CMOS/ECL level converting circuit

Details CMOS/ECL level converting circuit CMOS/ECL level converting circuit

1993-05-10

1994-10-04

Hudspeth, David R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307455, 307559, H03K 19092

Patent

active

053529413

ABSTRACT:
A bipolar transistor, connected between a high voltage source and a low voltage source, has a base connected to an input terminal. A clamp circuit is connected between the high voltage source and the base of the transistor. A first resistor is connected in parallel with the clamp circuit. An output terminal is connected to the emitter of the bipolar transistor. In one embodiment, the clamp circuit is formed by two diodes connected in series. In another embodiment, a second resistor for limiting current is provided between the input terminal and the base of the transistor. In yet another embodiment, the resistance value of the first resistor is smaller than the ON resistance of a pMOS transistor in the output circuit of a CMOS circuit connected to the input terminal. A high level from the output terminal produces a high level ECL level output with a potential that depends on V.sub.BE of the bipolar transistor, while a low level output depends on the level of the clamp circuit. High speed operation is obtained without fluctuation of the duty ratio and reduction of high potential level of the output signal from the output terminal.

REFERENCES:
patent: 3755693 (1973-08-01), Lee
patent: 3958136 (1976-05-01), Schroeder
patent: 4698527 (1987-10-01), Matsumoto
patent: 4808858 (1989-02-01), Stoops
patent: 4849660 (1989-07-01), Hayashi et al.
patent: 4970417 (1990-11-01), Kubota
patent: 5115148 (1992-05-01), Kammerl et al.
patent: 5216298 (1993-06-01), Ohba et al.

Affiliated with

Also associated with

Rating

CMOS/ECL level converting circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CMOS/ECL level converting circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CMOS/ECL level converting circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-583647