HCTL-2032, HCTL-2032-SC, HCTL-2032-SCT, HCTL-2022
Quadrature Decoder/ Counter Interface ICs
Data Sheet
Description
The HCTL-20XX-XX is CMOS ICs that perform the quadra-
ture decoder, counter, and bus interface function. The
HCTL-20XX-XX is designed to improve system perfor-
mance 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 effec-
tive hardware solution. The HCTL-20XX-XX consists of a
quadrature decoder logic, a binary up/down state coun-
ter, and an 8-bit bus interface. The use of Schmitt-trig-
gered 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 tem-
perature range from -40 to +100°C at clock frequencies
up to 33MHz.
The HCTL-2032 and HCTL-2032-SC have dual-axis capa-
bility 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 out-
put signals and cascade signals for use with many stan-
dard 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
ESD WARNING: Standard CMOS handling precautions should be observed with the HCTL-2032 family ICs.
Devices
Part Number
HCTL-03
HCTL-03-SC
HCTL-0
Description
3-bit counter, dual axis, decoder and cascade outputs, index channel support,
programmable count modes, and 33 Mhz clock operation.
All features of HCTL-03.
Most of the HCTL-03 features. The device supports single axis, and no decoder out-
put and cascade signals. The programmable count mode is set to 4x internally.
PINOUT B
X/Y
D1
D2
D3
CNTDEC
Y
CNTDEC
X
SEL2
CNTCAS
X
CNTCAS
Y
TEST
D4
D5
D6
CHI
Y
VSS
CHI
X
VDD
EN1
EN2
D0
CLK
SEL1
OE
U/D
X
U/D
Y
D7
RST
Y
RST
X
CHB
Y
CHB
X
CHA
X
CHA
Y
X/Y
D1
D2
D3
CNTDEC
Y
Package Drawing
A
B
C
PINOUT A
VDD
EN1
EN2
D0
CLK
OE
U/D
X
U/D
Y
D7
RST
Y
RST
X
CHB
Y
CHB
X
CHA
X
CHA
Y
SEL1
PINOUT C
VDD
D0
SEL1
OE
U/D
D7
RST
CHB
CHA
CLK
D1
D2
D3
SEL2
TEST
D4
D5
D6
VSS
INDEX
HCTL-2032-SC
HCTL-2032
CNTDEC
X
SEL2
CNTCAS
X
CNTCAS
Y
TEST
D4
D5
D6
CHI
Y
VSS
CHI
X
Package Dimensions (dimensions in inches)
1) HCTL - 2032
HCTL-2022
Operating Characteristics
Table 1. Absolute Maximum Ratings
(All voltages below are referenced to V
SS
)
Parameter
DC Supply Voltage
Input Voltage
Storage Temperature
Operating Temperature
[1]
Symbol
V
DD
V
IN
T
S
T
A
Limits
-0.3 to +6.0
-0.3 to
(V
DD
+0.3)
-55 to +150
-40 to +100
Units
V
V
°C
°C
Table 2. Recommended Operating Conditions
Parameter
DC Supply Voltage
Ambient Temperature
[1]
Symbol
V
DD
T
A
Limits
4.5 to 5.5
-40 to +100
Units
V
°C
Table 3. DC Characteristics V
DD
= 5V ± 5%; T
A
= -40 to 100°C
Symbol
V
IL [2]
V
IH [2]
V
T+
V
T-
V
H
I
IN
V
OH [2]
V
OL [2]
I
OZ
I
DD
C
IN [3]
C
OUT [3]
Parameter
Low-Level Input Voltage
High-Level Input Voltage
Schmitt-Trigger Positive-Going Threshold
Schmitt-Trigger Negative-Going Thresh-
old
Schmitt-Trigger Hysteresis
Input Current
High-Level Output Voltage
Low-Level Output Voltage
High-Z Output Leakage Current
Quiescent Supply Current
Input Capacitance
Output Capacitance
V
IN
=V
SS
or V
DD
I
OH
= -3.75 mA
I
OL
= +3.75mA
V
O
=V
SS
or V
DD
V
IN
=Vss or V
DD
Any Input
Any Output
-10
1.0
1.0
-10
2.4
3.5
3.5
1.5
2.0
1
4.5
0.2
1
1
5
5
0.4
+10
10
+10
4.0
Condition
Min
Typ
Max
1.5
Unit
V
V
V
V
V
µA
V
V
µA
µA
pF
pF
Notes
1. Free Air
2. In general, for any V
DD
between the allowable limits (+4.5V to +5.5V), V
IL
= 0.3V
DD
and V
IH
= 0.7V
DD
;
typical values are V
OH
= V
DD
- 0.5V and V
OL
= V
SS
+ 0.2V
3. Including package capacitance
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