1 http://www.elm-tech.com r ev.1. 0 high speed cmos logic ic elm7sh126x a g e neral description f eatures applica tion selection guide elm7sh 1 2 6 x a el symbol a function 1 2 6 : bus buffer b package m : sot - 25 t : sc - 70- 5(sot-353) c product version a d taping d irection el : ref er to pkg file maximum a bsolute ratings parameter symbol limit unit power supply voltage vdd - 0.5 to + 6 .0 v input voltage vin - 0.5 to + 6 .0 v output voltage vout - 0.5 to vdd + 0.5 v input protection diode current iik - 20 ma output parasitic diode current iok 20 ma output current iout 25 ma v dd /gnd current i dd , ig nd 50 ma power dissipation pd 150 mw storage temperature tstg - 65 to + 150 c ELM7SH126XA is bus buffer with 3-state output , which is suitable for battery-operated devices because of its low voltage and ultra high speed operation. the low power consumption contributes to longer battery life, which allows long time operation of devices. the internal circuit which provides high noise immunity and stable output is composed of 3 stages, including buffered output. ? cell phones ? digital cameras ? portable electrical appliances like pda, etc. ? computers and peripherals ? digital electrical appliances like lcd tv sets, dvd recorders/players, stb, etc. ? modification inside print board, adjustment of timing, solution to noise ? power voltage change from 5v to 3v elm7sh 126 x a el a b c d 4 - ? same electrical characteristic and high speed operation as 74vhc series ? low consumption current : idd=1.0 a(max.)(top=25 c ) ? wide power voltage range : 2.0v to 5.5v ? wide input voltage range : vih=5.5v (max.)(vdd=0 to 5.5v) ? high speed : tpd=3.8ns(typ.)(vdd=5.0v) ? small p ackage : sot - 25, sc - 70- 5(sot-353) ? same function and pin configuration as elm7sxxb
2 http://www.elm-tech.com r ev.1. 0 pin no. pin name 1 oe 2 iny 3 gnd 4 outx 5 v dd input output oe iny outx high high high high low low low high hi -z low low hi -z high speed cmos logic ic elm7sh126x a pin configuration top view dc e l ectrical characteristics s uggested operating condition parameter symbol limit unit power voltage vdd 2. 0 to 5.5 v input voltage vin 0 to 5.5 v output voltage vout 0 to vdd v operating temperature top - 40 to + 85 c high - input down -time tr , tf vdd=3.3 0.3v 0 to 2 00 ns vdd=5.0 0.5v 0 to 10 0 4 - 1 2 3 5 4 parameter sym. v dd top=25 c top=-40 to + 85 c unit condition min. typ. max. min. max. input voltage vih 2.0 1.50 1.50 v 3.0 2.10 2.10 5.5 3.85 3.85 vil 2.0 0.50 0.50 v 3.0 0.90 0.90 5.5 1.65 1.65 output voltage voh 2.0 1.90 2.00 1.90 v vin =vih ioh= - 50 a 3.0 2.90 3.00 2.90 4.5 4.40 4.50 4.40 3.0 2.58 2.48 ioh = - 4 ma 4.5 3.94 3.80 ioh = - 8 ma vol 2.0 0.10 0.10 v vin= vih or vil iol = 5 0 a 3.0 0.10 0.10 4.5 0.10 0.10 3.0 0.36 0.44 iol = 4 ma 4.5 0.36 0.44 iol = 8 ma 3-state output off-state current loz 5.5 0. 25 2.5 a vin =vih or vil vout=vdd or gnd input current iin 0 to 5.5 0.1 1.0 a vin=5.5v or gnd static current idd 5.5 1 .0 1 0.0 a vin=vdd or gnd truth table
3 http://www.elm-tech.com r ev.1. 0 a c e l ectrical characteristics 4 - if not specified , input : tr = tf =3ns parameter sym. v dd (v) cl (pf) top=25 c t op=-40 to + 85 c unit condi . min. typ. max. min. max. propagation delay-time tplh 3.3 0.3 15.0 5.6 8.0 1.0 9 .5 ns tphl 5.6 8.0 1.0 9.5 tplh 3.3 0.3 50.0 8.1 11.5 1.0 13.0 tphl 8.1 11 .5 1.0 13.0 tplh 5. 0 0.5 15.0 3.8 5.5 1.0 6.5 tphl 3.8 5.5 1.0 6.5 tplh 5. 0 0.5 50.0 5.3 7.5 1.0 8.5 tphl 5.3 7.5 1.0 8.5 o utput enable time tpzh 3.3 0.3 15.0 5.4 8.0 1.0 9 .5 ns tpzl 5.4 8.0 1.0 9.5 tpzh 3.3 0.3 50.0 7.9 11.5 1.0 13.0 tpzl 7.9 11.5 1.0 13.0 tpzh 5. 0 0.5 15.0 3.6 5.1 1.0 6.0 tpzl 3.6 5.1 1.0 6.0 tpzh 5. 0 0.5 50.0 5.1 7.1 1.0 8.0 tpzl 5.1 7.1 1.0 8.0 output disable time tplz 3.3 0.3 15.0 7.0 9.7 1.0 11.5 ns tphz 7.0 9.7 1.0 11.5 tplz 3.3 0.3 50.0 9.5 13.2 1.0 15.0 tphz 9.5 13.2 1.0 15.0 tplz 5. 0 0.5 15.0 4.6 6.8 1.0 8.0 tphz 4.6 6.8 1.0 8.0 tplz 5. 0 0.5 50.0 6.1 8.8 1.0 10.0 tphz 6.1 8.8 1.0 10.0 input capacity cin 4 10 10 pf output capacity cout 6 pf equivalent inner capacity cpd 14 pf * marking sot - 25 no. mark content a f elm7sh series b c ELM7SH126XA c a to z ( except i, o, x ) lot no. s c-70 - 5 high speed cmos logic ic elm7sh126x a * cpd is ic's inner equivalent capacity which is calculated from non-loaded operating current consumption referred to test circuit. averaged operating current consumption at non load is cal culated as following formula: idd (opr) = cpd ? vdd ? fin +idd b c a
4 http://www.elm-tech.com r ev.1. 0 * o utput should be ope ned when measuring current consumption. test c ircuit : tplh/tphl measured wave pattern : tplh/tphl test c ircuit : tplz/tpzl measured wave pattern : tplz/tpzl test c ircuit : tphz/tpzh measured wave pattern : tphz/tpzh high speed cmos logic ic elm7sh126x a 4 - * o utput should be ope ned when measuring current consumption. * o utput should be ope ned when measuring current consumption. p u l s e o s c i l l a t o r i n p u t o u t p u t v d d c l ? 50 v d d 5 0 % i n p u t o u t p u t 5 0 % 3 n s g n d 9 0 % 1 0 % 9 0 % 3 n s 1 0 % 5 0 % t p l h v o h v o l t p hl 5 0 % v d d p u l s e o s c i l l a t o r v d d i n p u t v d d c l o u t p u t ? 5 0 ? 1 k 5 0 % i n p u t 5 0 % 3 n s v d d g n d 9 0 % 1 0 % 9 0 % 3 n s 1 0 % t p l z v d d v o l t p z l 5 0 % v o l + 0 . 3 v p u l s e o s c i l l a t o r v d d i n p u t c l v d d o u t p u t ? 5 0 ? 1 k 5 0 % i n p u t 5 0 % 3 n s v d d g n d 9 0 % 1 0 % 9 0 % 3 n s 1 0 % t p h z v o h - 0 . 3 v v o h g n d 5 0 % t p z h
|
