Two state synchronizer

Details Two state synchronizer Two state synchronizer

1986-02-20

1987-05-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307269, 307481, 307530, H03K 513, H03L 700, H03D 1300

Patent

active

046635467

ABSTRACT:
A two stage synchronizer circuit for synchronizing an asynchronous input signal with a local clock signal includes a reference inverter for generating a reference signal, a first sense amplifier for amplifying the difference between the reference signal and the asynchronous input signal, buffer inverters coupled to the output on the sense amplifier, a second sense amplifier coupled to the output of the buffer inverters, and an output inverter for delivering the desired synchronized signal. The reference inverter and the first and second buffer inverters have the same switch point so as to substantially reduce the probability of the generation of a meta-stable output. Furthermore, the first and second sense amplifiers and output inverter also have the same switch point as the reference inverter.

REFERENCES:
patent: 4469964 (1984-09-01), Guttag et al.
patent: 4504748 (1985-03-01), Oritani
patent: 4558241 (1985-12-01), Suzuki et al.

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