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DS125BR800A Datasheet(PDF) 9 Page - Texas Instruments |
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DS125BR800A Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 54 page  DS125BR800A www.ti.com SNLS467 – NOVEMBER 2013 Electrical Characteristics — Serial Management Bus Interface Over recommended operating supply and temperature ranges unless other specified. Symbol Parameter Conditions Min Typ Max Unit SERIAL BUS INTERFACE DC SPECIFICATIONS VIL Data, Clock Input Low Voltage SDA and SCL 0.8 V VIH Data, Clock Input High Voltage SDA and SCL 2.1 3.6 V IPULLUP Current Through Pull-Up Resistor High Power Specification 4 mA or Current Source VDD Nominal Bus Voltage 2.375 3.6 V ILEAK-Bus Input Leakage Per Bus Segment (1) -200 +200 µA ILEAK-Pin Input Leakage Per Device Pin -15 µA CI Capacitance for SDA and SCL (1) (2) 10 pF RTERM External Termination Resistance Pullup VDD = 3.3V (1) (2) (3) 2000 Ω pull to VDD = 2.5V ± 5% OR 3.3V Pullup VDD = 2.5V (1) (2) (3) 1000 Ω ± 10% SERIAL BUS INTERFACE TIMING SPECIFICATIONS FSMB Bus Operating Frequency ENSMB = VDD (Slave Mode) 400 kHz ENSMB = FLOAT (Master Mode) 280 400 520 kHz TBUF Bus Free Time Between Stop and 1.3 µs Start Condition THD:STA Hold time after (Repeated) Start At IPULLUP, Max Condition. After this period, the 0.6 µs first clock is generated. TSU:STA Repeated Start Condition Setup 0.6 µs Time TSU:STO Stop Condition Setup Time 0.6 µs THD:DAT Data Hold Time 0 ns TSU:DAT Data Setup Time 100 ns TLOW Clock Low Period 1.3 µs THIGH Clock High Period (4) 0.6 50 µs tF Clock/Data Fall Time (4) 300 ns tR Clock/Data Rise Time (4) 300 ns tPOR Time in which a device must be (4) (5) 500 ms operational after power-on reset (1) Recommended value. (2) Recommended maximum capacitance load per bus segment is 400pF. (3) Maximum termination voltage should be identical to the device supply voltage. (4) Compliant to SMBus 2.0 physical layer specification. See System Management Bus (SMBus) Specification Version 2.0, section 3.1.1 SMBus common AC specifications for details. (5) Ensured by Design. Parameter not tested in production. Copyright © 2013 , Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: DS125BR800A |
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