Surface Mount Quadrature
Decoder/Counter Interface ICs
Technical Data
HCTL-2016 #PLC
HCTL-2020 #PLC
Features
•
20 Pin PLCC Surface Mount
Package
• All Features of the HCTL-
2016 and HCTL-2020 PDIP
The HCTL-2016 #PLC and HCTL-
2020 #PLC have all of the same
features, functions, and operating
characteristics as the HCTL-2016
and HCTL-2020 PDIP (plastic
dual-in-line package).
For further information on the
operation and function of the
HCTL-2016 #PLC and 2020
#PLC, please refer to the HCTL-
2000/HCTL-2016/HCTL-2020
data sheet.
Applications
Typical applications include
interfacing incremental encoders
to microprocessors and
interfacing digital potentiometers
to digital data input buses.
Note:
Agilent Technologies
encoders are not recommended
for use in safety critical
applications. Eg. ABS braking
systems, power steering, life
support systems and critical care
medical equipment. Please
contact sales representative if
more clarification is needed.
Description
The HCTL-2016 #PLC and HCTL-
2020 #PLC are quadrature
decoder/counter interface ICs in a
20 pin PLCC (plastic leaded chip
carrier) surface mount package.
These CMOS ICs interface
incremental encoders to
microprocessors by performing
the quadrature decoder, counter,
and bus transfer functions.
Pinouts
V
DD
CLK
V
DD
SEL
CLK
SEL
D0
D
1
D0
1
3
OE
NC
NC
RST
CH B
4
5
6
7
8
2
1
20 19
18
17
16
15
14
D
2
D
3
NC
NC
D
4
OE
U/D
NC
RST
CH B
4
5
6
7
8
3
2
20 19
18
17
16
15
14
D
2
D
1
D
3
CNT
DCDR
CNT
CAS
D
4
9 10 11 12 13
V
SS
CH A
D
7
D
6
D
5
9 10 11 12 13
CH A
V
SS
7
D
6
HCTL-2016 #PLC
HCTL-2020 #PLC
ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC
DISCHARGE.
D
5
D
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
