(China (Mainland))
Product Summary
The SN54LS393J is a dual 4-bit binary counter with individual clocks. It comprises two independent four-bit binary counters each having a clear and a clock input. N-bit binary counters can be implemented with each package providing the capability of divide-by-256. The SN54LS393J has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals.
Parametrics
SN54LS393J absolute maximum ratings: (1)supply voltage, VCC: 7V; (2)input voltage: 5.5V; (3)operating free-air temeprature: 0 to 70℃; (4)storage temperature range: -65 to 150℃.
Features
SN54LS393J features: (1)dual versions of the popular 90A, lS90 and 93A, LS93; (2)390, LS390 individual clocks for A and B flip-flops provide dual/2 and /5 counters; (3)393, LS393 dual 4-bit binary counter with individual clocks; (4)all have direct clear for each 4-bit counter; (5)dual 4-bit versions can significantly improve system densities by reducing counter package count by 50%; (6)typical maximum count frequency 35MHz; (7)buffered outputs reduce possibility of collector commutation.
Diagrams
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 SN54 |
Apex Tool Group (Formerly Cooper Tools) |
Pliers & Tweezers Xcelite 5" Cutter Side Cut Long Nose |
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SN54/74LS147 |
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SN54/74LS155 |
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SN54/74LS156 |
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SN54/74LS160A |
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SN54/74LS161A |
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Data Sheet |
Negotiable |
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