Level conversion circuitry for a semiconductor integrated circui

Details Level conversion circuitry for a semiconductor integrated circui Level conversion circuitry for a semiconductor integrated circui

1992-03-03

1993-09-14

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, H03K 1901

Patent

active

052452247

ABSTRACT:
In an input level converter for TTL-CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the input level converter can be lessened. Similarly, in an output level converter for CMOS-TTL level conversion (or other conversion from CMOS) for the internal logic block operating with the CMOS levels, an output transistor for executing the charge or discharge of the output load capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the output level converter can also be lessened.

REFERENCES:
patent: 3631528 (1971-12-01), Green
patent: 3879619 (1975-04-01), Pleshko
patent: 3958136 (1976-05-01), Schroeder
patent: 4278897 (1981-07-01), Ohno et al.
patent: 4280065 (1981-07-01), Minato et al.
patent: 4301383 (1981-11-01), Taylor
patent: 4425516 (1984-01-01), Wanlass
patent: 4689503 (1987-08-01), Suzuki et al.

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