1 ps2029b 10/27/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct827/828t (25 w w w w w series) p174fct2827/2828t 10-bit buffers logic block diagram note: pi74fct827 is shown. product description pericom semiconductors pi74fct series of logic circuits are produced in the companys advanced 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 pi74fct827/828t and the pi74fct2827/2828t are 10-bit wide bus drivers providing high-performance bus interface buffering for wide address/data paths or buses carrying parity. the 10-bit buffers have nand-ed output enables for maximum control flexibility. they are designed for high-capacitance load drive capability, while providing low-capacitance bus loading at both inputs and outputs. the pi74fct827/2827t is a non-inverting of the pi74fct828/2828t. device models available upon request. product features ? pi74fct827/828/2827/2828t 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: C40c to +85c ? packages available: C 24-pin 300-mil wide plastic dip (p) C 24-pin 150-mil wide plastic qsop (q) C 24-pin 150-mil wide plastic tqsop (r) C 24-pin 300-mil wide plastic soic (s) 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 fast cmos 10-bit buffers pi74fct827t, pi74fct828t (25 w w w w w series) pi74fct2827t (25 w w w w w series) PI74FCT2828T d 0 y 0 d 1 y 1 d 2 y 2 d 3 y 3 d 4 y 4 d 5 y 5 d 6 y 6 d 7 y 7 d 8 y 8 d 9 y 9 oe 1 oe 2
2 ps2029b 10/27/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct827/828t (25 w w w w w series) p174fct2827/2828t 10-bit buffers 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 oe d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 gnd vcc y0 y1 y2 y3 y4 y5 y6 y7 y8 y9 oe2 pin name description oe n output enable input (active low) d0-d9 10-bit data inputs y0-y9 10-bit data outputs gnd ground v cc power product pin description product pin configuration inputs outputs function oe1 oe2 d n y n transparent llll llhh three-state h x x z xhxz inputs outputs function oe 1 oe 2 d n y n transparent l l l h llhl three-state h x x z xhxz 1. h = high voltage level l = low voltage level x = dont care z = high impedance pi74fct827/2827t truth table (non-inverting) (1) pi74fct828/2828t truth table (inverting) (1) 24-pin p24 q24 r24 s24
3 ps2029b 10/27/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct827/828t (25 w w w w w series) p174fct2827/2828t 10-bit buffers maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) storage temperature ................................................................. C65c to +150c ambient temperature with power applied .................................. -40c to +85c supply voltage to ground potential (inputs & vcc only) .......... C0.5v to +7.0v supply voltage to ground potential (outputs & d/o only) ....... C0.5v to +7.0v dc input voltage ......................................................................... C0.5v to +7.0v dc output current .................................................................................... 120ma power dissipation ......................................................................................... 0.5w 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 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. dc electrical characteristics (over the operating range, t a = C40c to +85c, v cc = 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 = C15.0ma 2.4 3.0 v v ol output low current v cc = min., v in = v ih or v il i ol = 48ma 0.3 0.50 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 C1 a i ozh high impedance v cc = m ax .v out = 2.7v 1 a i ozl output current v out = 0.5v C1 a v ik clamp diode voltage v cc = min., i in = C18ma C0.7 C1.2 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 C60 C120 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.
4 ps2029b 10/27/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct827/828t (25 w w w w w series) p174fct2827/2828t 10-bit buffers power supply characteristics parameters description test conditions (1) min. typ (2) max. units i cc quiescent power v cc = max. v in = gnd 0.1 500 a supply current or v cc d i cc supply current per v cc = max. v in = 3.4v (3) 0.5 2.0 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 1 = oe 2 = gnd one input 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 cp = 10 mh z 50% duty cycle v in = 3.4v 1.8 4.5 (5) oe 1 = oe 2 = gnd v in = gnd f i = 5 mh z one bit toggling v cc = max., v in = v cc 3.0 6.0 (5) outputs open v in = gnd f cp = 10 mh z 50% duty cycle v in = 3.4v 5.0 14.0 (5) oe 1 = oe 2 = gnd v in = gnd eight bits toggling f i = 2.5 mh z 50% duty cycle 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 ps2029b 10/27/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct827/828t (25 w w w w w series) p174fct2827/2828t 10-bit buffers 827at/2827at 827bt/2827bt 827ct/2827ct 827dt 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 5.0 1.5 4.4 1.5 3.8 t phl d n to y n r l = 500 w c l = 300pf (3) 1.5 15.0 1.5 13.0 1.5 10.0 1.5 7.5 r l = 500 w t pzh output enable time c l = 50pf 1.5 9.5 1.5 8.0 1.5 7.0 1.5 5.0 ns t pzl oe n to y n r l = 500 w c l = 300pf (3) 1.5 23.0 1.5 15.0 1.5 14.0 1.5 9.0 r l = 500 w t phz output disable time (3) c l = 5pf (3) 1.5 8.5 1.5 6.0 1.5 5.7 1.5 4.3 t plz oe n to y n r l = 500 w c l = 50pf 1.5 10.0 1.5 7.0 1.5 6.0 1.5 4.3 r l = 500 w 828at/2828at 828bt/2828bt 828ct com. com. com. parameters description conditions (1) min. max. min. max. min. max. units t plh propagation delay c l = 50 pf 1.5 6.5 1.5 5.5 1.5 4.4 ns t phl d n to y n r l = 500 w c l = 300 pf (3) 1.5 15.0 1.5 13.0 1.5 10.0 ns r l = 500 w t pzh output enable time c l = 50 pf 1.5 9.5 1.5 8.0 1.5 7.0 ns t pzl oe n to y n r l = 500 w c l = 300 pf (3) 1.5 23.0 1.5 15.0 1.5 14.0 ns r l = 500 w t phz output disable time (3) c l = 5 pf (3) 1.5 8.5 1.5 6.0 1.5 5.7 ns t plz oe n to y n r l = 500 w c l = 50 pf 1.5 10.0 1.5 7.0 1.5 6.0 ns r l = 500 w notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. 3. this parameter is guaranteed but not production tested. pi74fct828/2828t (inverting) switching characteristics over operating range pi74fct827/2827t (non-inverting) switching characteristics over operating range pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com
|
