Fast latching flip-flop

Details Fast latching flip-flop Fast latching flip-flop

1987-12-14

1988-10-11

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307442, 307443, H03K 3204, H03K 1716

Patent

active

047773880

ABSTRACT:
A fast latching flip-flop has a transparent latch master section with an input amplifier, an output latch, a current source connected to provide current for the input amplifier and the output latch, and a switch for applying the current from the current source to either the input amplifier or the output latch. A slave section is connected to the output latch to transfer the data from the output latch to the output of the fast latching flip-flop. A delay transistor is inserted between the switch and the input amplifier to add delay in the turn-off of the input amplifier. Additional delay is attained by connecting a plurality of diode-connected transistors to the junction of the delay transistor and the switch. The result is a reduction of the metastable region between the turn-off of the input amplifier and the turn-on of the output latch.

REFERENCES:
patent: 3358238 (1967-12-01), Shapiro et al.
patent: 4303838 (1981-12-01), Lambert
patent: 4532440 (1985-07-01), Barre
patent: 4591737 (1986-05-01), Campbell

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