| 摘要 |
A semiconductor integrated circuit such as an LSI circuit for use as a semiconductor static memory is fabricated on one chip and can handle signals on different interface levels. The semiconductor integrated circuit has ECL and CMOS input buffers which can be selected or simultaneously connected by a selector switch and ECL and CMOS output buffers which can be selected or simultaneously connected by a selector switch. The semiconductor integrated circuit with the selectively usable input and output buffers serves as either one of integrated circuits of different interface types. When the ECL input buffer and the CMOS output buffer are selected, an ECL-to-CMOS level converter and a sense amplifier may be implemented by one circuit block.
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