US3881EUA Melexis Inc, US3881EUA Datasheet - Page 8
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US3881EUA
Manufacturer Part Number
US3881EUA
Description
IC HALL ELFFECT SW MP TO-92UA
Manufacturer
Melexis Inc
Type
Digital Latchr
Specifications of US3881EUA
Sensing Range
9mT Trip, -9mT Release
Voltage - Supply
2.2 V ~ 18 V
Current - Supply
5mA
Current - Output (max)
50mA
Output Type
Digital, Open Drain
Operating Temperature
-40°C ~ 85°C
Package / Case
TO-92UA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Other names
Q3906089
Rotary Interrupt Switch
The interrupt switch can be incorporated in applications of speed or position sensing, generally of rotat-
ing objects. The Rotary Interrupt Switch, in Figure 6, uses a toothed ring to interrupt the magnetic field
reaching the Hall IC. When a solid piece of steel (ferrous vane) blocks the magnetic field, the switch turns
OFF. During the gaps, or spaces in the steel, the South magnetic pole turns ON the switch. This is the sys-
tem commonly used for automotive ignition and many industrial applications, where accurate position is
critical.
Figure 6, Rotary Interrupt Switch
Figure 6 uses a notched
interrupter on a rotating
shaft to activate the device.
Figure 6
S
N
A-10
Section 3 - Applications
3-6