发明名称 |
Composite circuit of bipolar transistors and MOS transistors and semiconductor integrated circuit device using the same |
摘要 |
A composite circuit device of bipolar transistors and MOS transistors has a series connection of an NPN transistor for pull-up and a PNP transistor for pull-down. The composite circuit device has independent base drive circuits so provided that the base of the NPN transistor for pull-up is electrically isolated from the base of the PNP transistor for pull-down during the on-off switching operation. The composite circuit device is also provided with base precharge circuitry for pre-charging the base of the PNP transistor during the off operation state thereof. A composite circuit is also provided with circuitry for enhancing the turn-on switching speed of the pull-down PNP transistor. Additionally, a composite circuit of bipolar transistors and MOS transistors is constituted by a switch having a high input impedance and low on-resistance which can be applied as a component of an electronic circuit.
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申请公布号 |
US5362998(A) |
申请公布日期 |
1994.11.08 |
申请号 |
US19940193643 |
申请日期 |
1994.02.07 |
申请人 |
HITACHI LTD. |
发明人 |
IWAMURA, MASAHIRO;MAEJIMA, HIDEO;WATANABE, ATSUO;MORI, KAZUTAKA |
分类号 |
H01L27/06;H01L21/8249;H03K17/56;H03K17/567;H03K19/013;H03K19/08;H03K19/0944;(IPC1-7):H03K19/02 |
主分类号 |
H01L27/06 |
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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