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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. The use of Schmitt-triggered CMOS inputs and input noise filters allows reliable operation in noisy environments. The HCTL-2021/2017 contains 16-bit counter and provides TLL/CMOS compatible tri-state output buffers. Operation is specified for a temperature range from 40 to +85°C at clock frequencies up to 33MHz.
The HCTL-2021/2017 provides quadrature decoder output signals and cascade signals for use with many standard computer ICs.
The HCTL-2021/2017 is compliant to RoHS directive and had been declared as a lead free product.
HCTL-2017 Maximum Ratings
Parameter
Symbol
Limits
Units
DC Supply Voltage
VDD
-0.3 to +6.0
V
Input Voltage
VIN
-0.3 to (VDD +0.3)
V
Storage Temperature
TS
-40 to +100
Operating Temperature [1]
TA
-40 to +85
HCTL-2017 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 to 85 • 16-pin and 20-Pin Launch Pad
HCTL-2017 Typical Application
• Interface Quadrature Incremental Encoders to Microprocessors • Interface Digital Potentiometers to Digital Data Input Buses