The Avago HCTLxx series ICs feature MHz clock speed and are designed to improve system performance in digital closed loop motion control systems and digital data input systems by shifting time-intensive quadrature decoder functions from software on a microprocessor to a cost-effective hardware solution. The ICs are used to interface rotary or linear quadrature incremental encoders to microprocessors and to interface digital potentiometers to digital data input buses. The use of Schmitt-triggered CMOS inputs and input noise filters provides reliable operation in noisy environments. It provides quadrature decoder output signals and a cascading capability that allows for position reads of more than 2 bytes by latching all the bytes and then reading the bytes sequentially over the 8-bit bus. Further information is available at www. Avago provides an extensive range of analog, mixed-signal and optoelectronic components and subsystems to more than 40, customers worldwide.
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HCTL-2021 ICs. Datasheet pdf. Equivalent