Diode-HBT-Logic Circuits Monolithically Integrable with ECL/CML Circuits

Keh Chung Wang, Steve M. Beccue, Mau-Chung Chang, Randall B. Nubling, Arthur M. Cappon, Tom C.T. Tsen, Dong Ming Chen, Peter M. Asbeck, Chung Y. Kwok

Research output: Contribution to journalArticle

3 Scopus citations


This paper describes a novel logic approach, diode-HBT logic (DHL), that is implemented with GaAlAs/GaAs HBT's and Schottky diodes to provide high-density and low-power digital circuit operation. This logic family has been realized with the same technology used to produce ECL/CML circuits. We have demonstrated the logic operation with a 19-stage ring oscillator and a frequency divider. A gate delay of 160 ps was measured with 1.1 mW of power per gate. The divider worked properly up to 6 GHz. Layouts of a DHL flip-flop and divider have shown that circuit area and transistor count can be reduced by about a factor of 3, relative to ECL/CML circuits. The new logic approach allows monolithic integration of highspeed ECL/CML circuits with high-density DHL circuits.

Original languageEnglish
Pages (from-to)1372-1378
Number of pages7
JournalIEEE Journal of Solid-State Circuits
Issue number10
StatePublished - 1 Oct 1992

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    Wang, K. C., Beccue, S. M., Chang, M-C., Nubling, R. B., Cappon, A. M., Tsen, T. C. T., Chen, D. M., Asbeck, P. M., & Kwok, C. Y. (1992). Diode-HBT-Logic Circuits Monolithically Integrable with ECL/CML Circuits. IEEE Journal of Solid-State Circuits, 27(10), 1372-1378. https://doi.org/10.1109/4.156440