What is the function of a tri-state buffer?
The Tri-state Buffer is used in many electronic and microprocessor circuits as they allow multiple logic devices to be connected to the same wire or bus without damage or loss of data.
What are the three states of a tri-state buffer?
The tristate buffer, shown in Figure 2.40, has three possible output states: HIGH (1), LOW (0), and floating (Z).
What is a tri-state logic device?
From Wikipedia, the free encyclopedia. In digital electronics three-state, tri-state, or 3-state logic allows an output or input pin/pad to assume a high impedance state, effectively removing the output from the circuit, in addition to the 0 and 1 logic levels.
What is the difference between buffer and tri-state buffer?
A tri-state buffer is similar to a buffer, but it adds an additional “enable” input that controls whether the primary input is passed to its output or not. If the “enable” inputs signal is true, the tri-state buffer behaves like a normal buffer.
What is a tri-state inverter?
tri-state output (three-state output) An electronic output stage consisting of a logic gate, commonly an inverter or buffer, that exhibits three possible logic states, namely logic 1, logic 0, and an inactive (high-impedance or open-circuit) state.
What is high Z state?
Hi-Z (or High-Z or high impedance) refers to an output signal state in which the signal is not being driven. The signal is left open, so that another output pin (e.g. elsewhere on a bus) can drive the signal or the signal level can be determined by a passive device (typically, a pull-up resistor). Synonyms.
Which logic is the fastest of all the logic families?
Emitter-coupled-logic
Emitter-coupled-logic (ECL) is a BJT logic family that is generally considered the fastest logic available. ECL achieves its high-speed operation by employing a relatively small voltage swing and preventing the transistors from entering the saturation region.
What is the significance of high impedance state in Tri-State Gates?
If the “enable” input signal is false, the tri-state buffer passes a high impedance (or hi-Z) signal, which effectively disconnects its output from the circuit. Tri-state buffers are often connected to a bus which allows multiple signals to travel along the same connection.
