发明名称 |
Data output circuit for semiconductor device with level shifter and method for outputting data using the same |
摘要 |
A data output circuit for a semiconductor device with a level shifter and a method for outputting data using the same. The data output circuit comprises an output buffer for receiving and latching an input data signal with a first voltage range in response to a clock control signal to provide a pair of output data signals, a high-impedance controller/level shifter circuit for outputting high-impedance drive data for the control of a high-impedance state through a pair of output lines according to a first logic state of a high-impedance control signal and for receiving the output data signal pair from the output buffer according to a second logic state of the high-impedance control signal and transferring pull-up and pull-down output data signals with a second voltage range through the output lines, and an output driver for maintaining a data output terminal at the high impedance state in response to the high-impedance drive data from the high-impedance controller/level shifter circuit and for performing an output driving operation in response to the pull-up and pull-down output data signals from the high-impedance controller/level shifter circuit to output final data externally through the data output terminal. A data output speed and a high-impedance transition speed are improved and an excellent driving capability is obtained.
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申请公布号 |
US6501306(B1) |
申请公布日期 |
2002.12.31 |
申请号 |
US20000676047 |
申请日期 |
2000.09.28 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM SOO-HWAN;SUH YOUNG-HO |
分类号 |
H03K19/0175;G11C7/10;H03K19/00;H03K19/0185;H03K19/094;(IPC1-7):H03B1/00;H03K3/00 |
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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