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tm 74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs march 2007 ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs features i cc and i oz reduced by 50% guaranteed simultaneous switching noise level and dynamic threshold performance guaranteed pin-to-pin skew ac performance improved latch-up immunity inverting 3-state outputs drive bus lines or buffer memory address registers outputs source/sink 24ma faster prop delays than the standard act240 general description the acq/actq240 is an inverting octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved pc board density. the acq/actq utilizes fairchild's quiet series technol- ogy to guarantee quiet output switching and improve dynamic threshold performance. fact quiet series features gto output control and undershoot corrector in addition to a split ground bus for superior perfor- mance. ordering information device also available in tape and reel. specify by appending suffix letter ??to the ordering number. connection diagram pin descriptions order number package number package description 74acq240sc m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide 74acq240sj m20d 20-lead small outline package (sop), eiaj type ii, 5.3mm wide 74ACTQ240sc m20b 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide 74ACTQ240sj m20d 20-lead small outline package (sop), eiaj type ii, 5.3mm wide 74ACTQ240qsc mqa20 20-lead quarter size outline package (qsop), jedec mo-137, 0.150" wide pin names description oe 1 , oe 2 3-state output enable inputs i 0 ? 7 inputs o 0 ? 7 outputs fact, quiet series, fact quiet series, and gto are trademarks of fairchild semiconductor corporation.
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 2 logic symbol ieee/iec truth tables h = high voltage level l = low voltage level x = immaterial z = high impedance inputs outputs inputs outputs oe 1 i n pins 12, 14, 16, 18 oe 2 i n pins 3, 5, 7, 9 ll h l l h lh l lh l hx z h x z
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 3 absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. in addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. recommended operating conditions the recommended operating conditions table defines the conditions for actual device operation. recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter rating v cc supply voltage ?.5v to +7.0v i ik dc input diode current v i = ?.5v v i = v cc + 0.5v ?0ma +20ma v i dc input voltage ?.5v to v cc + 0.5v i ok dc output diode current v o = ?.5v v o = v cc + 0.5v ?0ma +20ma v o dc output voltage ?.5v to v cc + 0.5v i o dc output source or sink current ?0ma i cc or i gnd dc v cc or ground current per output pin ?0ma t stg storage temperature ?5? to +150? dc latch-up source or sink current ?00ma t j j unction temperature 140? symbol parameter rating v cc supply voltage acq a ctq 2.0v to 6.0v 4.5v to 5.5v v i input voltage 0v to v cc v o output voltage 0v to v cc t a operating temperature ?0? to +85? ? v / ? t minimum input edge rate, acq devices: v in from 30% to 70% of v cc , v cc @ 3.0v, 4.5v, 5.5v 125mv/ns ? v / ? t minimum input edge rate, actq devices: v in from 0.8v to 2.0v, v cc @ 4.5v, 5.5v 125mv/ns
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 4 dc electrical characteristics for acq notes: 1. all outputs loaded; thresholds on input associated with output under test. 2. maximum test duration 2.0ms, one output loaded at a time. 3. i in and i cc @ 3.0v are guaranteed to be less than or equal to the respective limit @ 5.5v v cc . 4. max number of outputs defined as (n). data inputs are driven 0v to 5v. one output @ gnd. 5. max number of data inputs (n) switching. (n ?) inputs switching 0v to 5v (acq). input-under-test switching: 5v to threshold (v ild ), 0v to threshold (v ihd ), f = 1mhz. symbol parameter v cc (v) conditions t a = +25? t a = ?0? to +85? units t yp. guaranteed limits v ih minimum high level input voltage 3.0 v out = 0.1v or v cc ?0.1v 1.5 2.1 2.1 v 4.5 2.25 3.15 3.15 5.5 2.75 3.85 3.85 v il maximum low level input voltage 3.0 v out = 0.1v or v cc ?0.1v 1.5 0.9 0.9 v 4.5 2.25 1.35 1.35 5.5 2.75 1.65 1.65 v oh minimum high level output voltage 3.0 i out = ?0? 2.99 2.9 2.9 v 4.5 4.49 4.4 4.4 5.5 5.49 5.4 5.4 v in = v il or v ih : 3.0 i oh = ?2ma 2.56 2.46 4.5 i oh = ?4ma 3.86 3.76 5.5 i oh = ?4ma (1) 4.86 4.76 v ol maximum low level output voltage 3.0 0.002 0.1 0.1 v 4.5 i out = 50? 0.001 0.1 0.1 5.5 0.001 0.1 0.1 v in = v il or v ih : 3.0 i ol = 12ma 0.36 0.44 4.5 i ol = 24ma 0.36 0.44 5.5 i ol = 24ma (1) 0.36 0.44 i in (3) maximum input leakage current 5.5 v i = v cc , gnd ?.1 ?.0 ? i old minimum dynamic 5.5 v old = 1.65v max. 75 ma i ohd output current (2) 5.5 v ohd = 3.85v min. ?5 ma i cc (3) maximum quiescent supply current 5.5 v in = v cc or gnd 4.0 40.0 ? i oz maximum 3-state leakage current 5.5 v i (oe) = v il , v ih ; v i = v cc , gnd; v o = v cc , gnd ?.25 ?.5 ? v olp quiet output maximum dynamic v ol 5.0 figures 1 & 2 (4) 1.1 1.5 v v olv quiet output minimum dynamic v ol 5.0 figures 1 & 2 (4) ?.6 ?.2 v v ihd minimum high level dynamic input voltage 5.0 (5) 3.1 3.5 v v ild maximum low level dynamic input voltage 5.0 (5) 1.9 1.5 v
