
D
2
Always order by complete part number, e.g.,  
A3141ELT 
 .
ABSOLUTE MAXIMUM RATINGS
at T
A 
= +25
°
C
Supply Voltage, V
CC
............................
  28 V
Reverse Battery Voltage, V
RCC
........... 
-35 V
Magnetic Flux Density, B ..........  
Unlimited
Output OFF Voltage, V
OUT
..................  
28 V
Reverse Output Voltage, V
OUT
...........
 -0.5 V
Continuous Output Current, I
OUT
...... 
25 mA
Operating Temperature Range, T
A
Suffix ‘E–’..................  
-40
°
C to +85
°
C
Suffix ‘L–’................  
-40
°
C to +150
°
C
Storage Temperature Range,
T
S
..............................  
-65
°
C to +170
°
C
These Hall-effect switches are monolithic integrated circuits with
tighter magnetic specifications, designed to operate continuously over
extended temperatures to +150
°
C, and are more stable with both
temperature and supply voltage changes.  The unipolar switching
characteristic makes these devices ideal for use with a simple bar or rod
magnet.  The four basic devices (3141, 3142, 3143, and 3144) are
identical except for magnetic switch points.
Each device includes a voltage regulator for operation with supply
voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic
Hall-voltage generator, temperature compensation circuitry, small-
signal amplifier, Schmitt trigger, and an open-collector output to sink
up to 25 mA.  With suitable output pull up, they can be used with
bipolar or CMOS logic circuits.  The A3141– and A3142– are im-
proved replacements for the UGN/UGS3140–; the A3144– is the
improved replacement for the UGN/UGS3120–.
The first character of the part number suffix determines the device
operating temperature range.  Suffix ‘E–’ is for the automotive and
industrial temperature range of -40
°
C to +85
°
C.  Suffix ‘L–’ is for the
automotive and military temperature range of -40
°
C to +150
°
C.  Three
package styles provide a magnetically optimized package for most
applications.  Suffix ‘–LT’ is a  miniature SOT89/TO-243AA transistor
package for surface-mount applications; suffix ‘–UA’ is a three-lead
ultra-mini-SIP.
FEATURES and BENEFITS
I
  Superior Temp. Stability for Automotive or Industrial Applications
I
  4.5 V to 24 V Operation … Needs Only An Unregulated Supply
I
  Open-Collector 25 mA Output … Compatible with Digital Logic
I
  Reverse Battery Protection
I
  Activate with Small, Commercially Available Permanent Magnets
I
  Solid-State Reliability
I
  Small Size
I
  Resistant to Physical Stress
Pinning is shown viewed from branded side.
SENSITIVE HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE OPERATION
3141
THRU
3144
Dwg. PH-003A
1
S
V
CC
G
3
2
O
X