Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
Table 3.2 Electrical Specifications (continued)
VDD = 3V to 3.6V, VDD_5V = 4.5V to 5.5V, TA = -40°C to 85°C, all Typical values at TA = 27°C unless otherwise
noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
4 mA current drive
Output High Voltage
VDD -
0.4
VOH
VOL
V
V
Output Low Voltage
Leakage current
0.4
±5
4 mA current sink
ALERT and SYS_SHDN pins
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ILEAK
uA
3.2
SMBus Electrical Specifications (client mode)
Table 3.3 SMBus Electrical Specifications
VDD= 3V to 3.6V, TA = -40°C to 85°C Typical values are at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
SMBus Interface
Input High Voltage
Input Low Voltage
Output High Voltage
VIH
VIL
2.0
V
V
0.8
VDD
- 0.4
VOH
VOL
V
Output Low Voltage
Input High/Low Current
Input Capacitance
0.4
V
4 mA current sink
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I
IH / IIL
CIN
±5
uA
pF
5
SMBus Timing
Clock Frequency
fSMB
tSP
10
400
50
kHz
ns
Spike Suppression
Bus free time Start to
Stop
tBUF
1.3
us
Setup Time: Start
Setup Time: Stop
Data Hold Time
Data Setup Time
tSU:STA
tSU:STP
tHD:DAT
tSU:DAT
0.6
0.6
0.6
0.6
us
us
us
us
6
72
Revision 1.74 (05-08-08)
SMSC EMC2104
DATA1S6HEET
SMSC [ SMSC CORPORATION ]
