2
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
entire HCTL-20XX family con-
sists of a 4x quadrature decoder,
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-2000
contains a 12-bit counter. The
HCTL-2016 and 2020 contain a
16-bit counter. The HCTL-2020
also contains quadrature decoder
output signals and cascade
signals for use with many
standard counter ICs. The HCTL-
20XX family provides LSTTL
compatible tri-state output
buffers. Operation is specified for
a temperature range from -40 to
+85°C at clock frequencies up to
14 MHz.
Package Dimensions
25.91 ± 0.25
(1.02 ±0.010)
19.05 ± 0.25
(0.750 ± 0.010)
15°
15°
1.52 ± 0.13
(0.060 ± 0.005)
9.40 (0.370)
Operating Characteristics
Table 1. Absolute Maximum Ratings
(All voltages below are referenced to VSS)
Parameter
DC Supply Voltage
Input Voltage
Symbol
VDD
Limits
-0.3 to +5.5
-0.3 to VDD +0.3
-40 to +125
-40 to +85
Units
V
VIN
V
Storage Temperature
Operating Temperature
TS
°C
[1]
TA
°C
Table 2. Recommended Operating Conditions
Parameter
DC Supply Voltage
Ambient Temperature
Symbol
Limits
+4.5 to +5.5
-40 to +85
Units
V
VDD
T [1]
°C
A
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
