80 5448 7448 BCD-to-Seven Segment Decoder / Driver [ I _ High-Speed TTL __|_ Low-Power Schottky TTL Standard TTL Low-Power TTL. Package Package | Package Package Package Device Type Device Type [~ Device Type -~4 Device Type Device Type c [P/M |cr Cc |P Mic C|P (MCF CIP IM|CF C|P {MCF Tl oe ce : SNS4LS 48 Wit Wr: | SIN 5448 Lo WD a : [ \ SN74LS 48 U END} SN 7448 UW iDING ; + ! FM5a48/FC 9358 [D.1) FO FAIRCHILD | FC 7448/F C 9358 [DDR FW t MC 5448 LW | } | MOTOROLA i MO 7448 LiDPPD) DMS54L S48 a N.S.C. DM74L S48 4 DM7448 Nay PHILIPS N 7448 oD qi SIGNETIC N 1448 Bw SIEMENS FLH55I a FUJITSU HITACHI O74 S48 Pw MITSUBISHI M53248 PO NEC - TOSHIBA Electrical Characteristics SN74LS48/SN74LS48 absolute maximum ratings over Pin Assignment (Top View) operating free-air temperature range Supply voltage. Vo WW | Operating tree-ar [SN5ALS S5Cto 125C input voltage W lemperature range SN74LS. 0'Cto 70C Storage temperature range 65Cto 150C ommi rati iti = rec ended operating conditions outeurs SN54LS48 SN74LS48 unit Yoo ; 9 a bt oc d _ MIN NOM MAX [MIN NOM MAX 16t_fis|_fial fis|_fret_firt_fieLfs Surply voltage. Von 45 55.5] 4.75 5 5.25] Vv the | | High-level output current, IQH fan 00 OOt AA BI/RB0 50 50 fee ee ae a thru q 2 6 Low-level output current, Io. , mA a BIRBO 1.6 3.2 __| BC _utkeons DA Operating free-air temperature. ~ a 55 125 0 70] C CR fai | U electrical characteristics over recommended operatting f ! free-air temperature range - : 3 5 sy 8 - LAMP RB OA, GND l PARAMETER * TEST CONDITIONS tf [MIN TYP 2 MAX| UNIT. weg TEST apeurs weuTs oe ViH High-level input voltage 2 v INPUTS Vin Low-level input vol-age 0.8] Vv Positive logic : see function table Input clamp voltage. any v Voo =MIN, |) = -18mA -i.5] ov ! input except Bl /RBO ce ! " High-level outputla thru g | Vog = MIN, Vin = 2, VOH Peay 100 1H 2.4 4.2 v voltage B1/RBO | Vj =0.8V. lg MAX Voo =MIN. Vo =0.85V, lo Output current | athrug | "CC 13 -2 mA Input conditions as for Vgy Low-level output Voo=MIN hol =2mA 0.25 0.4 You voltage a Mire oe y Vin =0.8V fo. Loma 0.25 0.4 Input current Any input 4 at maximum except Veg =MAX, Vj =7V o.r{ ma Input voltage BI / RBO { le Any input ing MOMever OUT J except | Veg =MAX, Vy =2.7 20) uA current 6I/RBO . ~ Any (nout ~ except 0.4 ie Low-level Bi / ABO | Veg = MAX, Vv =0.4V ma input curreat [BI /RBO 1.2 ' Shor t-cweut BI /RBO v =MAX A os output current co a} NOTES: i. The blanking input (BI) must be open or held at a high logic level when output functions through 15 are desired. The ripple-blanking input (RB!) must be \ Suppl Ven MAX SNSAL S48 25 38 A open or nigh, if blacking of a decimal zero Is not desired. ce uoply current ce . SN74L S48 25 38 2. When a jow togic levet is applied directly to the blanking input (61), all segment t outputs are low regardless of the level of any other input. 'PHL fromA input Voo=5 ley = 4kQ 100} ns 3. when rippie-bianking input (RBI) and inputs A, B, C, and D are at a low level 'PLH from Ainout Th 25 _ too |_ns with the lamp-test input high, all segment outputs go ow and the ripple-blanking IPHL. ffomABl input A _ too] ons. output (RBO)goes wt a tow level (response condition). tPLH fromRBlinput [oe 7 SpE | RL = 6k2 100] ns 4. When the blanking input/ripple-blanking output (BI/RBO) is open or held high and a low is applied to the lamp-test input, all segment outputs are high. BI/RBO is wire-AND logic serving as blanking input (BI) and/or ripple-blanking curput (RBO) + For conditions shown as MIN or MAX, use the appropriate value specitied under recommended operating conditions tor the apolicable type. TAN typical values are at Vog = 5V, Ta =25U *loc is measured with all outputs open and all inputs at 4.5V 'PLH = propagals ion delay time, low-to-mgh-level outout TpHL =propagation dalay time. high to-low-feval output. CONTINUED ON NEXT PAGE ORAM O)