True TTL to true ECL bi-directional tristatable translator drive

Details True TTL to true ECL bi-directional tristatable translator drive True TTL to true ECL bi-directional tristatable translator drive

1989-03-03

1990-06-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307473, 307443, 307455, 307467, H03K 19092, H03K 19086, H03K 1900

Patent

active

049316729

ABSTRACT:
The present invention provides an integrated circuit that has both driver and receiver functions. The circuit of the present invention has two interrelated parts. The first part of the circuit converts true TTL signals to true ECL signals. The second part of the circuit accepts true ECL signals and drives a tri-state true TTL bus. The novel design of the present invention provides a common circuit that acts as an input reference for the circuit that converts true TTL signals to true ECL signals and as a tri-state clamp for the circuit that accepts true ECL signals and drives a tri-state true TTL bus. Using the same circuit components to perform functions in two separate circuits reduces the component count of the resulting circuit and increases the circuit's power/device count figure of merit.

REFERENCES:
patent: 4527079 (1985-07-01), Thompson
patent: 4654549 (1987-03-01), Hannington
patent: 4677320 (1987-06-01), Hannington

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