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LM74 数据表(PDF) 3 Page - National Semiconductor (TI) |
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LM74 数据表(HTML) 3 Page - National Semiconductor (TI) |
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3 / 15 page ![]() Pin Descriptions Label SO-8 Pin # micro SMD Pin # Function Typical Connection SI/O 1 1 Slave Input/Output - Serial bus bi-directional data line. Schmitt trigger input. From and to Controller SC 2 5 Slave Clock - Serial bus clock Schmitt trigger input line. From Controller NC 3 No Connection No Connection GND 4 4 Power Supply Ground Ground NC 5 No Connection No Connection NC 6 No Connection No Connection CS 7 3 Chip Select input. From Controller V + 8 2 Positive Supply Voltage Input DC Voltage from 3.0V to 5.5V for the LM74CIM and 2.65V to 5.5V for the LM74CIBP. Bypass with a 0.1 µF ceramic capacitor. Typical Application 10090903 FIGURE 1. COP Microcontroller Interface www.national.com 3 |
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