NCT1008CMT3R2G ON Semiconductor, NCT1008CMT3R2G Datasheet - Page 3

• Manufacturer Part Number: NCT1008CMT3R2G
• Description: TMP DIO MON/SMBUS 4CH UDFN
• Manufacturer: ON Semiconductor

Specifications of NCT1008CMT3R2G

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 127°C, -64°C ~ 191°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-WFDFN Exposed Pad
• Output Voltage: 3.6 V
• Output Current: 240 uA
• Input / Supply Voltage (max): + 3.6 V
• Input / Supply Voltage (min): - 0.3 V
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 4.5 W
• Minimum Operating Temperature: - 55 C
• Operating Temperature Range: - 55 C to + 150 C
• Supply Current: 350 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NOTE: The ground slug on 3x3 package can be left unconnected.
1. Guaranteed by design, but not production tested.
2. Time from 10% of SDATA to 90% of SCLK.
3. Time for 10% or 90% of SDATA to 10% of SCLK.
4. Time for 90% of SCLK to 10% of SDATA.
PIN ASSIGNMENT
SMBus/I
Pin No.
t
t
t
HD; STA
SU; DAT
SU; STO
1
2
3
4
5
6
7
8
Parameter
SDATA
t
SCLK
SU; STA
f
t
t
SCLK
t
HIGH
LOW
BUF
t
t
2
R
F
(Note 2)
(Note 3)
(Note 4)
C TIMING SPECIFICATIONS
ALERT/THERM2
STOP START
Mnemonic
t
THERM
BUF
SDATA
SCLK
GND
V
D+
D−
DD
Limit at T
t
t
LOW
HD;STA
MIN
400
300
300
600
600
100
600
1.3
0.6
1.3
Positive Supply, 2.8 V to 3.6 V.
Positive Connection to Remote Temperature Sensor.
Negative Connection to Remote Temperature Sensor.
Open−Drain Output. Can be used to turn a fan on/off or throttle a CPU clock in the event of an
overtemperature condition. Requires pullup resistor.
Supply Ground Connection.
Open−Drain Logic Output Used as Interrupt or SMBus ALERT. This can also be configured as a
second THERM output. Requires pullup resistor to V
Logic Input/Output, SMBus Serial Data. Open−Drain Output. Requires pullup resistor.
Logic Input, SMBus Serial Clock. Requires pullup resistor.
t
HD;DAT
and T
t
R
(Note 1)
MAX
Figure 2. Serial Bus Timing
t
F
t
HIGH
kHz max
http://onsemi.com
ns max
ns max
ns min
ns min
ns min
ns min
t
ms min
ms min
ms min
SU;DAT
Unit
3
−
Clock low period, between 10% points.
Clock high period, between 90% points.
Clock/data rise time.
Clock/data fall time.
Start condition setup time.
Start condition hold time.
Data setup time.
Stop condition setup time.
Bus free time between stop and start conditions.
START
Description
t
SU;STA
DD
t
.
HD;STA
Description
t
SU;STO
STOP