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| Datasheet File OCR Text: |
| ba8274 / f |???| ic 1/8 i 2 c ?????? ic ba8274 / f ba8274, BA8274F ? i 2 c ????`?L???? xL? ??? ic ??`??????????`?? ?p?????L?????? ! ! ! ! ? ? ? ? ?????? cd tv ``? ! ! ! ! L L L L 1) ???? 2) i 2 c Q 3) 1 : 10 ?`??Q 4) ?????R???O?? 5) ??R?? ! ! ! ! ~?? ~?? ~?? ~?? (ta=25 ) parameter symbol limits unit ?o ?y v ?0 ? pd mw ?^9 s
c? topr c - 9 s
c? tstg c ? ta = 25 c ? p?;b? ?xz 1 c tmv 5.5mw(sop), 8.0mw (dip) ?na?{ v cc 13.0 800 / 550 ?? ? 40~ + 85 ? 55~ + 125 ! ! ! ! ?X ?X ?X ?X (ta=25 ) parameter symbol min. typ. max. unit ?o ?y 4.5 ? 12 v v cc ? i 2 c x????tw j? ?
apb{
ba8274 / f |???| ic 2/8 ! ! ! ! ?? ?? ?? ?? 8765 1234 v cc l y s y n.c. buffer buffer n.c. l x s x gnd ! ! ! ! h h h h v cc gnd 35.7 v cc gnd 35.7 pin no. pin name sas? z? ? ???w z? z?pb{ ???w ?? z?pb{ 2 7 3 6 l x l y s x s y ???? z?pb{ ? 4 gnd ? ?o z?pb{ 8v cc ba8274 / f |???| ic 3/8 ! ! ! ! ?? ?? ?? ?? ( ???? ta = 2 5 , v cc =5v) parameter symbol min. typ. max. unit conditions s? ?v 1 i q1 ? 16 30 ma s? ?v 2 i q2 ? 17 30 ma s? ?v 3 i q3 ? 30 40 ma i sx, i sy both buffered outputs sinking 30ma. i lx, i ly ma ? ? ?v 1 i sx, i sy 2.0 2.7 ? i lx, i ly ma ? ? ?v 2 20 27 ? ?? ?v 1 ? 2.8 3.5 ma ?? ?v 2 ? 3.0 3.3 ma ??? ?v i lx, i ly ?? 200 a ? z???e??? z z in / z out 81013 ? v cc =12v both i 2 c inputs low, v lx , v ly low on buffered bus=0.3v. v lx , v ly =v cc and v sx , v sy =v cc . i lx , i ly sink on buffered bus=30ma. i sx , i sy low=0.4v v sx , v sy low on i 2 c bus=0.3v. i sx , i sy low on i 2 c bus=3ma. i lx , i sy low=0.4v ! ! ! ! y y y y 8765 1234 v cc l y s y n.c. n.c. v cc c2 sw3 sw4 01 2 3 d2 150 e3 i3 n.c. l x s x gnd i4 v b2 v n.c. 0 v cc f a v cc 3 150 1 e4 2 a2 a a n.c. v cc v cc c1 sw2 01 2 3 d1 150 e1 i1 v a sw1 i2 b1 v n.c. fig.1 0 3 150 1 e2 2 a1 a ba8274 / f |???| ic 4/8 ! ! ! ! h h h h ba8274 / f ????`????????`????? i 2 c ?N?hx??L????????????? ??? i 2 c ????s 10 ????? i 2 c ? ?s 10 ???? fig.2 ? ?????????s 10 ????l????? ?`????? i 2 c sda / scl ???`????`??`? ????h????_???????? v cc i 10 i gnd fig.2 i 2 c bus buffered bus l x s x current sense ! ! ! ! 8765 1234 buffer buffer v cc 150 150 fig.3 -com -com ba8274 / f |???