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 5 dc electrical characteristics for actq notes: 6. all outputs loaded; thresholds on input associated with output under test. 7. maximum test duration 2.0ms, one output loaded at a time. 8. max number of data inputs defined as (n). n? data inputs are driven 0v to 3v. one data input @ v in = gnd. 9. max number of data inputs (n) switching. (n?) inputs switching 0v to 3v (actq). input-under-test switching: 3v to threshold (v ild ), 0v to threshold (v ihd ), f = 1 mhz. symbol parameter v cc (v) conditions t a = +25? t a = ?0? to +85? units t yp. guaranteed limits v ih minimum high level input voltage 4.5 v out = 0.1v or v cc ?0.1v 1.5 2.0 2.0 v 5.5 1.5 2.0 2.0 v il maximum low level input voltage 4.5 v out = 0.1v or v cc ?0.1v 1.5 0.8 0.8 v 5.5 1.5 0.8 0.8 v oh minimum high level output voltage 4.5 i out = ?0? 4.49 4.4 4.4 v 5.5 5.49 5.4 5.4 v in = v il or v ih : 4.5 i oh = ?4ma 3.86 3.76 5.5 i oh = ?4ma (6) 4.86 4.76 v ol maximum low level output voltage 4.5 i out = 50? 0.001 0.1 0.1 v 5.5 0.001 0.1 0.1 v in = v il or v ih : 4.5 i ol = 24ma 0.36 0.44 5.5 i ol = 24ma (6) 0.36 0.44 i in maximum input leakage current 5.5 v i = v cc , gnd ?.1 ?.0 ? i oz maximum 3-state leakage current 5.5 v i = v il , v ih ; v o = v cc , gnd ?.25 ?.5 ? i cct maximum i cc /input 5.5 v i = v cc ?2.1v 0.6 1.5 ma i old minimum dynamic 5.5 v old = 1.65v max. 75 ma i ohd output current (7) 5.5 v ohd = 3.85v min. ?5 ma i cc maximum quiescent supply current 5.5 v in = v cc or gnd 4.0 40.0 ? v olp quiet output maximum dynamic v ol 5.0 figures 1 & 2 (8) 1.1 1.5 v v olv quiet output minimum dynamic v ol 5.0 figures 1 & 2 (8) ?.6 ?.2 v v ihd minimum high level dynamic input voltage 5.0 (9) 1.9 2.2 v v ild maximum low level dynamic input voltage 5.0 (9) 1.2 0.8 v
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 6 ac electrical characteristics for acq notes: 10. voltage range 5.0 is 5.0v ?0.5v. voltage range 3.3 is 3.3 ?0.3v. 11. skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. the specification applies to any outputs switching in the same direction, either high-to-low (t oshl ) or low-to-high (t oslh ). parameter guaranteed by design. ac electrical characteristics for actq notes: 12. voltage range 5.0 is 5.0v ?0.5v 13. skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. the specification applies to any outputs switching in the same direction, either high-to-low (t oshl ) or low-to-high (t oslh ). parameter guaranteed by design. capacitance symbol parameter v cc (v) (10) t a = +25?, c l = 50pf t a = ?0? to +85?, c l = 50pf units min. typ. max. min. max. t phl propagation delay, data to output 3.3 2.0 7.0 10.0 2.0 10.5 ns t plh 5.0 1.5 5.0 6.5 1.5 7.0 t pzl output enable time 3.3 2.5 8.0 12.0 2.5 12.5 ns t pzh 5.0 1.5 5.5 8.0 1.5 8.5 t phz output disable time 3.3 1.0 8.5 13.5 1.0 14.0 ns t plz 5.0 1.0 6.0 9.0 1.0 9.5 t oshl output to output skew, data to output (11) 3.3 1.0 1.5 1.5 ns t oslh 5.0 0.5 1.0 1.0 symbol parameter v cc (v) (12) t a = +25?, c l = 50pf t a = ?0? to +85?, c l = 50pf units min. typ. max. min. max. t phl propagation delay, data to output 5.0 1.5 5.5 7.0 1.5 7.5 ns t plh t pzl , t pzh output enable time 5.0 1.5 6.5 8.5 1.5 9.0 ns t phz , t plz output disable time 5.0 1.0 7.0 9.5 1.0 10.0 ns t oshl output to output skew, data to output (13) 5.0 0.5 1.0 1.0 ns t oslh symbol parameter conditions typ. units c in input capacitance v cc = open 4.5 pf c pd po w er dissipation capacitance v cc = 5.0v 70 pf
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 7 fa ct noise characteristics the setup of a noise characteristics measurement is crit- ical to the accuracy and repeatability of the tests. the following is a brief description of the setup used to mea- sure the noise characteristics of fact. equipment: hewlett packard model 8180a word generator pc-163a test fixture tektronics model 7854 oscilloscope procedure: 1. verify test fixture loading: standard load 50pf, 500 ? . 2. deskew the hfs generator so that no two channels have greater than 150 ps skew between them. this requires that the oscilloscope be deskewed first. it is important to deskew the hfs generator channels before testing. this will ensure that the outputs switch simultaneously. 3. terminate all inputs and outputs to ensure proper loading of the outputs and that the input levels are at the correct voltage. 4. set the hfs generator to toggle all but one output at a frequency of 1mhz. greater frequencies will increase dut heating and affect the results of the measurement. 