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LM3555 데이터시트(PDF) 6 Page - Texas Instruments |
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LM3555 데이터시트(HTML) 6 Page - Texas Instruments |
6 / 33 page LM3555 SNVS594E – JANUARY 2009 – REVISED NOVEMBER 2011 www.ti.com Electrical Characteristics (continued) Limits in standard typeface are for TA = +25°C. Limits in boldface type apply over the full operating ambient temperature range ( −30°C ≤ TA ≤ +85°C). Unless otherwise specified: VIN = 3.6V. (1) (2) Symbol Parameter Conditions Min Typ Max Units CURRENT AND VOLTAGE SPECIFICATIONS CONTROL INTERFACE VOLTAGE SPECIFICATIONS Simple Mode 0.54 I2C/EN Pin Voltage VI2C/EN 2.7V ≤ VIN ≤ 5.5V V Threshold I2C Mode 1.26 Low-Level Threshold VIL Voltage (SCL/EN1 and 2.7V ≤ VIN ≤ 5.5V 0.54 V SDA/EN2) High-Level Threshold VIH Voltage (SCL/EN1 and 2.7V ≤ VIN ≤ 5.5V 1.26 V SDA/EN2) Low-Level Output VOL Threshold Limit ILOAD = 3mA 0.4 V (SDA/EN2) CONTROL INTERFACE TIMING SPECIFICATIONS TI2C-Start I2C Logic Startup Time I2C/EN going high 250 500 µsec fSCL SCL Clock Frequency 400 kHz tI2C I2C Hang-Up Tie 35 msec tLOW Low Period of SCL Clock 1.3 µsec tHIGH High Period of SCL Clock 0.6 µsec Hold Time (repeated) tHD-STA 0.6 µsec START Condition Setup time for a repeated tSU-STA 0.6 µsec START condition tHD-DAT Data Hold Time 0 µsec tSU-DAT Data Setup Time 100 nsec Rise Time for SCL and tR 300 nsec SDA Fall Time for SCL and tF 300 nsec SDA Setup Time for Stop tSU-STO 0.6 µsec Condition Bus Free Time between tBUF 1.3 µsec Stop and Start Condition tVD-DAT Data Valid Time 0.9 µsec Data Valid Acknowledge tVD-ACK 0.9 µsec Time Capacitive Load for Each 20+0.1xC CB 400 pF Bus Line B 6 Submit Documentation Feedback Copyright © 2009–2011, Texas Instruments Incorporated Product Folder Links: LM3555 |
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