| 摘要 |
Integrated circuit devices include an input pin coupled to a data line, through which an input signal is received. An input circuit is coupled to the input pin. The input circuit transfers the input signal to internal circuitry of the integrated circuit device. The data line termination circuit is coupled between the input pin and the input circuit, and reduces ringing of the input signal. The data line termination circuit includes an attenuation circuit coupled to the input pin, that reduces overshoot of the input signal. A charge/discharge circuit is coupled between the attenuation circuit and the input circuit, and charges the undershoots of the input signal with the power supply when a level of the input signal changes from logic low level to high level, and discharges the undershoots of the input signal to ground when the level of the input signal changes from the logic high level to the low level.
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