发明名称 |
Input/output circuit and integrated circuit apparatus including the same |
摘要 |
An input/output circuit includes an I/O node connected to a pull up and pull down circuit having a pull up and pull down transistors. Data is sent and received at through the I/O node. A level shifter provides voltages including a supply voltage and a high voltage higher than the supply voltage. A signal control circuit controls the voltage level applied to the pull up and pull down circuit. During a data input mode, data is received at the I/O node and the pull up transistor is biased at the high voltage to cut off the pull up transistor. During a data output mode, data is output at the I/O node and the pull down transistor pulls down the I/O node to ground when the output data is low, and the pull up transistor is activated when the output data is high.
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申请公布号 |
US8004311(B2) |
申请公布日期 |
2011.08.23 |
申请号 |
US20100714878 |
申请日期 |
2010.03.01 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM JOUNG YEAL;JUN YOUNG HYUN;KONG BAI SUN |
分类号 |
H03K19/0175 |
主分类号 |
H03K19/0175 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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