mc74vhc126 quad bus buffer with 3state control inputs the mc74vhc126 is a high speed cmos quad bus buffer fabricated with silicon gate cmos technology. it achieves noninverting high speed operation similar to equivalent bipolar schottky ttl while maintaining cmos low power dissipation. the mc74vhc126 requires the 3state control input (oe) to be set low to place the output into high impedance. the internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. the inputs tolerate voltages up to 7.0 v, allowing the interface of 5.0 v systems to 3.0 v systems. ? high speed: t pd = 3.8 ns (typ) at v cc = 5.0 v ? low power dissipation: i cc = 4.0 m a (max) at t a = 25 c ? high noise immunity: v nih = v nil = 28% v cc ? power down protection provided on inputs ? balanced propagation delays ? designed for 2.0 v to 5.5 v operating range ? low noise: v olp = 0.8 v (max) ? pin and function compatible with other standard logic families ? latchup performance exceeds 300 ma ? esd performance: hbm > 2000 v; machine model > 200 v ? chip complexity: 72 fets or 18 equivalent gates activehigh output enables function table vhc126 inputs output aoe y hh h lh l xl z y1 y2 y4 3 6 8 11 13 12 10 9 4 5 1 2 a1 oe1 a2 oe2 a3 oe3 a4 oe4 y3 figure 1. logic diagram ? semiconductor components industries, llc, 2002 june, 2002 rev. 3 1 publication order number: mc74vhc126/d 14lead soic d suffix case 751a 14lead tssop dt suffix case 948g pin connections device package shipping ordering information mc74vhc126d soic 55 units/rail mc74vhc126dt tssop 96 units/rail 14lead soic eiaj m suffix case 965 mc74vhc126m soic eiaj 50 units/rail 11 12 13 14 8 9 10 5 4 3 2 1 7 6 oe3 y4 a4 oe4 v cc y3 a3 oe2 y1 a1 oe1 gnd y2 a2 http://onsemi.com see general marking information in the device marking section on page 6 of this data sheet. device marking information (top view)
mc74vhc126 http://onsemi.com 2 ????????????????????????????????? ????????????????????????????????? maximum ratings (note 1) ????? ????? symbol ???????????????????? ???????????????????? parameter ??????? ??????? value ???? ???? unit ????? ????? v cc ???????????????????? ???????????????????? dc supply voltage ??????? ??????? 0.5 to +7.0 ???? ???? v ????? ????? v in ???????????????????? ???????????????????? dc input voltage ??????? ??????? 0.5 to +7.0 ???? ???? v ????? ????? v out ???????????????????? ???????????????????? dc output voltage ??????? ??????? 0.5 to v cc + 0.5 ???? ???? v ????? ????? i ik ???????????????????? ???????????????????? input diode current ??????? ??????? 20 ???? ???? ma ????? ????? i ok ???????????????????? ???????????????????? output diode current ??????? ??????? 20 ???? ???? ma ????? ????? i out ???????????????????? ???????????????????? dc output current, per pin ??????? ??????? 25 ???? ???? ma ????? ????? i cc ???????????????????? ???????????????????? dc supply current, v cc and gnd pins ??????? ??????? 50 ???? ???? ma ????? ? ??? ? ????? p d ???????????????????? ? ?????????????????? ? ???????????????????? power dissipation in still air (note 2) soic packages tssop package ??????? ? ????? ? ??????? 500 450 ???? ? ?? ? ???? mw ????? ????? t stg ???????????????????? ???????????????????? storage temperature ??????? ??????? 65 to +150 ???? ???? c 1. maximum ratings are those values beyond which damage to the device may occur. exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. functional operation under absolute maximumrated conditions is not implied. functional operation should be restricted to the recommended operating conditions. 