| 摘要 |
PURPOSE:To obtain a dynamic range sufficient to drive by a low voltage by providing respectively a signal transmission circuit using an inverted Darlington connection between the 1st and 2nd input circuits and two constant current sources. CONSTITUTION:A signal inputted from input terminals 6 and 20 is fed to cross coupling type differential switching circuits 11, 12, 13, 14 by signal transmission circuits 33, 35, 36, 37; 34, 39, 40, 41, 42 of the 1st and 2nd inverted Darlington connection, and when a high and a low level voltage are applied respectively to terminals 24, 25 of transistors (TRs) 26, 27, TRs 11, 14 are activated and TRs 12, 13 are cut off, and when the signal inputted from the input terminal 20 results in applying a low and a high level voltage to the terminals 24, 25, the signal inputted from the input terminal 6 is outputted to an output terminal 22. |
