Circuit arrangement using emitter coupled logic and...

Details Circuit arrangement using emitter coupled logic and... Circuit arrangement using emitter coupled logic and...

H - Electricity

03

K

328/158, 365/5

H03K 19/086 (2006.01) H03K 19/018 (2006.01)

Patent

CA 1164959

RCA 74,641 Abstract of the Disclosure In a circuit using integrated injection logic and emitter coupled logic circuits, a unique arrangement is used to facilitate the interface between various circuit sections. An embodiment in an AM/FM digital tuner circuit is shown. Specifically, the integrated injection logic circuits are stacked with the current supply for the integrated injection logic stack being directly connected to the same power supply operating potential as the current supply for the emitter coupled logic circuits. Such arrangement reduces the magnitude of the potential difference between logic signal voltage levels between the respective logic circuits. Representative interface circuits between integrated injection logic circuits and emitter coupled logic circuits are disclosed. An interlace circuit using emitter coupled logic is disclosed for fast level shift between upper and lower level circuits within the integrated injection logic stack.

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