Description

The HCTL-2021/2017 is CMOS ICs that performs the quadrature decoder, counter, and bus interface function. The HCTL-2021/2017 is designed to improve system performance in digital closed loop motion control systems and digital data input systems. It does this by shifting time intensive quadrature decoder functions to a cost effective hardware solution. The HCTL-2021/2017 consists of a quadrature decoder logic, a binary up/down state counter, and an 8-bit bus interface.

Features

• Interfaces Encoder to Microprocessor

• 33 MHz Clock Operation

• High Noise Immunity:

   Schmitt Trigger Inputs and Digital Noise Filter

• 16-Bit Binary Up/Down Counter

• Latched Outputs

• 8-Bit Tristate Interface

• 8 or 16-Bit Operating Modes

• Quadrature Decoder Output Signals, Up/Down and Count

• Cascade Output Signals, Up/Down and Count

• Substantially Reduced System Software

• 5V Operation (VDD – VSS)

• TTL/CMOS Compatible I/O

• Operating Temperature: -40°C to 85°C

• 16-pin and 20-Pin Launch Pad

Applications

• Interface Quadrature Incremental Encoders to Microprocessors

• Interface Digital Potentiometers to Digital Data Input Buses