Integrated Input Level Conversion Circuit For Bipolar Circuits
Original Publication Date: 1979-Jun-01
Included in the Prior Art Database: 2005-Feb-20
Depending upon the kind of technology used, the logic circuits marketed at present require particular, but often different, input levels. For standardized transistor-transistor logic (TTL) circuits, for example, the switching levels are between 0 and 5 V at a threshold of about 1.5 V. To obtain smaller power delay products, the trend has been to develop circuits which operate at a substantially lower supply voltage. Accordingly, their switching levels are lower than in the usual TTL technology.