Temperature Monitors and

PWM Fan Controllers

_______________________________________________________________________________________

3

Note 2: Not production tested, guaranteed by design.

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Temperature Conversion Time

250

ms

Conversion Rate Timing Error

(Note 2)

25

25

%

High level

80

100

120

Remote-Diode Sourcing Current

Low level

8

10

12

µA

DXN Source Voltage

0.7

V

TACHOMETER Input Hysteresis

100

mV

Output Low Voltage (Sink Current)

SDL, SDR, THERM, FAN_FAULT, SMBDATA,

0.4

V

Output High Leakage Current

INT, SDL, SDR, THERM, FAN_FAULT,

SMBDATA, PWM_OUT

1µA

Logic Low Input Voltage

SMBDATA, SMBCLK, INT, THERM, TACH/AIN

0.8

V

3.0V

2.2

Logic High Input Voltage

SMBDATA, SMBCLK, INT,

THERM, TACH/AIN

5.5V

2.6

V

Input Leakage Current

SMBDATA, SMBCLK, INT, THERM;

±1

µA

Input Capacitance

5pF

SMBus TIMING

Serial Clock Frequency

(Note 2)

10

100

kHz

Clock Low Period

10% to 10% (Note 2)

4

µs

Clock High Period

90% to 90% (Note 2)

4.7

µs

Bus Free Time Between Stop and

Start Condition

(Note 2)

4.7

µs

SMBus Start Condition Setup

Time

90% of SMBCLK to 90% of SMBDATA (Note 2)

4.7

µs

Start Condition Hold Time

10% of SMBDATA to 10% of SMBCLK (Note 2)

4

µs

Stop Condition Setup Time

90% of SMBCLK to 10% of SMBDATA (Note 2)

4

µs

Data Setup Time

10% of SMBDATA to 10% of SMBCLK (Note 2)

250

ns

Data Hold Time

10% of SMBCLK to 10% of SMBDATA (Note 2)

300

ns

SMBus Fall Time

(Note 2)

300

ns

SMBus Rise Time

(Note 2)

1000

ns

SMBus Timeout

29

37

45

ms