The present invention relates to a level translator which translates TTL level signals to ECL level. The translating speed is enhanced by making the input circuit of the level translator which receives the TTL data signal composed of an emitter coupled pair such that the circuit does not act in saturation...http://www.google.com/patents/US5025180?utm_source=gb-gplus-sharePatent US5025180 - TTL to ECL voltage level translator
