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Term: Logic Compatibility Definition: In the past, CMOS, TTL, and ECL oscillators were only capable of driving output loads of the same logic family. With the introduction of HCMOS logic, dual compatible oscillators are manufactured that can drive two logic families. Most Cardinal Components oscillators are capable of driving both HCMOS and TTL loads. The dual compatible oscillator’s output waveform voltages are derived from HCMOS logic. The logic output exceeds the minimum voltage level requirements of TTL, and with the higher output current capability of HCMOS, these dual compatible oscillators can drive both logic families. Be aware that oscillators not specifically designed for both families cannot be used to drive other logic families, i.e., TTL cannot drive HCMOS or ECL logic. Cardinal Components also offers oscillators that drive TTL and ECL logic exclusively.
Cardinal Components
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