Integrated circuit having first and second internal circuits con

Details Integrated circuit having first and second internal circuits con Integrated circuit having first and second internal circuits con

1978-02-17

1980-10-21

Anagnos, Larry N.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307205, 307279, 307361, 307362, H03K 518, H03K 3353, H03K 1940

Patent

active

042296706

ABSTRACT:
In order to enable two different internal circuits to be controlled from one input pin of a C-MOS IC said pin is connected directly to an input of a first circuit and via the emitter-collector path of a transistor to the input of a second circuit. The base of this transistor is connected to one of the supply voltages, so that this transistor can conduct only when the voltage on said input pin is higher or lower than the positive or negative supply voltage respectively.

REFERENCES:
patent: 3579050 (1971-05-01), Basu et al.
patent: 3609411 (1971-09-01), Ma et al.
patent: 3851189 (1974-11-01), Moyer
patent: 3995171 (1976-11-01), Sonoda

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