pi74lpt16240 3.3v 16-bit buffer/line driver 1 ps2066a 01/15/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 logic block diagram 1 oe 1 a 0 1 y 0 1 a 1 1 y 1 1 a 2 1 y 2 1 a 3 1 y 3 3 oe 3 a 0 3 y 0 3 a 1 3 y 1 3 a 2 3 y 2 3 a 3 3 y 3 2 oe 2 a 0 2 y 0 2 a 1 2 y 1 2 a 2 2 y 2 2 a 3 2 y 3 4 oe 4 a 0 4 y 0 4 a 1 4 y 1 4 a 2 4 y 2 4 a 3 4 y 3 pi74lpt16240 fast cmos 3.3v 16-bit buffer/line driver 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 product features: ? compatible with lcx? and lvt? families of products ? supports 5v tolerant mixed signal mode operation ? input can be 3v or 5v ? output can be 3v or connected to 5v bus ? advanced low power cmos operation ? excellent output drive capability: balanced drives (24 ma sink and source) ? pin compatible with industry standard double-density pinouts ? low ground bounce outputs ? hysteresis on all inputs ? industrial operating temperature range: ?40c to +85c ? multiple center pins and distributed vcc/gnd pins minimize switching noise ? packages available: ? 48-pin 240 mil wide thin plastic tssop (a) ? 48-pin 300 mil wide plastic ssop (v) product description pericom semiconductor?s pi74lpt series of logic circuits are pro- duced using the company?s advanced 0.6 micron cmos technology, achieving industry leading speed grades. the pi74lpt16240 is an inverting 16-bit buffer/line driver designed for applications driving high-capacitance loads and low impedance backplanes. this high-speed, low power device offers bus/backplane interface capability and a flow-through organization for ease of board layout. this device is designed with three-state controls to operate in a quad-nibble, dual-byte, or a single 16-bit word mode. the pi74lpt16240 can be driven from either 3.3v or 5.0v devices allowing this device to be used as a translator in a mixed 3.3/5.0v system.
pi74lpt16240 3.3v 16-bit buffer/line driver 2 ps2066a 01/15/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 product pin description pin name description x oe 3-state output enable inputs (active low) xax inputs xyx 3-state outputs gnd ground v cc power inputs (1) outputs (1) x oe xax xyx ll h lh l hx z truth table note: 1. h = high voltage level, x = don't care, l = low voltage level, z = high impedance product pin configuration note: 1. this parameter is determined by device characterization but is not production tested. capacitance (t a = 25c, f = 1 mhz) parameters (1) description test conditions typ max. units c in input capacitance v in = 0v 4.5 6 pf c out output capacitance v out = 0v 5.5 8 pf 1 2 3 4 5 6 7 8 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 32 31 30 29 28 27 26 25 1oe 1y0 1y1 gnd 1y2 1y3 vcc 2y0 2y1 gnd 2y2 2y3 3y0 3y1 gnd 3y2 3y3 vcc 4y0 4y1 gnd 4y2 4y3 4oe 2oe 1a0 1a1 gnd 1a2 1a3 vcc 2a0 2a1 gnd 2a2 2a3 3a0 3a1 gnd 3a2 3a3 vcc 4a0 4a1 gnd 4a2 4a3 3oe 48-pin a,v
pi74lpt16240 3.3v 16-bit buffer/line driver 3 ps2066a 01/15/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 2.7v to 3.6v) parameters description test conditions (1) min. typ (2) max. units v ih input high voltage (input pins) guaranteed logic high level 2.2 ? 5.5 v input high voltage (i/o pins) 2.0 ? 5.5 v v il input low voltage guaranteed logic low level ?0.5 ? 0.8 v (input and i/o pins) i ih input high current (input pins) v cc = max. v in = 5.5v ? ? 1 a input high current (i/o pins) v cc = max. v in = v cc ??1a i il input low current (input pins) v cc = max. v in = gnd ? ? 1 a input low current (i/o pins) v cc = max. v in = gnd ? ? 1 a i ozh high impedance output current v cc = max. v out = 5.5v ? ? 1 a i ozl (3-state output pins) v cc = max. v out = gnd ? ? 