Programmable array logic with shared product terms

Details Programmable array logic with shared product terms Programmable array logic with shared product terms

1985-09-19

1987-02-17

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072021, 307466, H03K 19086

Patent

active

046441913

ABSTRACT:
A programmable logic circuit comprises a Programmable Array Logic (PAL) circuit in which individual product terms may be shared simultaneously by one or more of the circuit outputs. The product terms are selectively connected to the circuit outputs by programmable elements (such as a fusible link) to increase design flexibility. Isolating devices are provided in series with the programmable elements to allow for the simultaneous product term sharing.

REFERENCES:
patent: 3975623 (1976-08-01), Weinberger
patent: 4124899 (1978-11-01), Birkner et al.
patent: 4245324 (1981-01-01), Machol et al.
patent: 4409499 (1983-10-01), Zapisek et al.
patent: 4433331 (1984-02-01), Kollaritsch
patent: 4554640 (1985-11-01), Wong et al.
"Programmable Array Logic--PAL32R16 and HAL32R16" by Monolithic Memories.

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