Volentine Francos & Whitt PLLC
Input/output buffer having analog and digital input modes
An input/output buffer is operative in an analog mode and a digital mode. The buffer includes a pad, a digital signal line which includes a transmission gate connected to the pad, an analog signal line connected to the pad, an analog/digital mode controller which sets an output level of the digital signal line in the analog mode, and a transmission gate controller which controls the transmission gate when a signal voltage of the pad exceeds a reference voltage.
Samsung Electronics Co., Ltd.
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Yun-Woo Dae-Gyu Boo-Yung
Lee Kim Huh