2. derating soic packages: 7.0 mw/ c from 65 to 125 c tssop package: 6.1 mw/ c from 65 to 125 c recommended operating conditions ????? ????? symbol ????????????????????? ????????????????????? parameter ???? ???? min ???? ???? max ??? ??? unit ????? ????? v cc ????????????????????? ????????????????????? dc supply voltage ???? ???? 2.0 ???? ???? 5.5 ??? ??? v ????? ????? v in ????????????????????? ????????????????????? dc input voltage ???? ???? 0 ???? ???? 5.5 ??? ??? v ????? ????? v out ????????????????????? ????????????????????? dc output voltage ???? ???? 0 ???? ???? v cc ??? ??? v ????? ????? t a ????????????????????? ????????????????????? operating temperature, all package types ???? ???? 55 ???? ???? +125 ??? ??? c ????? ? ??? ? ????? t r , t f ????????????????????? ? ??????????????????? ? ????????????????????? input rise and fall time v cc = 3.3 v 0.3 v v cc = 5.0 v 0.5 v ???? ? ?? ? ???? 0 0 ???? ? ?? ? ???? 100 20 ??? ? ? ? ??? ns/v
mc74vhc126 http://onsemi.com 3 dc electrical characteristics v cc t a = 25 c t a 85 c t a 125 c symbol parameter test conditions (v) min typ max min max min max unit v ih minimum highlevel input voltage 2.0 3.0 4.5 5.5 1.5 2.1 3.15 3.85 1.5 2.1 3.15 3.85 1.5 2.1 3.15 3.85 v v il maximum lowlevel input voltage 2.0 3.0 4.5 5.5 0.5 0.9 1.35 1.65 0.5 0.9 1.35 1.65 0.5 0.9 1.35 1.65 v v oh minimum highlevel output voltage v in = v ih or v il v in = v ih or v il i oh = 50 m a 2.0 3.0 4.5 1.9 2.9 4.4 2.0 3.0 4.5 1.9 2.9 4.4 1.9 2.9 4.4 v in ih il v in = v ih or v il i oh = 4.0 ma i oh = 8.0 ma 3.0 4.5 2.58 3.94 2.48 3.80 2.34 3.66 v v ol maximum lowlevel output voltage v in = v ih or v il v in = v ih or v il i ol = 50 m a 2.0 3.0 4.5 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 v in ih il v in = v ih or v il i ol = 4.0 ma i ol = 8.0 ma 3.0 4.5 0.36 0.36 0.44 0.44 0.52 0.52 v i oz maximum 3state leakage current v in = v ih or v il v out = v cc or gnd 5.5 0.25 2.5 2.5 m a i in maximum input leakage current v in = 5.5 v or gnd 0 to 5.5 0.1 1.0 1.0 m a i cc maximum quiescent supply current v in = v cc or gnd 5.5 4.0 40 40 m a
mc74vhc126 http://onsemi.com 4 ????????????????????????????????? ????????????????????????????????? ac electrical characteristics (input t r = t f = 3.0 ns) ???? ???? ??????? ??????? ????????? ????????? ??????? ??????? t a = 25 c ????? ????? t a = 85 c ????? ????? t a = 125 c ?? ?? ???? ???? symbol ??????? ??????? parameter ????????? ????????? test conditions ??? ??? min ??? ??? typ ??? ??? max ??? ??? min ??? ??? max ??? ??? min ??? ??? max ?? ?? unit ???? ? ?? ? ???? t plh , t phl ??????? ? ????? ? ??????? maximum propagation delay, atoy ????????? ? ??????? ? ????????? v cc = 3.3 0.3 v c l = 15 pf c l = 50 pf ??? ? ? ? ??? ??? ? ? ? ??? 5.6 8.1 ??? ? ? ? ??? 8.0 11.5 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 9.5 13.0 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 12.0 15.0 ?? ?? ?? ns ???? ???? ??????? ??????? a to y ????????? ????????? v cc = 5.0 0.5 v c l = 15 pf c l = 50 pf ??? ??? ??? ??? 3.8 5.3 ??? ??? 5.5 7.5 ??? ??? 1.0 1.0 ??? ??? 6.5 8.5 ??? ??? 1.0 1.0 ??? ??? 8.5 10.5 ?? ?? ???? ? ?? ? ???? t pzl , t pzh ??????? ? ????? ? ??????? maximum output enable time, oe to y ????????? ? ??????? ? ????????? v cc = 3.3 0.3 v c l = 15 pf r l = 1.0 k w c l = 50 pf ??? ? ? ? ??? ??? ? ? ? ??? 5.4 7.9 ??? ? ? ? ??? 