3421 Datasheet | Allegro MicroSystems

FEATURES 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 Always order by plete part number, e.g., A3421EKA . 3421 AND 3422 HALL-EFFECT, DIRECTION-DETECTION SENSORS FUNCTIONAL BLOCK DIAGRAM 1 SUPPLY 2 DIRECTION UVLO LOGIC POWER-ON LOGIC GROUND E1 OUTPUT E2 E1 SPEED Dwg. FH-018 TIMING DIAGRAM CHANGE IN DIRECTION td DIRECTION Dwg. WH-012A +B 0 BOP1 BRP1 -B +B 0 BRP2 -B BOP2 OUT E1 OUT E2 (INTERNAL) SPEED (OUT E1 XOR OUT E2) 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1999 Allegro Micro Systems, Inc. 3421 AND 3422 HALL-EFFECT, DIRECTION-DETECTION SENSORS ELECTRICAL CHARACTERISTICS over operating temperature range. Limits Characteristic Supply Voltage Range Output Leakage Current Output Saturation Voltage Power-On State Under-Voltage Lockout...