Broadcom Inc. Datasheets for Logic Decoders and Demultiplexers

Logic decoders and logic demultiplexers move data between inputs and outputs. In the case of digital decoders, the coded information is translated into familiar or uncoded formats, while digital multiplexers transmit data from one input through to several output lines. 
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Product Name Notes
Quadrature Decoder/Counter Interface ICs -- HCTL-2001-A00
Quadrature Decoder/Counter Interface ICs -- HCTL-2017-A00
HCTL-2xxx series is a direct drop-in replacement for HCTL-2000, HCTL-2020 and HCTL-2016 which has been obsoleted. It is a CMOS IC that performs quadrature decoding, bus interfacing and counter functions.
Quadrature Decoder IC -- HCTL-2022 The HCTL-2022 is CMOS ICs that perform the quadrature decoder, counter, and bus interface function. The HCTL-2022 is designed to improve system performance in digital closed loop motion control systems...
Quadrature Decoder IC -- HCTL-2032-SC The HCTL-2032 is CMOS ICs that perform the quadrature decoder, counter, and bus interface function. The HCTL-2032 is designed to improve system performance in digital closed loop motion control systems...