Home / Engineering Books

Engineering Books

74ls47 (BCD to 7-Segment Decoder) Datasheet

The DM74LS47 accepts four lines of BCD (8421) inputdata, generates their complements internally and decodesthe data with seven AND/OR gates having open-collectoroutputs to drive indicator segments directly. Each segmentoutput is guaranteed to sink 24 mA in the ON (LOW) stateand withstand 15V in the OFF (HIGH) state with a maxi-mum …

Read More »

555 Timer IC Tutorial

The 555 timer IC was first introduced arround 1971 by the Signetics Corporation as theSE555/NE555 and was called “The IC Time Machine” and was also the very first and onlycommercial timer ic available. It provided circuit designers and hobby tinkerers with a relativelycheap, stable, and user-friendly integrated circuit for both …

Read More »

74LS160 (Decade Counter) Datasheet

The LS160A/161A/162A/163A are high-speed 4-bit synchronous counters. They are edge-triggered, synchronously presettable, and cascadable MSI building blocks for counting, memory addressing, frequency division and other applications. The LS160A and LS162A count modulo 10 (BCD). The LS161A and LS163A count modulo 16 (binary.)

Read More »