Description
The HCTL-20XX-XX is CMOS
ICs that perform the
quadrature decoder, counter,
and bus interface function. The
HCTL-20XX-XX 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-20XX-XX
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-20XX-
XX contains 32-bit counter and
provides LSTLL compatible tri-
state output buffers. Operation
is specified for a temperature
range from
40 to +100
°
C at
clock frequencies up to 33MHz.
The HCTL-2032 and HCTL-
2032-SC have dual-axis
capability and index channel
support. Both devices can be
programmed as 4x/2x/1x count
mode. The HCTL-2032 and
HCTL2032-SC also provides
quadrature decoder output
signals and cascade signals for
use with many standard
computer ICs.
The HCTL-2022 has most of the
HCTL-2032 features, but it can
only supports single axis and
fixed at 4x count mode. The
HCTL-2022 doesn’t provide
decoder output and cascade
signals.
Features
Interfaces Encoder to
Microprocessor
33 MHz Clock Operation
Programmable Count Modes (1x,
2x or 4x)
Single or Dual Axis Support
Index Channel Support
High Noise Immunity:
Schmitt Trigger Inputs and Digital
Noise Filter
32-Bit Binary Up/Down Counter
Latched Outputs
8-Bit Tristate Interface
8, 16, 24, or 32-Bit Operating Modes
Quadrature Decoder Output
Signals, Up/Down and Count
Cascade Output Signals, Up/Down
and Count
Substantially Reduced System
Software
5V Operation (V
DD
V
SS
)
TTL/CMOS Compatible I/O
Operating Temperature: -40
°
C to
100
°
C
32-Pin PDIP, 32-Pin SOIC, 20-Pin
PDIP
Applications
Interface Quadrature Incremental
Encoders to Microprocessors
Interface Digital Potentiometers to
Digital Data Input Buses
Agilent HCTL-2032, HCTL-2032-SC,
HCTL-2022
Quadrature Decoder/Counter
Interface ICs
Data Sheet
ESD WARNING:
Standard CMOS handling precautions should be observed with the HCTL-2032 family ICs.