| ic 5/8 ! ! ! ! ??h ??h ??h ??h 1. ??Q? (1) ?????? gH????????? i 2 c ???rg???Q??? ?r??e 1 ?O???????? `?r 1 ????`???e?? i 2 c `? ??`? ?????x k ????rO???? ? ??? ? ??? ] ???? ?? ? ? ? ????????????? ?rO???? ?e ????? Q??????? r = 1 sec c device + c wiring e : c device = t ? b??? i ?0?w- c wiring = t ? b??? ?!0?w- ? ?????? 10pf ?? 10pf ?? i 2 c `?????????s 10 ??? ?? ????????????? Mz ?? i 2 c `? ?? I ?? ? ????????? ??? ?? e???????? M ????? ?? ?? ???? ????? ?A ? ????? ? M? ??? ? ? ? ????? ?A ? ? ?? ? ?? ? ? i 2 c ????? Mz low ??????? 3ma ? 30ma i 2 c ? ??? ? ? ? e : r p = b?ow??? ?w? ??d \w eu?h^??qzqj<u?wf??h^??b{ 30ma > v cc -0.4 r p ba8274 / f |???| ic 6/8 2. i 2 c ??? sda sda lda ba8274/f 3000pf fig.4 ba8274/f v cc 5v existing proposed bus expansion gnd 0v r3 r2 r1 i 2 c i 2 c = 333k ? r2 = 1 sec 3000pf ????ww??? ? i ?0? ????w??? wiring cap. 3000pf total cap. 3000pf = 20k ? r1 = 1 sec 50pf i 2 c ??? ? i ?0? ?w i 2 c ?? 2 i 2 c devices 20pf strays 20pf ba8274 buffer 10pf total cap. 50pf = 33k ? r3 = 1 sec 30pf i 2 c ??? ? i ?0? w i 2 c ?? 1 i 2 c devices 10pf strays 10pf ba8274 buffer 10pf total cap. 30pf ? ? ? ? r2 = = 300 ? r2 0.1r3 r2 + 0.1r3 r1 = 20k ? t???u ? ^?om?h? r3 x ?a ??? r2 = = 262 ? 1 ++ 1 0.1r1 1 0.1r2 1 0.1r3 t???u ? ^?om?h? r1 q r3 x ?a ba8274 / f |???| ic 7/8 ? ) r1 r2 r3 ?`??? 1 sec r??? ? ? ? ? r2 ? r3 KM? ?? r2? r2 ? ? ??? r2 r1 ? r3 ?? ??? ? ?`??`? M? ?? ? ??? ? = 17.6ma < 30ma (5 ? 0.4)v 260 ? ! ! ! ! ? ? ? ? ? ? ? ? ? ? ? ? 1. ??R?? ??R ? ? ? C ^ ?? ? ?H?? _ J ? ?O?RO ? O ? 2. ? ?? ?X?R? ? ? ? ? C ^ ?? S p? ? vB ? ? ???????? ????? ? ?? ^ ?? C S ??? 3. s x s y i 2 c sda ? scl ba8274 / f ???????? ? ??? i 2 c sda ?` ? scl ?? ? ????? 4. l x l y , ?? lda ? lcl ????`?????? lda lcl ??? ! ! ! ! ?? ?? ?? ?? 0.05 0.1 0.15 0.2 0.3 0.4 0.25 0.35 0 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 ? ? ?v i lx , i ly : (a) s z? ?y v sx , v sy : (v) fig.5 ? s z? ?y? ? ?v i lx , i ly ba8274 / f |???| ic 8/8 ! ! ! ! (units : mm) dip8 ba8274 BA8274F sop8 0.5 0.1 3.2 0.2 3.4 0.3 85 14 9.3 0.3 6.5 0.3 0.3 0.1 0.51min. 2.54 0 ~ 15 7.62 0.3min. 0.15 0.1 0.4 0.1 0.11 6.2 0.3 4.4 0.2 5.0 0.2 85 4 1 1.27 1.5 0.1 0.1 |
Price & Availability of BA8274F
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