74HC85DB,118

Logic - Comparators cover a wide range of circuit applications that allow the comparison of two potentials or the conversion of an analogue signal into a digital output. The 74HC85DB,118 is a general purpose low power analog Schmitt trigger comparator, which operates with single or dual supply voltage inputs for a wide range of voltage differences.

Application field

74HC85DB,118 may be used in a variety of applications including waveform measurement and monitoring, waveform reconstruction and waveform comparison. It is particularly used for the digital reconstruction of waveforms, for waveform comparison and for waveform measurement and monitoring. It is used to measure and compare waveforms from various types of analogue instruments such as waveform generators, rectifiers, voltage timebase-shapers, and waveform analysis.

Working principle

The 74HC85DB,118 allows waveform reconstruction using a low-power Schmitt Trigger (LT). It is fabricated using CMOS technology and operates with a single supply voltage of 3.5 V to 5 V. The device comprises of an input stage (comparator) and an output stage (Schmitt trigger). The input stage senses the input waveforms and compares them to an internal reference voltage. The result is an output logic waveform which can be used in a variety of digital logic applications. The input stage is also capable of sensing devices with different logic levels, such as TTL and CMOS. The output stage of the 74HC85DB,118 is a low-power Schmitt Trigger, which is capable of producing outputs with “no overshoot”, no hysteresis and no latch-up. The Schmitt Trigger characteristic is capable of providing a digital output signal to a wide range of input waveforms. The Schmitt Trigger in the 74HC85DB,118 also exhibits very low power dissipation, reducing the overall power consumption of the device.

Conclusion

The 74HC85DB,118 is the ideal device for a variety of analog and digital circuit applications requiring precise comparisons between two potentials or between an analog signal and a digital signal. The low power Schmitt Trigger output stage of the device ensures clean logic switching with no overshoot, hysteresis or latch-up. With multiple supply voltage inputs and wide working temperature range, the 74HC85DB,118 is an excellent choice for designs in need of precise waveform comparison and reconstruction.