54LS128/74ls128 lsttl 2 75 ? ?1/4 ?? a b y h h l h l h l l l h ? 74 54 ? ? vcc ?? 4.75 5 5.25 4.5 5 5.5 v v ih ??? 2 2 v v il ??? 0.8 0.7 v i oh ?? -26 -26 ma i ol ?? 24 12 ma t a ? -40 85 -55 125 ? tpd=12ns pd=5.5mw / ? ?? ?? bdtic ?? www.bdtic.com/semiconductor www.bdtic.com free datasheet http://www.ndatasheet.com
54LS128/74ls128 lsttl 2 75 ? ??????? 74 54 ? ? v ik ?? vcc= i i = - 18ma -1.5 -1.5 v i oh = 2.0 2.0 v oh ??? vcc= v il = i oh = -1.2 ma 2.7 2.5 3.4 v vcc= v ol ??? v ih =2v i ol = 0.5 0.25 0.4 v i i (??) vcc= v i =7v 0.1 0.1 ma i ih ?? vcc= v i =2.7v 20 20 a i il ?? vcc= v i =0.4v -0.4 -0.4 ma i os vcc= v o =0v -30 -130 -30 -130 ma i cch ??? vcc= v i =0v 3.6 1.8 3.6 ma i ccl ??? vcc= ? 13.8 6.9 13.8 ma ?? vcc=5.0v, t a =25 2 ? vcc=5.0v, t a =25 ? ?? t plh ? a b y 12 24 ns t phl ? a b y c l =45pf r l =667 ? 12 24 ns bdtic ?? www.bdtic.com/semiconductor www.bdtic.com free datasheet http://www.ndatasheet.com
|