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PC87413 датащи(PDF) 237 Page - National Semiconductor (TI) |
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PC87413 датащи(HTML) 237 Page - National Semiconductor (TI) |
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237 / 257 page ![]() 11.0 Device Characteristics (Continued) Revision 1.2 237 www.national.com 11.3.1 Pull-Up Resistor Symbol: PUnn 11.3.2 Pull-Down Resistor Symbol: PDnn 11.4 PACKAGE THERMAL INFORMATION Thermal resistance (degrees C/W) ThetaJC and ThetaJA values for the PC8741x package are as follows: Table 3. Theta ( Θ) J Values Note: Airflow for ThetaJA values is measured in linear feet per minute (lfpm). Symbol Parameter Conditions1 1. TA = 0 °C to 70 °C, V SUP = 3.3V. Min2 2. Not tested. Guaranteed by characterization. Typical Max2 Unit RPU Pull-up equivalent resistance VPIN =0V nn −30% nn nn+30% K Ω Symbol Parameter Conditions1 1. TA = 0 °C to 70 °C, V SUP = 3.3V. Min2 2. Not tested. Guaranteed by characterization. Typical Max2 Unit RPD Pull-down equivalent resistance VPIN =VSUP nn −30% nn nn+30% K Ω VPIN = 0.17 VSUP 3 3. For strap pins only. nn −50% K Ω VPIN = 0.8 VSUP 3 nn −48% K Ω Package Type ThetaJA@0 lfpm ThetaJA@225 lfpm ThetaJA@500 lfpm ThetaJC 128 PQFP 47 35.8 31.1 14.9 |
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