| 摘要 |
An integrated circuit is implemented in a low-voltage technology and has an output driver. The output driver has circuitry adapted to generate an output voltage at an output node (e.g., PAD in FIG. 1) based on an input voltage (e.g., A). Within the output driver, a transistor is configured to limit the drain-to-source voltage drop across another transistor to enable the integrated circuit to tolerate, at its output node, voltages of magnitude up to two times the operating voltage of the integrated circuit. The invention enables low-voltage integrated circuits to be interfaced with other circuitry implemented in a relatively high-voltage technology, without suffering the adverse effects that can otherwise result in the low-voltage circuitry from such interfacing.
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