78 544TA/TA4TA BCD-to-Seveen Segment Decder.Driver (15V Output) Schottky TTL High-Speed TTL Low-Power Schottky TTL Standard TTL Low-Power TTL Package Package Package Package Package Device Type Device Type Device Type Device Type}-~ + Device Type P[MICF C/P|MICFI C|P|MICF CIP|MI(CF C| P| MICF Tl SNS4L S47 Su wit] SN5447A Jf | [wad snsqca7 J ; aw SN74L S47 JING SN7447A JotNel SN74L47 LN. F M5447. F M9357B | Dit Fu FAIRCHILD Fo7aa7-F93578 [pfeil [Fo M0 MC5447 La TOROLA MC7447 LP NS.C. DMSaL S47 DMS5447A [ neat i OM74L S47 1 DM74a7A IN PHILIPS - Tv N7447 =e SIGNETICS ai to a SIEMENS a +. soepate dp FUJITSU Ta S47 Mi! - | HTACH 4 HD74L $47 Pa Ho7ag7A, Ho28a2_ | fen MITSUBISHI MT4L $47 yee, s3207 Pit] [7 _ NEC oe ePB2047 bin 4 | | os el fe. - - TOSHIBA | | TD34a7A Pal | Electrical Characteristics SN54LS47A/SN74LS47A absolute maximum ratings over operating Pin Assignment (Top View) free-air temperature range Supply voltage, Voc vv Operating tree-ar [SN5&LS{ S5Cto 125C Input voltage v temperature range |SN74LS OCto 70C ouTPUTS Current forced into v A . ima Storage temperature range ~ 65C to 150C cc g a woe Tae any output in the off siate 4 16 15 Jay 13 bay dis 10 a] recommended operating conditions 7 | Cy | SNS4LS47A SN74L847A_ | yy Ao nod Ao MIN NOM MAX | MIN NOM MAX Supply voltage. Voc 4.5 5 .5| 4.75 55.25] Vv BC Sone DA i | Off-state output voltage, Vo (off) 1a thru g 15 15s] Vv On-stae output current, lg (on) a thru g 12 24| mA High-level outcut curret, |OH BI/RBO 50 =s0[ HA 2 Fe PLAS Low-level output current, 1oL BI/ABO 1.6 3.2 mA a , LAMP AB RB \O GND Loerating free-air temperature. Ta 55 i25 0 7} "Cc inpuUTS TEST MTPUISIPUTS OT electrica actstics over recommended operating Positive logic= see function table free-air tanperature range PARAMETER * TEST CONDITIONS t MIN TY} MAX UNIT VIH High-tevel input voltage 2 v Vit Low-ievel input voltage 0.8 Vv input clamp voltage. any v Voc=MIN, y= 18mA 1.5] ov ingut except B1/ABO ce =o 18m High-level Voc=MIN. Vin=2V, Von 3 BI/RBO ce iW 2.4 4.2 v output voltage ViL=0.8V, lon = 50u4 | Voc=MIN, Viy= 2. Vo. Low-levet Bt/RBO Cc lH 0.25 0.4 Vv output voltage Vin =0.8V. Jol =I.6mA Off-state output] Voo=MAX, ViH=2V. 40 (off) e a thru g ce Iq 250) vA current ViL=0.8V, Vo (off) =MAX Qu-state output! Voc = MAX, Via 2V. Yo (on) euya tary g ce " 0.2 0.4} V voltage VIL 08V. 'Q (onp=l2ma Input current at) Any input \ maximum input Voo=MAX, Vi=7Vv oa} vottage except B1/ABO High-level input | Any input =MAX, V,=2.7V A iM current except BI/RBO| CC | 20) Any input 04 MW Low-level exceptB1/FBO |Voco=MAX, Vj=0.a ma (put current BIRBO 1.2 \ Short-orrouit | 3 apo IVeg=MAx 0 2] ma c= = = m os output current wee 3 _ SN54L5 7 13 NOTES: |. The blanking input (BI) must be open or held at a high logic level when 1 Supp t Vou =MAXx | A 9 inp oP gn Tog ce upply curren ce [/SN74LS 7 13 output functions O through 15 are desired. The ripple-blanking input (RBI) must toft Turn-off time from Aiput 100 be open or high if blanking of a decimal zero is not desired ton Turn-on ume from A Input Voo=5V, TA=25. 001 "S 2. When a jow jogic levet 1s applied directly to the planking input (BI), all seqment outputs are off regardiess of the ievel of any other input. tott___ Turn-off time from RBI input |c, =15pF. Ry = 6652 100 | os 3. When ripple-blanking input (RBI) and inputs A,8,C,and D are at a low lon Turn-on-time from BRI input 190 level with the lamp test input high, all segment outputs go off and the ipple-blanking output (RBO)goes to a iow ievet (response condition) 4. When the bianking input/ripple blanking output (Bi/RBO) is open or held high and a low ts applied to the lemp-test input, all segment outputs are on. # = Bi/RBO is wire-AND logic serving as blanking input (Bi) and/or rippie- blanking output (RBO). t For conditions shown as MIN or MAX, use the appropri ate value specified under recommended operating conditions for the applicable type PAIl typical values are at Voc =SV. Ta=25C a icls Measured ~ith all outputs open and ati inputs at 4.5V. ~ toff corresponds to tpy_Hand th, corresponds to IPHL. CONTINUED ON NEXT PAGE (RAO MC)