HA1-4902-2 Intersil, HA1-4902-2 Datasheet - Page 5

IC COMPARATOR QUAD PREC 16-DIP

HA1-4902-2

Manufacturer Part Number
HA1-4902-2
Description
IC COMPARATOR QUAD PREC 16-DIP
Manufacturer
Intersil
Type
General Purposer
Datasheet

Specifications of HA1-4902-2

Number Of Elements
4
Output Type
CMOS, Push-Pull
Voltage - Supply
5 V ~ 15 V, ±2.5 V ~ 7.5 V
Mounting Type
Through Hole
Package / Case
16-CDIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Logic Level Translators
The HA-4900 series comparators can be used as versatile
logic interface devices as shown in the circuits above.
Negative logic devices may also be interfaced with
appropriate supply connections. If separate supplies are
used for V- and V
tolerate several volts of ground line differential noise.
RS-232 To CMOS Line Receiver
This RS-232 type line receiver to drive CMOS logic uses a
Schmitt trigger feedback network to give about 1V input
hysteresis for added noise immunity. A possible problem in
an interface which connects two equipments, each plugged
into a different AC receptacle, is that the power line voltage
may appear at the receiver input when the interface
connection is made or broken. The two diodes and a 3W
input resistor will protect the inputs under these conditions.
4.7kΩ
TTL TO CMOS
ANALOG INPUT MODULE
4.7kΩ
3W
1kΩ
COMPARATORS
1N914s
D/A
+5.0V
1/4
HA-4900
1/4
HA-4900
+
+
-
-
1N4001s
LOGIC
V
L
+
-, these logic level translators will
5
1/4
HA-4900
-
+
+10V
10kΩ
CMOS TO TTL
+5V TO +15V
10kΩ
PROCESSOR
56kΩ
HA-4900, HA-4902, HA-4905
PROCESSOR
1/4
HA-4900
1/4
HA-4900
+
+
MEMORY
-
-
MICRO-
V+
+5.0V
51kΩ
1kΩ
Window Detector
The high switching speed, low offset current and low offset
voltage of the HA-4900 series makes this window detector
circuit extremely well suited to applications requiring fast,
accurate, decision-making. The circuit above is ideal for
industrial process system feedback controllers or “out-of-
limit” alarm indicators.
Oscillator/Clock Generator
This self-starting fixed frequency oscillator circuit gives
excellent frequency stability. R
frequency determining network while R
regenerative feedback. Diode D
compensating for the difference between V
V
up to 100kHz is required, such as in automatic test
equipment, C
Schmitt Trigger
This circuit has a 100mV hysteresis which can be used in
applications where very fast transition times are required at
the output even though the signal input is very slow. The
hysteresis loop also reduces false triggering due to noise on
the input. The waveforms below show the trip points
developed by the hysteresis loop.
HIGH REF
LOW REF
SUPPLY
INPUT
150kΩ
150kΩ
1N914
. In applications where a precision clock generator
V+
C
D
1
1
1
may be replaced by a crystal.
(Zero Crossing Detector With Hysteresis)
+15V
1/4
HA-4900
1/2 HA-4900
+
-
150kΩ
+
-15V
+
V+
-
-
50kΩ
R
R
2
1
1
V
1
and C
L
+
enhances the stability by
1
2
comprise the
+5.0V
provides the
OH
f
1/4 HD-74C02
and
----------------------- -
2.1R
1
1
HIGH
IN
WINDOW
LOW
C
1

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