LM81CIMT-3/NOPB National Semiconductor, LM81CIMT-3/NOPB Datasheet - Page 7

• Manufacturer Part Number: LM81CIMT-3/NOPB
• Description: IC MONITOR SYS HARDWAR 24-TSSOP
• Manufacturer: National Semiconductor

Specifications of LM81CIMT-3/NOPB

• Function: Hardware Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Speed Control, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.8 V ~ 3.8 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Supply Voltage Range: 2.8V To 3.8V
• Reset Type: Active-Low
• Supply Current: 1.4mA
• Digital Ic Case Style: TSSOP
• No. Of Pins: 24
• Operating Temperature Range: -40°C To +125°C
• Rohs Compliant: Yes
• Monitored Voltage: 2.5 V , 3.3 V , 5 V , 12 V
• Manual Reset: Not Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No
• Supply Voltage (max): 3.8 V
• Supply Voltage (min): 2.8 V
• Supply Current (typ): 400 uA (Typ)
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM81CIMT-3; *LM81CIMT-3/NOPB; LM81CIMT-3

Symbol
DIGITAL OUTPUTS (NTEST_OUT)
V
V
OPEN- DRAIN DIGITAL OUTPUTS (SMBData, RESET, CI, INT, T_CRIT_A)
V
DIGITAL INPUTS: VID0–VID4, NTEST_IN, A0/NTEST_OUT, A1, Chassis Intrusion (CI)
SMBus DIGITAL INPUTS (SMBCLK, SMBData)
Tach Pulse Logic Inputs (FAN1, FAN2)
ALL DIGITAL INPUTS
V
V
V
V
V
V
The following specifications apply for +2.8V
for T
OUT(1)
OUT(0)
OUT(0)
I
I
DC Electrical Characteristics
C
I
IN(1)
IN(0)
IN(1)
IN(0)
IN(1)
IN(0)
IN(1)
IN(0)
OH
IN
A
= T
Logical “1” Output Voltage
Logical “0” Output Voltage
Logical “0” Output Voltage
High Level Output Current
RESET and Chassis Intrusion
Pulse Width
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Current
Logical “0” Input Current
Digital Input Capacitance
J
= T
MIN
Parameter
to T
MAX
; all other limits T
DC
I
V
I
V
I
V
V
V
OUT
OUT
OUT
A
+
+
OUT
IN
IN
= T
= +2.8V
= +3.8V
V
= V
= 0 V
(Continued)
=
=
= −3.0 mA
+
= V
J
Conditions
±
±
+
= 25˚C. (Note 8)
3.0 mA at
3.0 mA at
+3.8V
+
DC
DC
, R
7
S
= 500 , unless otherwise specified. Boldface limits apply
(Note 9)
Typical
−0.005
0.005
0.1
45
20
LM81BIM
(Note 10)
0.7 x V
0.3 x V
Limits
100
2.4
0.4
0.4
2.0
0.8
2.1
0.8
−1
20
1
+
+
LM81CIM
(Note 10)
0.7 x V
0.3 x V
Limits
100
2.4
0.4
0.4
2.0
0.8
1.4
0.6
20
−1
1
+
+
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µA (max)
µA (max)
ms (min)
µA (min)
(Limits)
V (max)
V (max)
V (max)
V (max)
V (min)
V (min)
V (min)
V (min)
V (min)
Units
pF