发明名称 |
IDENTIFICATION OF REPAIRED INTEGRATED CIRCUITS |
摘要 |
<p>INDENTIFICATION OF REPAIRED INTEGRATED CIRCUITS A circuit for providing an identification signal indicative of whether or not an integrated circuit has been repaired includes a circuit which operates at potentials outside the normal range of the integrated circuit. The circuit includes at least one transistor T1 serially con nected between a TTL pin 10 of the integrated circuit and a fuse F1. The fuse F1 is also connected to a potential source VCC. If the integrated circuit is repaired the fuse F1 is opened, and consequently, application of a potential outside the normal range will cause current to flow if fuse F1 has not been opened, and cause no current to flow if fuse F1 has been opened.</p> |
申请公布号 |
CA1188426(A) |
申请公布日期 |
1985.06.04 |
申请号 |
CA19830423955 |
申请日期 |
1983.03.18 |
申请人 |
FAIRCHILD CAMERA AND INSTRUMENT CORPORATION |
发明人 |
VARSHNEY, RAMESH C.;STRAIN, ROBERT J. |
分类号 |
H01L21/3205;G11C29/00;G11C29/04;H01L21/82;H01L21/822;H01L23/52;H01L23/525;H01L23/544;H01L27/04;(IPC1-7):H01L21/66 |
主分类号 |
H01L21/3205 |
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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