Load controlled ECL transient driver.

摘要

An ECL transient driver discharges a capacitive load (19) at the output of an emitter follower with a pulse whose amplitude and duration is determined by the charge on the load (19). A pull-up transistor (28) is coupled to an output terminal (29) for selectively supplying a voltage thereto in response to a first signal from a logic circuit (11). A pull-down transistor (31) is coupled to the output terminal (29) for selectively sinking a current therefrom in response to a second signal. A comparator circuit (17) is coupled to the pull-down transistor (31), the logic circuit (11), and the output terminal (29), for selectively providing the second signal in response to the first signal and an output voltage on the output terminal (29).