Circuital device for the power-on reset of digital integrated ci

Details Circuital device for the power-on reset of digital integrated ci Circuital device for the power-on reset of digital integrated ci

1987-11-25

1989-10-17

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307592, 307597, 307279, 307362, G11C 1100, H03K 301

Patent

active

048749656

ABSTRACT:
A power-on reset circuit for supplying a reset pulse when a supply voltage rises above a preset threshold includes a reference voltage generator connected between the supply voltage and ground for supplying a reference signal having a constant preset value when the supply voltage is greater than the preset threshold. A supply follower provides an input signal which follows the supply voltage with a preset reduction factor. A bistable comparator having a first input driven by the reference signal and a second input driven by the input signal switches from a first state to a second state when the input signal exceeds the reference signal.

REFERENCES:
patent: 3753011 (1973-08-01), Faggin
patent: 4309627 (1982-01-01), Tabata
patent: 4385245 (1983-05-01), Ulmer
patent: 4441039 (1984-04-01), Schuster
patent: 4585957 (1986-04-01), Ooms
patent: 4607178 (1986-08-01), Sugie et al.
patent: 4654547 (1987-03-01), Shaver
patent: 4695753 (1987-09-01), Pelgrom

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