DM7441A ETC2 | Alldatasheet
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BCD/Decimal Decoders/Drivers General Description The D0M5441A/DM7441A is a BCD-to-decimal decoder a minimum of external circuitry, can use these invalid designed to drive gas-filled NIXIE tubes. The device is codes in blanking leading- and/or trailing-edge zeros in a also capable of driving other types of low-current lamps display. and relays. Input clamp diodes are also provided to clamp negative- An over-range decoding feature provides that if binary voltage transitions in order to minimize transmission-line numbers between 10 and 16 are applied to the input, effects. sleet significant bit (0-5) will be decoded on the _— - ®. Drive cold-cathode, numeric indicator tubes directly The DM54141/DM74141 is a BCD-to-decimal decoder = Fully decoded inputs designed specifically to drive cold-cathode indicator ® Low leakage current tubes. DM54/7441A 1.8uA @ 50V DMS4/74141 50uA @ 55V Full decoding is provided for all possible input states. ® Low power dissipation For binary inputs 10 through 15, all the outputs are DMS54/7441A 105 mW typical off. Therefore the DMS4141/DM74141, combined with DM84/74141 65 mW typical Connection Diagram ‘ourrets ourpuTs Ts © om % 7 @ ss » “ yD w Ll » 1 ° es Ce Ce ee es os we ve tt or ae Truth Tables SAA 1As7Aa1A 54141/74141 fepeteqa| or | CGE ‘fete Ts Tal ete Te] “on” Cy a ae 0 cfefete ° Cypeypeyu 1 we fueyedu 1 tfeyufe 2 cfeftade 2 tfefudu 3 cjufalta 3 t H t t 4 L H t L 4 LJavefa] 7s LJH]edH 5 cfafade 6 cj fade 6 LPH] HH ? LC JH ]H]H 7 Afeyete a we fede 8 Hiefjeltn 9 wife je lH 9 [woven wanoe | __ [oven rance [|__| c C C NONE L H H NONE
4 L L NONE
H 4 H NONE. H™ High Level, L = Low Level “All other outputs are off
$Y MSI DM54/DM7441A,141 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER CONDITIONS [atid rs [nerves MmaK_[ mn TvPCH WAR | Vou [Wion bevel input vorge [OV Vor | Onsumounnvoroe |) oy) 7p, [ewe | ae PY saan! [ese 80 8 | am a eT ean | Yo" 80 [Ha 278C ag “een A a a Mae LL lon | Off State Reverse Current . waoy Ltassee Tw Ts fortnoutCouns rors | Nee "MOYO "SV a saefe SCA Vou | OrtSten Own Vonage a CO” A [iitvemp nn [veccmmvcey Pt Pe fm Input Voltage. Tin | High Level Input Current . a ee ty [Lowtwelinnn Garent |) wy eoav [Ame | tote | te tee [Svopvcurent [Vecwmeay te Ps | a Notes (1) All typical values are at Voc « 5V, Ta = 28°C. (2) Igg is measured with all inputs grounded and outputs open, Logic Diagrams ; , ° S441A/7441A 64141/74141 i i : am f>o+-d> *. af D+ =— age Ht Yin F wolves! [to HpO* =, HE = iia i ¥3 tet po |S L_ || : _—— an ty aplpHHt — [Hese, esa a ® ; oH re = Ue, B 1 eS ne ir Stim ‘ _) D oF re 2 [A o Ur OND =12 2 BD: aad a
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