8.0 11.5 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 9.5 13.0 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 11.5 15.0 ?? ?? ?? ns ???? ? ?? ? ???? ??????? ? ????? ? ??????? oe to y ????????? ? ??????? ? ????????? v cc = 5.0 0.5 v c l = 15 pf r l = 1.0 k w c l = 50 pf ??? ? ? ? ??? ??? ? ? ? ??? 3.6 5.1 ??? ? ? ? ??? 5.1 7.1 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 6.0 8.0 ??? ? ? ? ??? 1.0 1.0 ??? ? ? ? ??? 7.5 9.5 ?? ?? ?? ???? ???? t plz , t phz ??????? ??????? maximum output disable time, oe to y ????????? ????????? v cc = 3.3 0.3 v c l = 50 pf r l = 1.0 k w ??? ??? ??? ??? 9.5 ??? ??? 13.2 ??? ??? 1.0 ??? ??? 15.0 ??? ??? 1.0 ??? ??? 18.0 ?? ?? ns ???? ? ?? ? ???? ??????? ? ????? ? ??????? oe to y ????????? ? ??????? ? ????????? v cc = 5.0 0.5 v c l = 50 pf r l = 1.0 k w ??? ? ? ? ??? ??? ? ? ? ??? 6.1 ??? ? ? ? ??? 8.8 ??? ? ? ? ??? 1.0 ??? ? ? ? ??? 10.0 ??? ? ? ? ??? 1.0 ??? ? ? ? ??? 12.0 ?? ?? ?? ???? ? ?? ? ???? t oslh , t oshl ??????? ? ????? ? ??????? outputtooutput skew ????????? ? ??????? ? ????????? v cc = 3.3 0.3 v c l = 50 pf (note 3) ??? ? ? ? ??? ??? ? ? ? ??? ??? ? ? ? ??? 1.5 ??? ? ? ? ??? ??? ? ? ? ??? 1.5 ??? ? ? ? ??? ??? ? ? ? ??? 1.5 ?? ?? ?? ns ???? ???? ??????? ??????? ????????? ????????? v cc = 5.0 0.5 v c l = 50 pf (note 3) ??? ??? ??? ??? ??? ??? 1.0 ??? ??? ??? ??? 1.0 ??? ??? ??? ??? 1.0 ?? ?? ???? ? ?? ? ???? c in ??????? ? ????? ? ??????? maximum input capacitance ????????? ? ??????? ? ????????? ??? ? ? ? ??? ??? ? ? ? ??? 4.0 ??? ? ? ? ??? 10 ??? ? ? ? ??? ??? ? ? ? ??? 10 ??? ? ? ? ??? ??? ? ? ? ??? 10 ?? ?? ?? pf ???? ? ?? ? ? ?? ? ???? c out ??????? ? ????? ? ? ????? ? ??????? maximum threestate output capacitance (output in high impedance state) ????????? ? ??????? ? ? ??????? ? ????????? ??? ? ? ? ? ? ? ??? ??? ? ? ? ? ? ? ??? 6.0 ??? ? ? ? ? ? ? ??? ??? ? ? ? ? ? ? ??? ??? ? ? ? ? ? ? ??? ??? ? ? ? ? ? ? ??? ??? ? ? ? ? ? ? ??? ?? ?? ?? ?? pf typical @ 25 c, v cc = 5.0v c pd power dissipation capacitance (note 4) 15 pf 3. parameter guaranteed by design. t oslh = |t plhm t plhn |, t oshl = |t phlm t phln |. 4. c pd is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption with out load. average operating current can be obtained by the equation: i cc(opr ) = c pd v cc f in + i cc /4 (per buffer). c pd is used to determine the noload dynamic power consumption; p d = c pd v cc 2 f in + i cc v cc . noise characteristics (input t r = t f = 3.0 ns, c l = 50 pf, v cc = 5.0 v) t a = 25 c symbol characteristic typ max unit v olp quiet output maximum dynamic v ol 0.3 0.8 v v olv quiet output minimum dynamic v ol 0.3 0.8 v v ihd minimum high level dynamic input voltage 3.5 v v ild maximum low level dynamic input voltage 1.5 v
mc74vhc126 http://onsemi.com 5 switching waveforms figure 2. figure 3. y 50% 50% v cc 50% v cc v cc gnd high impedance v ol + 0.3v v oh - 0.3v y y oe t pzl t plz t pzh t phz *includes all probe and jig capacitance c l * test point device under test output figure 4. test circuit *includes all probe and jig capacitance figure 5. test circuit output test point c l * 1 k w connect to v cc when testing t plz and t pzl. connect to gnd when testing t phz and t pzh. device under test high impedance 50% 50% v cc v cc gnd t plh t phl a figure 6. input equivalent circuit input
