Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Patent
1997-04-24
1999-12-14
Lam, Tuan T.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
327203, H03K 3289
Patent
active
060022841
ABSTRACT:
A D flip-flop circuit has two current paths supply the output signal of this flip-flop. A push-pull circuit including an inverter and a transmission gate clocked in a first phase supplies the output of the D flip-flop in a first output path. A slave latch connected to the transmission gate having an output clocked in a second phase opposite to the first phase serves as the second path to the output. In one alternative embodiment the master latch includes a transmission gate clocked in the second phase serving as input and a pair of cross coupled inverters serving as latch. The master latch may include a feedback P-type MOSFET. The slave latch may includes two slave latch inverters and a transmission gate clocked in the second phase connected to the output of the D flip-flop output. In a second alternative, an appropriately clocked tri-state inverter replaces the second slave latch inverter and the transmission gate. The master latch and the push-pull circuit may be combined and include two inverters, two transmission gates and a feedback P-type MOSFET. In a third embodiment the push-pull circuit consists of an appropriately clocked tri-state inverter.
REFERENCES:
patent: 4692634 (1987-09-01), Fang et al.
patent: 5107137 (1992-04-01), Kinugasa et al.
patent: 5189315 (1993-02-01), Akata
patent: 5289518 (1994-02-01), Nakao
patent: 5497114 (1996-03-01), Shimozono et al.
patent: 5525921 (1996-06-01), Callahan
patent: 5612632 (1997-03-01), Mahant-Shetti et al.
Hill Anthony M.
Ko Uming
Donaldson Richard L.
Lam Tuan T.
Laws Gerald E.
Marshall, Jr. Robert D.
Texas Instruments Incorporated
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