发明名称 |
SEMICONDUCTOR OUTPUT CIRCUIT, EXTERNAL OUTPUT SIGNAL GENERATION METHOD, AND SEMICONDUCTOR DEVICE |
摘要 |
A semiconductor output circuit, an external output signal generation method and a semiconductor device that suppress variation in an external output signal caused by a decrease in power supply voltage. An output section changes electric potential of an external output signal EB according to a change in electric potential of an internal input signal A from ground to VDD or from VDD to the ground. A differential section outputs an output signal corresponding to the external output signal EB and a predetermined reference signal VREF. The differential section functions as a voltage follower so that the electric potential of the external output signal EB will correspond to the predetermined reference signal VREF. As a result, variation in output voltage VOL at a low voltage side of the external output signal EB is suppressed.
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申请公布号 |
US2008218214(A1) |
申请公布日期 |
2008.09.11 |
申请号 |
US20080042780 |
申请日期 |
2008.03.05 |
申请人 |
FUJITSU LIMITED;FUJITSU ELECTRONICS INC. |
发明人 |
MORII MASAHARU |
分类号 |
H03K19/0185 |
主分类号 |
H03K19/0185 |
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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