Low power clock generator

Details Low power clock generator Low power clock generator

1982-11-15

1985-01-29

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307481, 307482, 307578, H03K 1706, H03K 5135, H03K 1710, H03K 19096

Patent

active

044968523

ABSTRACT:
A clock generator circuit for producing with very little power dissipation an output clock signal having levels determined by positive and negative power supply levels from an input clock signal having levels determined by the positive power supply level and ground. In a low state of the input clock signal, an upper or first transistor of an output transistor pair connected in series between positive and negative power supply levels is turned off by applying a ground level to the base thereof, while the lower or second transistor of the output transistor pair is turned off by applying a positive potential to its base. When the input clock signal makes a transition from the low state to the high state, a bootstrap capacitor is charged between the positive and negative power supply levels to provide a boosted positive voltage to turn on the upper transistor. While the bootstrap capacitor is charging, the base of the lower transistor is lightly grounded to partially turn it on. When the charge on the bootstrap capacitor has reached a predetermined level, the base of the first transistor is taken to the negative power supply level through an inverting transistor, the base of which also receives the boosted voltage developed across the bootstrap capacitor. By using a fully dynamic circuit arrangement, only a very small amount of power is required for operating the circuit.

REFERENCES:
patent: 3774055 (1973-11-01), Bapat
patent: 3872321 (1975-03-01), Matsue
patent: 4010453 (1977-03-01), Lewis
patent: 4021682 (1977-05-01), Elmer et al.
patent: 4090096 (1978-05-01), Nagami
patent: 4165541 (1979-08-01), Varshney et al.
patent: 4219743 (1980-08-01), Milln et al.
patent: 4276487 (1981-06-01), Arzubi et al.
patent: 4449066 (1984-05-01), Aoyama et al.

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