In certain applications, this last case may not be required, in which case the data transmission direction can be controlled by a single line E1, and E2 is connected to E1 through a logic inverter. Sign in to download full-size image Figure 10.26. Bi-directional tri-state connection of a...
An inverter 28 couples the circuit control terminal 26 to the circuit disable terminal 24. A first diode D2 has its anode connected to the collector of the phase splitter transistor Q7 and its cathode connected to the circuit disable terminal 24. A second diode D3 has its anode connected ...
The state-keeper circuit 130 includes first inverter 131, second inverter 133 and resistive element 134. Elements 131, 133 and 134 are programmably-couplable to form a weak latch whose state can be overridden by the output of longline driver (H_LLD) 160. Resistive element 134 may be an ...