MAX31785 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX31785 Datasheet PDF : 48 Pages
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6-Channel Intelligent Fan Controller
I2C/SMBUS INTERFACE ELECTRICAL CHARACTERISTICS
(VDD = 2.7V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VDD = 3.3V, TA = +25NC, unless otherwise noted.)
PARAMETER
SCL Clock Frequency
Bus Free Time Between STOP
and START Conditions
SYMBOL
fSCL
tBUF
CONDITIONS
MIN TYP MAX UNITS
10
100
kHz
4.7
Fs
Hold Time (Repeated) START
Condition
tHD:STA
4.0
Fs
Low Period of SCL
High Period of SCL
Data Hold Time
Data Setup Time
START Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
STOP Setup Time
Clock Low Timeout
tLOW
tHIGH
tHD:DAT
tSU:DAT
tSU:STA
tR
tF
tSU:STO
tTO
Receive
Transmit
4.7
Fs
4.0
Fs
0
ns
300
100
ns
4.7
Fs
300
ns
300
ns
4.0
Fs
25
35
ms
Note 1: All voltages are referenced to ground (VSS). Currents entering the IC are specified as positive, and currents exiting the IC
are negative.
Note 2: This does not include pin input/output currents.
Note 3: Guaranteed by design.
I2C/SMBus Timing
SDA
tBUF
tF
tLOW
SCL
tHD:STA
STOP START
tR
tHD:DAT
NOTE: TIMING IS REFERENCED TO VIL(MAX) AND VIH(MIN).
tHIGH
tSU:DAT
tHD:STA
tSU:STA
REPEATED
START
tSP
tSU:STO
8
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