs are located on one side of the package, while outputs are on the opposite side, allowing for a much simpler and denser board layout. product features ? pi74fct240/241/244/540/541t and pi74fct2240/2241/2244/ 2541t are pin compatible with bipolar fast? series at a higher speed and lower power consumption ? 25 w series resistor on all outputs (fct2xxx only) ? ttl input and output levels ? low ground bounce outputs ? extremely low static power ? hysteresis on all inputs ? industrial operating temperature range: ?40c to +85c ? packages available: ? 20-pin 173 mil wide plastic tssop (l) ? 20-pin 209 mil wide plastic ssop (h) ? 20-pin 300 mil wide plastic dip (p) ? 20-pin 150 mil wide plastic qsop (q) ? 20-pin 150 mil wide plastic tqsop (r) ? 20-pin 300 mil wide plastic soic (s) ? device models available upon request oe a da 0 ob 0 ob 1 da 1 ob 2 da 2 ob 3 da 3 oa 0 db 0 oe b oa 1 db 1 oa 2 db 2 oa 3 db 3 oe a da 0 ob 0 ob 1 da 1 ob 2 da 2 ob 3 da 3 oa 0 db 0 oe b * oa 1 db 1 oa 2 db 2 oa 3 db 3 241 only * oe b for 241t, * oe b for 244t, oe a d 0 o 0 oe b d 1 o 1 d 2 o 2 d 3 o 3 d 4 o 4 d 5 o 5 d 6 o 6 d 7 o 7 1 2345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012 12345678901 2 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 fast cmos octal buffer/line drivers pi74fct240t/241t/ 244t/540t/541t (25 ohmseries) pi74fct2240t/2241t/2244t/2541t
2 ps2011b 12/11/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct240t/241t/244t/540t/541t (25 ohm series) pi74fct2240t/2241t/2244t/2541t octal buffer/line drivers product pin description pin name description oea, oeb 3-state output enable inputs (active low) oeb (1) 3-state output enable input (active high) dxx inputs oxx outputs gnd ground v cc power inputs (1) outputs (1) oe a oe b oe b (2) d 240 241 244 540 541 ll hlhllhl ll hhlhhlh h h l x zzzzz truth table pi74fct540/541/2541t product pin configuration note: 1. h = high voltage level, x = don't care, l = low voltage level, z = high impedance 2. oe b for 241 only. pi74fct241/2241/244/2244t product pin configuration pi74fct240/2240t product pin configuration *oe b for 241t, oe b for 244t *ox for 540t, ox for 541t 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 oe a da 0 ob 0 da 1 ob 1 da 2 ob 2 da 3 ob 3 gnd vcc oe b oa 0 db 0 oa 1 db 1 oa 2 db 2 oa 3 db 3 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 oe a da 0 ob 0 da 1 ob 1 da 2 ob 2 da 3 ob 3 gnd vcc oe b oa 0 db 0 oa 1 db 1 oa 2 db 2 oa 3 db 3 20-pin h20 l20 p20 q20 r20 s20 20-pin h20 l20 p20 q20 r20 s20 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 oe a d 0 d 1 d 2 d 3 d 4 d 5 d 6 d 7 gnd vcc oe b o 0 * o 2 * o 2 * o 3 * o 4 * o5* o 6 * o 7 * 20-pin h20 l20 p20 q20 r20 s20
3 ps2011b 12/11/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct240t/241t/244t/540t/541t (25 ohm series) pi74fct2240t/2241t/2244t/2541t octal buffer/line drivers maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) note: stresses greater than those listed under 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 condi- tions 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. dc electrical characteristics (over the operating range, ta = ?40c to +85c, vcc = 5.0v 5%) parameters description test conditions (1) min. typ (2) max. units v oh output high voltage v cc = min., v in = v ih or v il i oh = ?15.0ma 2.4 3.0 v v ol output low current v cc = min., v in = v ih or v il i ol = 64ma 0.3 0.55 v v ol output low current v cc = min., v in = v ih or v il i ol = 12ma (25 w series) 0.3 0.50 v v ih input high voltage guaranteed logic high level 2.0 v v il input low voltage guaranteed logic low level 0.8 v i ih input high current v cc = max. v in = v cc 1a i il input low current v cc = max. v in = gnd ?1 a i ozh high impedance v cc = m ax .v out = 2.7v 1 a i ozl output current v out = 0.5v ?1 a v ik clamp diode voltage v cc = min., i in = ?18ma ?0.7 ?1.2 v i off power down disable v cc = gnd, v out = 4.5v ? ? 100 a i os short circuit current v cc = max. (3) , v out = gnd ?60 ?120 ma v h input hysteresis 200 mv capacitance (t a = 25c, f = 1 mhz) parameters (4) description test conditions typ max. units c in input capacitance v in = 0v 6 10 pf c out output capacitance v out = 0v 8 12 pf notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device type . 2. typical values are at vcc = 5.0v, +25c ambient and maximum loading. 3. not more than one output should be shorted at one time. duration of the test should not exceed one second. 4. this parameter is determined by device characterization but is not production tested. storage temperature ........................................................... ?65c to +150c ambient temperature with power applied ........................... -40c to +85c supply voltage to ground potential (inputs & vcc only) .... ?0.5v to +7.0v supply voltage to ground potential (outputs & d/o only) .?0.5v to +7.0v dc input voltage ....................................................................?0.5v to +7.0v dc output current ............................................................................... 120ma power dissipation ................................................................................... 0.5w