5. set the hfs generator input levels at 0v low and 3v high for act devices and 0v low and 5v high for ac devices. verify levels with an oscilloscope. notes: 14. v ohv and v olp are measured with respect to ground reference. 15. input pulses have the following characteristics: f = 1mhz, t r = 3ns, t f = 3ns, skew < 150ps. figure 1. quiet output noise voltage waveforms v olp /v olv and v ohp /v ohv : determine the quiet output pin that demonstrates the greatest noise levels. the worst case pin will usually be the furthest from the ground pin. monitor the output voltages using a 50 ? coaxial cable plugged into a standard smb type connector on the test fixture. do not use an active fet probe. measure v olp and v olv on the quiet output during the worst case transition for active and enable. measure v ohp and v ohv on the quiet output during the worst case active and enable transition. verify that the gnd reference recorded on the oscilloscope has not drifted to ensure the accuracy and repeatability of the measurements. v ild and v ihd : monitor one of the switching outputs using a 50 ? coaxial cable plugged into a standard smb type connector on the test fixture. do not use an active fet probe. first increase the input low voltage level, v il , until the output begins to oscillate or steps out a min of 2ns. oscillation is defined as noise on the output low level that exceeds v il limits, or on output high levels that exceed v ih limits. the input low voltage level at which oscillation occurs is defined as v ild . next decrease the input high voltage level, v ih , until the output begins to oscillate or steps out a min of 2ns. oscillation is defined as noise on the output low level that exceeds v il limits, or on output high levels that exceed v ih limits. the input high voltage level at which oscillation occurs is defined as v ihd . verify that the gnd reference recorded on the oscilloscope has not drifted to ensure the accuracy and repeatability of the measurements. figure 2. simultaneous switching test circuit
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 8 physical dimensions dimensions are in inches (millimeters) unless otherwise noted. figure 3. 20-lead small outline integrated circuit (soic), jedec ms-013, 0.300" wide pa ck ag e number m20b
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 9 physical dimensions (continued) dimensions are in millimeters unless otherwise noted. figure 4. 20-lead small outline package (sop), eiaj type ii, 5.3mm wide pa ck ag e number m20d
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 10 physical dimensions (continued) dimensions are in millimeters unless otherwise noted. figure 5. 20-lead quarter size outline package (qsop), jedec mo-137, 0.150" wide pa ck ag e number mqa20
74acq240, 74ACTQ240 quiet series octal buffer/line driver with 3-state outputs ?989 fairchild semiconductor corporation www.fairchildsemi.com 74acq240, 74ACTQ240 rev. 1.6 11 tradem a rks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intend ed to be an exhaustive list of all such trademarks. acex across the board. around the world. activearray bottomless build it now coolfet crossvolt ctl current transfer logic dome e 2 cmos ecospark ensigna fact quiet series fact fast fastr fps frfet globaloptoisolator gto hisec i-lo implieddisconnect intellimax isoplanar microcoupler micropak microwire msx msxpro ocx ocxpro optologic optoplanar pacman pop power220 power247 poweredge powersaver powertrench programmable active droop qfet qs qt optoelectronics quiet series rapidconfigure rapidconnect scalarpump smart start spm stealth superfet supersot -3 supersot -6 supersot -8 syncfet tcm the power franchise tinyboost tinybuck tinylogic tinyopto tinypower tinywire trutranslation p serdes uhc unifet vcx wire disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. these specifications do not expand the terms of fairchild? worldwide terms and conditions, specifically the warranty therein, which covers these products. life support policy fairchild? products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems wh ich, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform w hen properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information formative or in design this datasheet contains the design specifications for product development. specifications may change in any manner without notice. preliminary first production this datasheet contains preliminary data; supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice to improve design. no identification needed full production this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice to improve design. obsolete not in production this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. re v. i24

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