NL505 – Flip Flop
The NL505 can be operated either as a “set-reset” flip-flop or as a “toggled” complementing flip-flop. This makes it useful in setting up conditional and “single-shot” stimuli, and testing logic outputs for the presence of pulses, logic levels etc.
It has three inputs, Set, Complement and Clear, and two outputs (Q and Q’) all of which drive or are driven from TTL logic (ie +5V and 0V). A LED indicator is illuminated when the Q output is at a high level.