LM74CIM-3/NOPB National Semiconductor, LM74CIM-3/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM74CIM-3/NOPB
• Description: IC TEMP SENSOR DGTL 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LM74CIM-3/NOPB

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 150°C
• Output Type: MICROWIRE™, SPI™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM74CIM-3/NOPB

SI/O
SC
NC
GND
NC
NC
CS
V
+
Pin Descriptions
Label
Typical Application
SO-8
Pin #
1
2
3
4
5
6
7
8
micro
Pin #
SMD
1
5
4
3
2
Slave Input/Output - Serial bus bi-directional data
line. Schmitt trigger input.
Slave Clock - Serial bus clock Schmitt trigger input
line.
No Connection
Power Supply Ground
No Connection
No Connection
Chip Select input.
Positive Supply Voltage Input
FIGURE 1. COP Microcontroller Interface
Function
3
From and to Controller
From Controller
No Connection
Ground
No Connection
No Connection
From Controller
DC Voltage from 3.0V to 5.5V for the LM74CIM
and 2.65V to 5.5V for the LM74CIBP and
LM74CITP. Bypass with a 0.1 μF ceramic
capacitor.
10090903
Typical Connection
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