3421

Internal Direction-Decoding Circuitry

Two Matched Hall Latches On A Single

Substrate Superior Temperature Stability

4.5 V to 18 V Operation Electrically Defined Power-On State Under-Voltage Lockout

It is strongly recommended that an external 0.01 F bypass capacitor be connected (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by the internal logic.

The simplest form of magnet that will operate these devices is a ring magnet.  Other methods of operation, such as linear magnets, are possible.  Extensive applica-tions information on magnets and Hall-effect sensors is also available in the "Hsall-Effect IC Applications Guide" which can be found in the latest issue of the Allegro MicroSystems Electronic Data Book, AMS-702 or Appli-cation Note 27701, or at www.allegromicro.com

Supply Voltage, V_CC . . . . . . . . . .. .   18 V
Magnetic Flux Density, B . . . .    Unlimited
Output OFF Voltage, V_OUT . . . . .  . .   V_CC
Output Sink Current, I_OUT . . . . . .   30 mA
Package Power Dissipation,
     P_D. . . . . . . . . . . . . . . . . . . .. .  500 mW
Operating Temperature Range, T_A
     Suffix 'EKA'. . . . . . ...   -40to +85
     Suffix 'LKA'. . . . . . .. . -40to +150

Storage Temperature Range,
     T_S . . . . . . . . . . . . . . .   -65 to +170