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MAX6648 데이터시트(PDF) 3 Page - Maxim Integrated Products |
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MAX6648 데이터시트(HTML) 3 Page - Maxim Integrated Products |
3 / 17 page Precision SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VCC = 3.0V to 5.5V, TA = -55°C to +125°C, unless otherwise specified. Typical values are at VCC = 3.3V and TA = +85°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ALERT, OVERT ISINK = 1mA 0.4 Output Low Voltage ISINK = 4mA 0.6 V Output High Leakage Current VOH = 5.5V 1 µA SMBus-COMPATIBLE INTERFACE (SCLK AND SDA) Logic Input Low Voltage VIL 0.8 V VCC = 3.0V 2.2 Logic Input High Voltage VIH VCC = 5.5V 2.6 V Input Leakage Current ILEAK VIN = GND or VCC -1 +1 µA Output Low-Sink Current ISINK VOL = 0.6V 6 mA Input Capacitance CIN 5pF SMBus-COMPATIBLE TIMING (Note 2) Serial Clock Frequency fSCLK (Note 3) 100 kHz Bus Free Time Between STOP and START Condition tBUF 4.7 µs START Condition Setup Time 4.7 µs Repeat START Condition Setup Time tSU:STA 90% to 90% 50 ns START Condition Hold Time tHD:STA 10% of SDA to 90% of SCLK 4 µs STOP Condition Setup Time tSU:STO 90% of SCLK to 90% of SDA 4 µs Clock Low Period tLOW 10% to 10% 4.7 µs Clock High Period tHIGH 90% to 90% 4 µs Data Setup Time tHD:DAT (Note 4) 250 µs Receive SCLK/SDA Rise Time tR 1µs Receive SCLK/SDA Fall Time tF 300 ns Pulse Width of Spike Suppressed tSP 050 ns SMBus Timeout tTIMEOUT SDA low period for interface reset 25 37 45 ms Note 1: All parameters tested at a single temperature. Specifications over temperature are guaranteed by design. Note 2: Timing specifications guaranteed by design. Note 3: The serial interface resets when SCLK is low for more than tTIMEOUT. Note 4: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SCLK’s falling edge. |
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