Defective element disabling circuit having a laser-blown fuse

Details Defective element disabling circuit having a laser-blown fuse Defective element disabling circuit having a laser-blown fuse

1987-10-22

1989-05-09

Hecker, Stuart N.

Static information storage and retrieval

Read/write circuit

Bad bit

36523006, 307451, 3072021, G11C 700, G11C 2900, H03K 19094

Patent

active

048294810

ABSTRACT:
A decoder circuit for disabling a defective element in a circuit having redundant replacement elements employs a fuse on a signal path through the decoder circuit from a selection device to a low-impedance output device and a weak default circuit, such as a pull-up transistor, for forcing the state of the output circuit to a low-impedance default state when the fuse is blown.

REFERENCES:
patent: 4587638 (1986-05-01), Isobe et al.
patent: 4606013 (1986-08-01), Yoshimoto

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