The logic devices that are most commonly used to drive a wired- AND circuit are:
A) open- collector TTL devices.
B) standard TTL output totem- pole devices.
C) CMOS devices.
D) MOS devices.

Question

Quizplus · Accepted Answer

Open-collector TTL devices are most commonly used to drive a wired-AND circuit because they allow multiple outputs to be connected together so that the circuit behaves as an AND gate. When any of the outputs is low, the combined output is low; only when all outputs are high does the combined output go high. This is due to the nature of open-collector outputs, which can either be in a floating state (when the transistor is off) or pulled to ground (when the transistor is on), but cannot drive the line high by themselves, thus requiring an external pull-up resistor. This characteristic makes them ideal for wired-AND configurations.

The Logic Devices That Are Most Commonly Used to Drive