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SM72375 Datasheet(PDF) 10 Page - Texas Instruments |
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SM72375 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 20 page SM72375 SNIS155D – NOVEMBER 2010 – REVISED APRIL 2013 www.ti.com 3.0 OUTPUT SHORT CIRCUIT CURRENT The SM72375 has short circuit protection of 40 mA. However, it is not designed to withstand continuous short circuits, transient voltage or current spikes, or shorts to any voltage beyond the supplies. A resistor is series with the output should reduce the effect of shorts. For outputs which send signals off PC boards additional protection devices, such as diodes to the supply rails, and varistors may be used. 4.0 HYSTERESIS If the input signal is very noisy, the comparator output might trip several times as the input signal repeatedly passes through the threshold. This problem can be addressed by making use of hysteresis as shown below. Figure 25. Canceling the Effect of Input Capacitance The capacitor added across the feedback resistor increases the switching speed and provides more short term hysteresis. This can result in greater noise immunity for the circuit. Typical Applications UNIVERSAL LOGIC LEVEL SHIFTER The output of the SM72375 is the uncommitted drain of the output NMOS transistor. Many drains can be tied together to provide an output OR'ing function. An output pullup resistor can be connected to any available power supply voltage within the permitted power supply range. Figure 26. Universal Logic Level Shifter The two 1 k Ω resistors bias the input to half of the power supply voltage. The pull-up resistor should go to the output logic supply. Due to its wide operating range, the SM72375 is ideal for the logic level shifting applications. 10 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated Product Folder Links: SM72375 |
Similar Part No. - SM72375_16 |
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Similar Description - SM72375_16 |
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