1 ps2037b 07/09/97 logic block diagram 1 oe a 1 a 0 1 y 0 1 oe b 1 a 1 1 y 1 1 a 2 1 y 2 1 a 3 1 y 3 1 a 4 1 y 4 1 a 5 1 y 5 1 a 6 1 y 6 1 a 7 1 y 7 2 oe a 2 a 0 2 y 0 2 oe b 2 a 1 2 y 1 2 a 2 2 y 2 2 a 3 2 y 3 2 a 4 2 y 4 2 a 5 2 y 5 2 a 6 2 y 6 2 a 7 2 y 7 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct16541t pi74fct162541t pi74fct162h541t fast cmos 16-bit octal buffer/line drivers product description pericom semiconductor?s pi74fct series of logic circuits are pro- duced in the company?s advanced 0.6 micron cmos technology, achieving industry leading speed grades. the pi74fct16541t, pi74fct162541t, and pi74fct162h541t arenon-inverting 16-bit buffer/line drivers designed for applications driving high capacitance loads and low impedance backplanes. these high-speed, low power devices offer bus/backplane interface capability and a flow-through organization for ease of board layout. these devices are designed with three-state controls to operate in a dual-byte, or a single 16-bit word mode. the pi74fct16541t output buffers are designed with a power-off disable allowing ?live insertion? of boards when used as backplane drivers. the pi74fct162541t has 24 ma balanced output drivers. it is designed with current limiting resistors at its outputs to control the output edge rate resulting in lower ground bounce and undershoot. this eliminates the need for external terminating resistors for most interface applications. the pi74fct162h541t has ?bus hold? which retains the input?s last state whenever the input goes to high-impedance preventing ?floating? inputs and eliminating the need for pull-up/down resistors. product features common features ? pi74fct16541t, pi74fct162541t, and pi74fct162h541t are high-speed, low power devices with high current drive ?v cc = 5v 10% ? hysteresis on all inputs ? packages available ? 48-pin 240 mil wide plastic tssop (a) ? 48-pin 300 mil wide plastic ssop (v) pi74fct16541t features ? high output drive: i oh = ?32 ma; i ol = 64 ma ? power off disable outputs permit ?live insertion? ? typical v olp (output ground bounce) < 1.0v at v cc = 5v, t a = 25c pi74fct162541t features ? balanced output drivers: 24 ma ? reduced system switching noise ? typical v olp (output ground bounce) < 0.6v at v cc = 5v, t a = 25c pi74fct162h541t features ? bus hold retains last active bus state during 3-state ? eliminates the need for external pull-up resistors
pi74fct16541/162541/162h541t 16-bit buffer/line drivers 2 ps2037b 07/09/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 inputs (1) output (1) 1 oex 2 oex xax xyx llll llhh hxxz xhxz 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 product pin description pin name description x oe 3-state output enable inputs (active low) xax inputs (1) xyx 3-state outputs gnd ground v cc power note : 1. for the pi74fct162h541t, these pins have ?bus hold.? all other pins are standard, outputs, or i/os. function table (each 8-bit section) note: 1. h = high voltage level x = don?t care l = low voltage level z = high impedance product pin configuration 1 oe a 1 y 0 1 y 1 gnd 1 y 2 1 y 3 v cc 1 y 4 1 y 5 gnd 1 y 6 1 y 7 2 y 0 2 y 1 gnd 2 y 2 2 y 3 v cc 2 y 4 2 y 5 gnd 2 y 6 2 y 7 2 oe a 48-pin v48 a48 1 oe b 1 a 0 1 a 1 gnd 1 a 2 1 a 3 v cc 1 a 4 1 a 5 gnd 1 a 6 1 a 7 2 a 0 2 a 1 gnd 2 a 2 2 a 3 v cc 2 a 4 2 a 5 gnd 2 a 6 2 a 7 2 oe b
pi74fct16541/162541/162h541t 16-bit buffer/line drivers 3 ps2037b 07/09/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 5.0v 10%) parameters description test conditions (1) min. typ (2) max. units 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 standard input, v cc = max. v in = v cc 1a i ih input high current standard i/o, v cc = max. v in = v cc 1a i ih input high current bus hold input (4) , v cc = max. v in = v cc 100 a i ih input high current bus hold i/o (4) , v cc = max. v in = v cc 100 a i il input low current standard input, v cc = min. v in = gnd ?1 a i il input low current standard i/o, v cc = min. v in = gnd ?1 a i il input low current bus hold input (4) , v cc = min. v in = gnd 100 a i il input low current bus hold i/o (4) , v cc = min. v in = gnd 100 a i bhh bus hold bus hold input (4) , v cc = min. v in = 2.0v ?50 a i bhl sustain current v in = 0.8v +50 i ozh (5) high-impedance v cc = max. v out = 2.7v 1 a i ozl (5) output current v cc = max. v out = 0.5v ?1 a (3-s tate o utputs ) v ik clamp diode voltage v cc = min., i in = ?18 ma ?0.7 ?1.2 v i os short circuit current v cc = max. (3) , v out = gnd ?80 ?140 ?200 ma i o output drive current v cc = max. (3) , v out = 2.5v ?50 ?180 ma v h input hysteresis 100 mv maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) 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 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. 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. pins with bus hold are identified in the pin description. 5. this specification does not apply to bi-directional functionalities with bus hold.
