| 摘要 |
PROBLEM TO BE SOLVED: To transfer signals/data at high speed with low current consumption according to an active termination system and reduce the area occupied by an output drive circuit. SOLUTION: An output drive circuit (1) is composed of a MOS transistor (13) for driving an output node (14) according to internal read data (/RD), a termination controlling P-channel MOS transistor (11) to be selectively turned to a conductive state according to the internal read data during a non-conductive state of the output driving MOS transistor, and a P-channel MOS transistor (12) turned to the conductive state at least during the inactive state of the output drive circuit (1) for pulling the output node up to a power source voltage level. The data transfer is executed in an open-drain system, and the P-channel MOS transistor is utilized as a terminating transistor. COPYRIGHT: (C)2004,JPO
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