The timing circuit composed of HDl4538

Published:2011/6/21 22:00:00 Author:qqtang | Keyword: timing circuit | From:SeekIC

In the figure is the timing circuit composed of HDl4538. HDl4538 has many features, for example, when its single steady multi-resonance oscillator is used as the timer, both the positive edge or the passive edge of the pulse can trigger the circuit; the consuming current is low, when the working voltage is 15v, the current is only 15nA; the range of the working voltage is wide, which is 3~18v; the timing set is irrelevant to the working voltage, which is only decided by the external capacitors and the resistance values, the resistance can be 5kΩ～∞, the capacitance is 2000pF～∞. HDl4538 contains 2 single steady multi-resonance oscillators.



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