lm74citpx-5 National Semiconductor Corporation, lm74citpx-5 Datasheet
lm74citpx-5
Available stocks
Related parts for lm74citpx-5
lm74citpx-5 Summary of contents
Page 1
... System Thermal Management n Personal Computers n Disk Drives n Office Electronics Simplified Block Diagram MICROWIRE ® registered trademark of National Semiconductor Corporation. TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation 12-Bit Plus Sign Temperature Sensor n Electronic Test Equipment Features n 0.0625˚ ...
Page 2
... LM74CIBPX-5 T9 LM74CITP-3 T10 LM74CITPX-3 T10 LM74CITP-5 T11 LM74CITPX-5 T11 www.national.com 10090902 Note: - Pin numbers are referenced to the package marking text orientation. Pin 1 is designated by the square. - Reference JEDEC Registration MO-211, variation BC - The top 4 characters designate the date code. The bottom 3 characters designate the device type (see ordering information) ...
Page 3
Pin Descriptions Label SO-8 micro Pin # SMD Pin # SI Slave Input/Output - Serial bus bi-directional data line. Schmitt trigger input Slave Clock - Serial bus clock Schmitt trigger input line ...
Page 4
Absolute Maximum Ratings Supply Voltage Voltage at any Pin Input Current at any Pin (Note 2) Package Input Current (Note 2) Storage Temperature ESD Susceptibility (Note 4) Human Body Model LM74CIBP and LM74CITP, pin A2 (SC) LM74CIM,LM74CIBP, and LM74CITP all ...
Page 5
Logic Electrical Characteristics DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for V + LM74CIBP -3, LM74CITP- 3.0V to 3.6V for the LM74CIM -3 and V limits apply for ...
Page 6
Logic Electrical Characteristics Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: When the input ...
Page 7
Logic Electrical Characteristics Note 7: Typicals are 25˚C and represent most likely parametric norm. A Note 8: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Note 9: This specification is provided only to indicate how ...
Page 8
Typical Performance Characteristics Average Power-On Reset Voltage vs Temperature Static Supply Current vs Temperature (micro SMD) 1.0 Functional Description The LM74 temperature sensor incorporates a band-gap type temperature sensor and 12-bit plus sign ∆Σ ADC (Delta- Sigma Analog-to-Digital Converter). Compatibility ...
Page 9
Functional Description munication will consist of 32 serial clocks. The first 16 clocks comprise the transmit phase of communication, while the second 16 clocks are the receive phase. When CS is high SI/O will be in TRI-STATE tion should ...
Page 10
Functional Description 1.5 INTERNAL REGISTER STRUCTURE The LM74 has three registers, the temperature register, the configuration register and the manufacturer’s/device identifi- cation register. The temperature and manufacturer’s/device identification registers are read only. The configuration reg- ister is write only. ...
Page 11
Serial Bus Timing Diagrams a) Reading Continuous Conversion - Single Eight-Bit Frame b) Reading Continuous Conversion - Two Eight-Bit Frames 10090914 c) Writing Shutdown Control FIGURE 7. Timing Diagrams 11 10090915 10090918 www.national.com ...
Page 12
Application Hints To get the expected results when measuring temperature with an integrated circuit temperature sensor like the LM74 important to understand that the sensor measures its own die temperature. For the LM74, the best thermal path ...
Page 13
Typical Applications FIGURE 9. LM74 digital input control using micro-controller’s general purpose I/O. (Continued) 13 10090919 www.national.com ...
Page 14
Physical Dimensions Order Number LM74CIM-3, LM74CIMX-3, LM74CIM-5 or LM74CIMX-5 Order Number LM74CIBP-3,LM74CIBPX-3, LM74CIBP-5, LM74CIBPX-5 The following dimensions apply to the BPD05MPB package shown above: X1=1565µm www.national.com inches (millimeters) unless otherwise noted 8-Lead Molded Small Outline Package NS Package Number M08A ...
Page 15
... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 5-Bump micro SMD Ball Grid Array Thin Package Order Number LM74CITP-3,LM74CITPX-3, LM74CITP-5, LM74CITPX-5 The following dimensions apply to the TPD05QSA package shown above: X1=1590µm National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications ...