U.S. patents available from 1976 to present.
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Speed enhancement technique for CMOS circuits

Patent 4985643 Issued on January 15, 1991. Estimated Expiration Date: Icon_subject April 24, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3603810

3700916

Write strobe generator for clock synchronized memory
Patent #: 4476401
Issued on: 10/09/1984
Inventor: Lin

Schmitt trigger circuit
Patent #: 4490627
Issued on: 12/25/1984
Inventor: Moench ,   et al.

TTL to CMOS input buffer
Patent #: 4490633
Issued on: 12/25/1984
Inventor: Noufer ,   et al.

Delay circuit for gate-array LSI
Patent #: 4700089
Issued on: 10/13/1987
Inventor: Fujii ,   et al.

Logic state transition detection circuit for CMOS devices
Patent #: 4728820
Issued on: 03/01/1988
Inventor: Lee

Edge set/reset latch circuit having low device count Patent #: 4806786
Issued on: 02/21/1989
Inventor: Valentine

Inventor

Application

No. 515769 filed on 04/24/1990

US Classes:

326/17, ACCELERATING SWITCHING326/97, MOSFET326/121CMOS

Examiners

Primary: Miller, Stanley D.
Assistant: Bertelson, David R.

Attorney, Agent or Firm

International Classes

H03K 019/003
H03K 019/017
H03K 017/04
H03K 017/687
290
443
542
549
550

Abstract

A speed enhancement technique for CMOS circuits is disclosed. In the series of logic stages, nodes in the signal path of a pulse are set by preceding logic stages, then reset by feedback from subsequent logic stages. This eliminates the capacitive burden of resetting any given node from the input signal to allow substantially all of the input signal to be employed in setting the nodes to an active state rather than wasting part of the signal in turning off the reset path. The technique is illustrated as applied to RAM circuits.

Other References

  • Towler, Fred, et al., "A 128k 6.5ns Access/5ns Cycle CMOS ECL Static RAM"; Digest of Technical Papers; 1989 IEEE International Solid-State Circuits Conference; pp. 30-33
  • Krambeck et al., "High Speed Compact Circuits Using CMOS", IEEE Journal of Solid State Circuits, vol. SC-17, No. 3, pp. 614-619, Jun. 1982
  • Adams, R. Dean, et al., "FAM 16.4: An 11ns 8Kx18 CMOS Static RAM"; Digest of Technical Papers, 1988 IEEE International Solid-State Circuits Conference; pp. 242-243, 386
  • Shoji, M., "FET Scaling in Domino CMOS Gates," IEEE Journal of Solid-State Circuits (Oct. 1985), SC-20(5):1067-1071
  • Oklobdzija, V. G., et al., "Design-Performance Trade-Offs in CMOS Domino Logic," IEEE 1985 Custom Integrated Circuits Conference, CH2157-6/85/0000-0334, pp. 334-337
  • Pretorius, J. A., et al., "Optimization of Domino CMOS Logic and Its Applications to Standard Cells," IEEE 1984 Custom Integrated Circuits Conference, CH1987-7/84/000-0150, pp. 150-153
  • Pretorius, J. A., et al., "Analysis and Design Optimization of Domino CMOS Logic with Application to Standard Cells," IEEE Journal of Solid-State Circuits (Apr. 1985) SC-20(2):523-530
  • Hofmann, M., et al., "A Domino CMOS Logic Synthesis System", 1985 International Symposium on Circuits and Systems (Jun. 1985) 2:4111.varies.414
  • Oklobdzija, V. G., et al., "Design-Performance Trade-Offs in CMOS-Domino Logic," IEEE Journal of Solid-State Circuits (Apr. 1986) SC-21(2):304-306
  • Pretorius, J. A., et al., "Charge Redistribution and Noise Margins in Domino CMOS Logic," IEEE Transactions on Circuits and Systems (Aug. 1986) CAS-33(8):786-793
  • Pretorius, J. A., et al., "Testability Enhancement of Domino CMOS Logic," Electronics Letters (Apr. 1985) 21(8):336-337
  • Oklobdzija, V. G., et al., "On Testability of CMOS-Domino Logic," IEEE 14th Int. Conf. on Fault-Tolerant Computing (1984) 0731-3071/84/0000/0050, pp. 50-55
  • Zhang, C., "An Improvement for Domino CMOS Logic," Comput. & Elect. Engng. (1987) 13(1):53-59
  • Pretorius, J. A., et al., "Latched Domino CMOS Logic," IEEE Journal of Solid-State Circuits (Aug. 1986) SC-21(4):514-522
  • Pretorius, J. A., et al., "Latched Domino CMOS Logic," Electronics Letters (Mar. 1985) 21(7):263-264
  • Murphy, B. T., et al., "Twin Tubs, Domino Logic, CAD Speed Up 32-bit Processor," Electronics (Oct. 1981), pp. 106-111
  • Heller, L. G., et al., "Cascade Voltage Switch Logic: A Different CMOS Logic Family," 1984 IEEE International Solid-State Circuits Conference (Feb. 1984) 0193-6530/84/0000/0016, pp. 16-1
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