mc74vhc126 http://onsemi.com 6 marking diagrams 14lead soic d suffix case 751a 14lead tssop dt suffix case 948g 13 14 12 11 10 9 8 2 1 34567 13 14 12 11 10 9 8 2 1 34567 14lead soic eiaj m suffix case 965 13 14 12 11 10 9 8 2 1 34567 vhc126 vhc awlyww* 126 alyw* *see applications note #and8004/d for date code and traceability information. vhc126 awlyww*
mc74vhc126 http://onsemi.com 7 package dimensions case 751a03 issue f soic14 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. a b g p 7 pl 14 8 7 1 m 0.25 (0.010) b m s b m 0.25 (0.010) a s t t f r x 45 seating plane d 14 pl k c j m dim min max min max inches millimeters a 8.55 8.75 0.337 0.344 b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.054 0.068 d 0.35 0.49 0.014 0.019 f 0.40 1.25 0.016 0.049 g 1.27 bsc 0.050 bsc j 0.19 0.25 0.008 0.009 k 0.10 0.25 0.004 0.009 m 0 7 0 7 p 5.80 6.20 0.228 0.244 r 0.25 0.50 0.010 0.019 d suffix case 948g01 issue o tssop dim min max min max inches millimeters a 4.90 5.10 0.193 0.200 b 4.30 4.50 0.169 0.177 c --- 1.20 --- 0.047 d 0.05 0.15 0.002 0.006 f 0.50 0.75 0.020 0.030 g 0.65 bsc 0.026 bsc h 0.50 0.60 0.020 0.024 j 0.09 0.20 0.004 0.008 j1 0.09 0.16 0.004 0.006 k 0.19 0.30 0.007 0.012 k1 0.19 0.25 0.007 0.010 l 6.40 bsc 0.252 bsc m 0 8 0 8 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a does not include mold flash, protrusions or gate burrs. mold flash or gate burrs shall not exceed 0.15 (0.006) per side. 4. dimension b does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 (0.010) per side. 5. dimension k does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the k dimension at maximum material condition. 6. terminal numbers are shown for reference only. 7. dimension a and b are to be determined at datum plane -w-. s u 0.15 (0.006) t 2x l/2 s u m 0.10 (0.004) v s t l u seating plane 0.10 (0.004) t ??? ??? ??? section nn detail e j j1 k k1 detail e f m w 0.25 (0.010) 8 14 7 1 pin 1 ident. h g a d c b s u 0.15 (0.006) t v 14x ref k n n dt suffix
mc74vhc126 http://onsemi.com 8 package dimensions case 96501 issue o so14 h e a 1 dim min max min max inches --- 2.05 --- 0.081 millimeters 0.05 0.20 0.002 0.008 0.35 0.50 0.014 0.020 0.18 0.27 0.007 0.011 9.90 10.50 0.390 0.413 5.10 5.45 0.201 0.215 1.27 bsc 0.050 bsc 7.40 8.20 0.291 0.323 0.50 0.85 0.020 0.033 1.10 1.50 0.043 0.059 0 0.70 0.90 0.028 0.035 --- 1.42 --- 0.056 a 1 h e q 1 l e 10 0 10 l e q 1 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimensions d and e do not include mold flash or protrusions and are measured at the parting line. mold flash or protrusions shall not exceed 0.15 (0.006) per side. 4. terminal numbers are shown for reference only. 5. the lead width dimension (b) does not include dambar protrusion. allowable dambar protrusion shall be 0.08 (0.003) total in excess of the lead width dimension at maximum material condition. dambar cannot be located on the lower radius or the foot. minimum space between protrusions and adjacent lead to be 0.46 ( 0.018). 0.13 (0.005) m 0.10 (0.004) d z e 1 14 8 7 e a b view p c l detail p m a b c d e e 0.50 m z m suffix on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indem nify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and re asonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized u se, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employ er. publication ordering information japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. mc74vhc126/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 8002829855 toll free usa/canada
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