SN7438DR Texas Instruments - Yeehing Electronics

4-ch, 2-input, 4.75-V to 5.25-V bipolar NAND gates with open-collector outputs

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More Information

These devices contain four independent 2-input NAND buffer gates with open-collector outputs. The open-collector outputs require pull-up resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate high VOH levels.