1 a v ik clamp diode voltage v cc = min., i in = ?18 ma ? ?0.7 ?1.2 v i odh output high current v cc = 3.3v, v in = v ih or v il , v o = 1.5v (3) ?36 ?60 ?110 ma i odl output low current v cc = 3.3v, v in = v ih or v il , v o = 1.5v (3) 50 90 200 ma v oh output high voltage v cc = min. i oh = ?0.1 ma vcc-0.2 ? ? v v in = v ih or v il i oh = ?3 ma 2.4 3.0 ? v v cc = 3.0v, i oh = ?8 ma 2.4 (5) 3.0 ? v v in = v ih or v il i oh = ?24 ma 2.0 ? ? v ol output low voltage v cc = min. i ol = 0.1 ma ? ? 0.2 v v in = v ih or v il i ol = 16 ma ? 0.2 0.4 v i ol = 24 ma ? 0.3 0.5 v i os short circuit current (4) v cc = max. (3) , v out = gnd ?60 ?85 ?240 ma i off power down disable v cc = 0v, v in or v out 4.5v ? ? 100 a v h input hysteresis ? 150 ? mv 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 sec- tions of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 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 = 3.3v, +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 guaranteed but not tested. 5. v oh = v cc ? 0.6v at rated current. storage temperature ............................................................. ?55c to +125c 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 .............................................................................. 120 ma power dissipation .................................................................................... 1.0w
pi74lpt16240 3.3v 16-bit buffer/line driver 4 ps2066a 01/15/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 power supply characteristics parameters description test conditions (1) min. typ (2) max. units i cc quiescent power supply current v cc = max. v in = gnd or v cc 0.1 10 a d i cc quiescent power supply current v cc = max. v in = v cc ? 0.6v (3) 2.0 30 a ttl inputs high i ccd dynamic power supply (4) v cc = max., v in = v cc 50 75 a/ outputs open v in = gnd mhz x oe = gnd one bit toggling 50% duty cycle i c total power supply v cc = max., v in = v cc ? 0.6v 0.6 2.3 ma current (6) outputs open v in = gnd f i = 10 mh z 50% duty cycle x oe = gnd one bit toggling v cc = max., v in = v cc ? 0.6v 2.1 4.7 (5) outputs open v in = gnd f i = 2.5 mh z 50% duty cycle x oe = gnd 16 bits toggling notes: 1. for max. or min. condition, use appropriate value specified under electrical characteristics for the applicable device. 2. typical values are at vcc = 3.3v, +25c ambient. 3. per ttl driven input; 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 (i ccl , i cch and i ccz ) d i cc = power supply current for a ttl high input 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) n cp = number of clock inputs at f cp f i = input frequency n i = number of inputs at f i all currents are in milliamps and all frequencies are in megahertz.
pi74lpt16240 3.3v 16-bit buffer/line driver 5 ps2066a 01/15/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 switching characteristics over operating range (1) lpt16240 lpt16240a lpt16240c com. com. com. parameters description conditions (2) min (3) max min (3) max min (3) max unit t plh propagation delay c l = 50 pf 1.5 4.9 1.5 4.8 1.5 4.3 ns t phl x a x to x y x r l = 500 w t pzh output enable time 1.5 7.0 1.5 6.2 1.5 5.8 ns t pzl xoe to xyx t phz output disable time (4) 1.5 7.0 1.5 5.6 1.5 5.2 ns t plz xoe to xyx t sk (o) output skew (5) 0.5 0.5 0.5 ns notes: 1. propagation delays and enable/disable times are with vcc = 3.3v 0.3v, normal range. for vcc = 2.7v, extended range, all propagation delays and enable/disable times should be degraded by 20%. 2. see test circuit and wave forms. 3. minimum limits are guaranteed but not tested on propagation delays. 4. this parameter is guaranteed but not production tested. 5. skew between any two outputs, of the same package, switching in the same direction. this parameter is guaranteed by design. 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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