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A1454KLETR-2F-T Datasheet(PDF) 5 Page - Allegro MicroSystems |
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A1454KLETR-2F-T Datasheet(HTML) 5 Page - Allegro MicroSystems |
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5 / 15 page  3V Hall Effect Linear Sensor with I2C Output A1454 5 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Characteristics Symbol Test Conditions Min. Typ. Max. Unit Bus Free Time Between Stop and Start tBUF 1.3 – – µs Hold Time Start Condition tndSTA 0.6 – – µs Setup Time for Repeated Start Condition tsuSTA 0.6 – – µs SCL Low Time tlow 1.3 – – µs SCL High Time thigh 0.6 – – µs Data Setup Time tsuDAT 100 – – ns Data Hold Time thdDAT 0 – 900 ns Setup Time for Stop Condition tsuSTO 0.6 – – µs Logic Input Low Level (SDA, SCL pins) VIL – – 30 %VCC Logic Input High Level (SDA, SCL pins) VIH 70 – – %VCC Logic Input Current IIN VIN = 0 V to VCC –1 0 1 µA Output Voltage (SDA pin) VOL ILOAD = 1.5 mA – – 0.36 V Clock Frequency (SCL pin) fCLK – – 400 kHz Output Fall Time (SDA pin) tf RPU = 2.4 kΩ, CB = 100 pF – – 250 ns I2C Pull-Up Resistance REXT 2.4 10 – kΩ Total Capacitive Load for Each of SDA and SCL Buses CB – – 100 pF *These values are ratiometric to the supply voltage. I2C Interface Characteristics are ensured by design and not factory tested. *Contact Allegro for 1.8V I2C Bus support. I2C INTERFACE CHARACTERISTICS*: valid at TA = 25°C, VCC = 3.0 V, and REXT = 10 kΩ; unless otherwise noted t suSTA t suDAT t LOW t suSTO t hdSTA t hdDAT t HIGH t BUF SDA SCL Figure 1: I2C Interface Timing Diagram |
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