HCTL-2017 Datasheet, PDF (1/12 Pages) AVAGO TECHNOLOGIES LIMITED – Quadrature Decoder/Counter Interface ICs

HCTL-2017 and HCTL-2021
Quadrature Decoder/Counter Interface ICs
Data Sheet
Description
Features
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.
• 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
Devices
• Interface Quadrature Incremental Encoders to
Microprocessors
• Interface Digital Potentiometers to Digital Data Input
Buses
Part Number
HCTL-2017
HCTL-2021
Description
33 MHz clock operation. 16-bit counter.
33 MHz clock operation. 16-bit counter. Quadrature decoder output signals.
Cascade output signals.
Pinout
PINOUT A
PINOUT B