ECL input buffer for BiCMOS

Details ECL input buffer for BiCMOS ECL input buffer for BiCMOS

1992-01-10

1993-06-01

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307454, 307455, 307446, H03K 19092, H03K 19086

Patent

active

052162982

ABSTRACT:
An ECL buffer circuit includes an input portion for receiving an input signal at an ECL level, a current switch portion and an output portion. The input portion includes a bipolar transistor (Q1), a level-shift diode (D1) and a constant current source (CS1). The current switch portion includes a first and a second switch circuits and a constant current source (CS2). Each switch circuit includes a resistor (R1, R2) and a bipolar transistor (Q2, Q3). The output portion includes a first and a second output circuits and a constant current source (CS3). Each output circuit includes an emitter follower transistor (Q4, Q5) and a bipolar transistor (Q6, Q7). The first output circuit receives an input signal from the input portion, and the second output circuit receives a reference voltage (V.sub.BB). A by-pass resistor (R3, R4) is connected between the base and the emitter of an emitter follower transistor (Q4, Q5) of each output circuit. When the output signal changes from a second level to a first level, the output signal thereby rapidly changes to a predetermined voltage by the emitter follower transistor (Q4, Q5) at first, then changes to a first level by way of the by-pass operation of the by-pass resistor (R3, R4).

REFERENCES:
patent: 4649294 (1987-03-01), McLaughlin
patent: 4791320 (1988-12-01), Kawata et al.
patent: 4804868 (1989-02-01), Masuda et al.
patent: 4958094 (1990-09-01), Ishii et al.

Affiliated with

Also associated with

Rating

ECL input buffer for BiCMOS does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with ECL input buffer for BiCMOS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ECL input buffer for BiCMOS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1817148