Digital integrated circuit

Details Digital integrated circuit Digital integrated circuit

1978-12-15

1981-05-12

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307465, 324 73R, 371 24, H03K 1920

Patent

active

042674638

ABSTRACT:
A digital integrated circuit is provided with a maximum number of input and output terminals assigned for a normal operation mode and the number of terminals required for a function test is minimized. The integrated circuit is additionally provided with at least one control terminal, the functions of at least a part of the input and output terminals being determined in response to the logical level at the control terminal. Terminal utilization efficiency is further enhanced if the control terminal is connected to an inverter which is nonresponsive to the normal logic mode voltage range but which is responsive to a voltage outside the normal logic mode voltage range.

REFERENCES:
patent: 3818202 (1974-06-01), Ellison

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