Emitter coupled logic circuit having fuse programmable latch/reg

Details Emitter coupled logic circuit having fuse programmable latch/reg Emitter coupled logic circuit having fuse programmable latch/reg

1986-12-05

1988-02-16

Moffitt, James W.

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Fusible

365179, 307455, G11C 1140

Patent

active

047259795

ABSTRACT:
An emitter coupled logic circuit includes a bypass circuit which provides a conductive path for current when a programmable fuse is blown, so that input data is transmitted independently of the state of a clock signal. In one implementation, the circuit takes a register configuration having a master section and a slave section, each incorporating a programmable fuse. When the fuse in just one section is intact, the circuit serves as a clocked latch. When both fuses are blown, the bypass circuit is enabled so that the register functions as a combinatorial circuit which produces an output signal dependent on the input signal without reference to a clock signal.

REFERENCES:
patent: 4099070 (1978-07-01), Reinert
patent: 4464735 (1984-08-01), Toyoda et al.

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