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参数资料
| 型号： | CMX644AD2 |
| 厂商： | CML MICROSYSTEMS PLC |
| 元件分类： | 调制器/解调器 |
| 英文描述： | 1.2 kbps DATA, MODEM, PDSO24 |
| 封装： | SOIC-24 |
| 文件页数： | 8/34页 |
| 文件大小： | 1174K |
| 代理商： | CMX644AD2 |
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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Revision 0.90 (08-19-08)
16
SMSC EMC2103
DATASHEET
3.2
SMBus Electrical Specifications (Client Mode)
TRIP_SET Measurement
Voltage Accuracy
VTRIP
0.5
1
%
Temperature Decode
Accuracy
TTRIP
0.5
°C
1% external resistor
1
2
°C
5% external resistor
RPM Based Fan Controller
Tachometer Range
TACH
480
16000
RPM
Tachometer Setting
Accuracy
Δ
TACH
±2.5
±5
%
Digital I/O pins
Input High Voltage
VIH
2.0
V
Input Low Voltage
VIL
0.8
V
Output High Voltage
VOH
VDD -
0.4
V
8 mA current drive
Output Low Voltage
VOL
0.4
V
8 mA current sink
Leakage Current
ILEAK
±5
uA
ALERT and SYS_SHDN pins
Device powered or unpowered
TA < 85°C
Table 3.3 SMBus Electrical Specifications
VDD= 3V to 3.6V, TA = -40°C to 125°C Typical values are at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
SMBus Interface
Input High/Low Current
IIH / IIL
±5
uA
Device powered or unpowered
TA < 85°C
Input Capacitance
CIN
410
pF
SMBus Timing
Clock Frequency
fSMB
10
400
kHz
Spike Suppression
tSP
50
ns
Bus free time Start to
Stop
tBUF
1.3
us
Setup Time: Start
tSU:STA
0.6
us
Setup Time: Stop
tSU:STP
0.6
us
Table 3.2 Electrical Specifications (continued)
VDD = 3V to 3.6V, TA = -40°C to 125°C, all Typical values at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
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