发明名称 |
TTL to MOS converter with power supply noise rejection |
摘要 |
An input buffer for coupling TTL logic circuits to CMOS logic circuits, the buffer being used to convert between standard TTL logic signals and CMOS logic signals. The buffer includes a first inverter circuit and a second inverter circuit coupled in a cascade (output of first inverter coupled to the input of the second inverter). The first inverter includes two resistors (Rcc and Rss); the Rcc resistor couples the first inverter to a first reference voltage, which is usually a power supply voltage rail, and Rss couples the first inverter to a second reference voltage. The first inverter also includes a capacitor coupled in parallel with that inverter. Power supply noise is isolated from the first inverter so that the buffer has better immunity from noise than the prior art.
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申请公布号 |
US4783603(A) |
申请公布日期 |
1988.11.08 |
申请号 |
US19870001354 |
申请日期 |
1987.01.08 |
申请人 |
CYPRESS SEMICONDUCTOR CORPORATION |
发明人 |
GOFORTH, JOSEPH M.;YOUNG, ELVAN S. |
分类号 |
H03K19/003;H03K19/0185;(IPC1-7):H03K17/16;H03K19/092 |
主分类号 |
H03K19/003 |
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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