pi74fct16541/162541/162h541t 16-bit buffer/line drivers 4 ps2037b 07/09/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct16541t output drive characteristics (over the operating range) 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 = ?3.0 ma 2.5 3.5 v i oh = ?15.0 ma 2.4 3.5 i oh = ?32.0 ma 2.0 3.0 v ol output low voltage v cc = min., v in = v ih or v il i ol = 64 ma 0.2 0.55 v i off power down disable v cc = 0v, v in or v out - 4.5v ? ? 100 a pi74fct162541t/162h541t output drive characteristics (over the operating range) 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 = ?24.0 ma 2.4 3.3 v v ol output low voltage v cc = min., v in = v ih or v il i ol = 24 ma 0.3 0.55 v i odl output low current v cc = 5v, v in = v ih or v il , v out = 1.5v (3) 60 115 150 ma i odh output high current v cc = 5v, v in = v ih or v il , v out = 1.5v (3) ?60 ?115 ?150 ma 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. capacitance (t a = 25c, f = 1 mhz) parameters (4) 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
pi74fct16541/162541/162h541t 16-bit buffer/line drivers 5 ps2037b 07/09/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 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 1.5 ma input @ ttl high i ccd supply current per v cc = max., v in = v cc 60 100 a/ input per mhz (4) 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 0.6 1.5 (5) ma current (6) outputs open v in = gnd f i = 10 mh z 50% duty cycle x oe = gnd one bit toggling v in = 3.4v 0.9 2.3 (5) v in = gnd v cc = max., v in = v cc 2.4 4.5 (5) outputs open v in = gnd f i = 2.5 mh z 50% duty cycle x oe = gnd 16 bits toggling v in = 3.4v 6.4 16.5 (5) v in = gnd notes: 1. for conditions shown as max. or min., use appropriate value specified under electrical characteristics for the applicable dev ice. 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.
pi74fct16541/162541/162h541t 16-bit buffer/line drivers 6 ps2037b 07/09/97 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi74fct16541t switching characteristics over operating range 16541t 16541at 16541ct 16541dt 16541et com. com. com. com. com. parameters description conditions (1) min max min max min max min max min max unit t plh propagation delay c l = 50 pf 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns t phl x a x to x y x 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 1.5 4.4 ns t pzl xoe to xax or xyx t phz output disable time (3) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 3.6 ns t plz xoe to xax or xyx t sk (o) output skew (4) ? 0.5 ? 0.5 ? 0.5 ? 0.5 ? 0.5 ns pi74fct162541t switching characteristics over operating range 162541t 162541at 162541ct 162541dt 162541et com. com. com. com. com. parameters description conditions (1) min max min max min max min max min max unit t plh propagation delay c l = 50 pf 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns t phl x a x to x y x 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 1.5 4.4 ns t pzl xoe to xax or xyx t phz output disable time (3) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 3.6 ns t plz xoe to xax or xyx t sk (o) output skew (4) ? 0.5 ? 0.5 ? 0.5 ? 0.5 ? 0.5 ns pi74fct162h541t switching characteristics over operating range 162h541t 162h541at 162h541ct 162h541dt 162h541et com. com. com. com. com. parameters description conditions (1) min max min max min max min max min max unit t plh propagation delay c l = 50 pf 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns t phl x a x to x y x 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 1.5 4.4 ns t pzl xoe to xax or xyx t phz output disable time (3) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 4.0 ns t plz xoe to xax or xyx t sk (o) output skew (4) ? 0.5 ? 0.5 ? 0.5 ? 0.5 ? 0.5 ns 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. 4. 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
|