4 ps2011b 12/11/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct240t/241t/244t/540t/541t (25 ohm series) pi74fct2240t/2241t/2244t/2541t octal buffer/line drivers power supply characteristics parameters description test conditions (1) min. typ (2) max. units i cc quiescent power v cc = max. v in = gnd or v cc 0.1 500 a supply current d i cc supply current per v cc = max. v in = 3.4v (3) 0.5 2.5 ma input @ ttl high i ccd supply current per v cc = max., v in = v cc 0.15 0.25 ma/ input per mhz (4) outputs open v in = gnd mhz oe a = oe b = gnd or oe a = gnd, oe b = v cc one bit toggling 50% duty cycle i c total power supply v cc = max., v in = v cc 1.5 3.5 (5) ma current (6) outputs open v in = gnd f i = 10 mh z 50% duty cycle oe a = oe b = gnd or v in = 3.4v 1.8 4.5 (5) oe a = gnd, oe b = v cc v in = gnd one bit toggling v cc = max., v in = v cc 3.0 6.0 (5) outputs open v in = gnd f i = 2.5 mh z 50% duty cycle oe a = oe b = gnd or v in = 3.4v 5.0 14.0 (5) oe a = gnd, oe b = v cc v in = gnd eight bits toggling notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device. 2. typical values are at vcc = 5.0v, +25c ambient. 3. per ttl driven input (v in = 3.4v); all other inputs at vcc 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 icc 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.
5 ps2011b 12/11/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct240t/241t/244t/540t/541t (25 ohm series) pi74fct2240t/2241t/2244t/2541t octal buffer/line drivers pi74fct240/2240t switching characteristics over operating range 240t/2240t 240at/2240at 240ct/2240ct 240dt com. com. com. com. parameters description conditions (1) min max min max min max min max units t plh propagation delay c l = 50pf 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 ns t phl d n to o n r l = 500 w t pzh output enable time 1.5 10.0 1.5 6.2 1.5 5.8 1.5 4.8 ns t pzl oe x to o n t phz output disable time(3) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 ns t plz oe x to o n pi74fct241/2241t switching characteristics over operating range 241t/2241t 241at/2241at 241ct/2241ct 241dt com. com. com. com. parameters description conditions (1) min max min max min max min max units t plh propagation delay c l = 50pf 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.6 ns t phl d n to o n r l = 500 w t pzh output enable time 1.5 8.0 1.5 6.2 1.5 5.8 1.5 4.8 ns t pzl oe a /oe b to o n t phz output disable time (3) 1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.0 ns t plz oe a /oe b to o n pi74fct244/2244t switching characteristics over operating range 244t/2244t 244at/2244at 244ct/2244ct 244dt com. com. com. com. parameters description conditions (1) min max min max min max min max units t plh propagation delay c l = 50pf 1.5 6.5 1.5 4.8 1.5 4.1 1.5 3.6 ns t phl d n to o n r l = 500 w t pzh output enable time 1.5 8.0 1.5 6.2 1.5 5.8 1.5 4.8 ns t pzl oe x to o n t phz output disable time (3) 1.5 7.0 1.5 5.6 1.5 5.2 1.5 4.0 ns t plz oe x to o n notes: 1. see test circuit and wave forms. 2. minimum limits are guaranteed but not tested on propagation delays. 3. this parameter is guaranteed but not production tested.
6 ps2011b 12/11/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct240t/241t/244t/540t/541t (25 ohm series) pi74fct2240t/2241t/2244t/2541t octal buffer/line drivers pi74fct540t switching characteristics over operating range 540t 540at 540ct 540dt com. com. com. com. parameters description conditions (1) min max min max min max min max units t plh propagation delay c l = 50pf 1.5 5.5 1.5 4.8 1.5 4.3 1.5 3.8 ns t phl d n to o n r l = 500 w t pzh output enable time 1.5 10.0 1.5 6.2 1.5 5.8 1.5 5.2 ns t pzl oe x to o n t phz output disable time (3) 1.5 6.0 1.5 5.6 1.5 5.2 1.5 5.2 ns t plz oe x to o n pi74fct541/2541t switching characteristics over operating range 541t/2541t 541at/2541at 541ct/2541ct 541dt com. com. com. com. parameters description conditions (1) min max min max min max min max units t plh propagation delay c l = 50pf 1.5 6.0 1.5 4.8 1.5 4.1 1.5 3.8 ns t phl d n to o n r l = 500 w t pzh output enable time 1.5 9.5 1.5 6.2 1.5 5.8 1.5 5.2 ns t pzl oe x to o n t phz output disable time (3) 1.5 6.5 1.5 5.6 1.5 5.2 1.5 5.2 ns t plz oe x to o n notes: 1. see test circuit and wave forms. 2. minimum limits are guaranteed but not tested on propagation delays. 3. this parameter is guaranteed but not production tested. pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com
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