Friday, December 3, 2010

Do you know anything about ic 7400 datasheet

ic 7400 datasheet


The 7400 series of TTL are historically important as the first widespread . [ The 7400 series contains hundreds of devices that provide everything from basic , , and counters, to special purpose bus transceivers and ALU . Like the , the newer versions of the 7400 series are also usable as analog amplifiers using negative feedback similar to with only an inverting input . [ 7400 series parts were constructed using , forming what is referred to as or TTL . 74L - Low power compared to the original TTL logic family , very slow H - High speed still produced but generally superseded by the S-series, used in 1970s era computers S - F - Fast faster than normal Schottky, similar to AS HC - High speed CMOS, similar performance to LS, 12 nS HCT - High speed, compatible logic levels to bipolar parts AC - Advanced CMOS, performance generally between S and F AHC - Advanced High-Speed CMOS, three times as fast as HC ALVC - Low voltage - 1.65 to 3.3 V, AUC - Low voltage - 0.8 to 2.7 V, TPD < 1.9 nS@1.8 V FC - Fast CMOS, performance similar to F LVC - Low voltage – 1.65 to 3.3 V and 5 V tolerant inputs, tpd < 5.5 nS@3.3 V, tpd < 9 nS@2.5 V LVQ - Low voltage - 3.3 V LVX - Low voltage - 3.3 V with 5 V tolerant inputs BCT - BiCMOS, TTL-compatible input thresholds, used for buffers ABT - Advanced BiCMOS, TTL-compatible input thresholds, faster than ACT and BCT Many parts in the CMOS HC, AC, and FC families are also offered in T versions HCT, ACT, and FCT which have input thresholds that are compatible with both TTL and 3.3 V CMOS signals. [ Although the 7400 series was the first de facto industry standard TTL logic family, second-sourced by several semiconductor companies, there were earlier TTL logic families such as the SUHL family, MC4000 MTTL family not to be confused with RCA CMOS , the DM8000 family, 9300 series, and the 8200 family. Hobbyists and students equipped with tools, a ' ' and a 5-volt could also experiment with digital logic referring to how-to articles in and which featured circuit examples in nearly every issue. [ The part numbers for 7400 series logic devices often use the following naming convention, though specifics vary between manufacturers. A two-figure secondary prefix, of which the two most common are 74 , indicating a commercial temperature range device and 54 , indicating an extended military temperature range Up to four letters describing the logic subfamily, as listed above e.g. For example SN74ALS245N means this is a device probably made by SN , it is a commercial temperature range TTL device 74 , it is a member of the advanced low-power Schottky family ALS , and it is a bi-directional eight-bit buffer 245 in a plastic through-hole package N . Often a part from a different 74x00 subfamily could be substituted in a circuit, with the same function and yet more appropriate characteristics for an application perhaps speed or power consumption , which was a large part of the appeal of the 74C00 series over the competing series, for example. five versions of the 74x54 4-Wide AND-OR-INVERT gates , namely 7454 N , 7454W, 74H54, 74L54W and 74L54N/74LS54, are different from each other in and/or function! [ At the time the 7400 series was being made, some European manufacturers that traditionally followed the naming convention such as / produced a series of TTL integrated circuits with part names beginning FJ. Part numbering is somewhat different from the Western series: the technology modifications were considered different series, and were identified by different numbered prefixes - 155 series is equivalent to plain 74, 131 series is 74H, 158 series is 74L, 531 series is 74S, 555 series is 74LS, and 1530/1531/1533 are 74F/74AS/74ALS respectively. the number distinguishes variants with different number of inputs, or different number of elements within a die - ЛА1/ЛА2/ЛА3 LA1/LA2/LA3 are 2 four-input / 1 eight-input / 4 two-input NAND elements respectively equivalent to 7420/7430/7400 Before July 1974 the two letters from the functional description were inserted after the first digit of the series. [ [
ic 7400 datasheet ic 7400 datasheet
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