4/24/2023 0 Comments Circuit coder tri stateWhen the output terminal of the tri-state logic block is low to high/high to low, the weak buffer is active and maintains the output terminal of the tri-state logic block weak high/low while the delay block turns off the pull high/low function of the tri-state logic block. If the 'enable' input signal is false, the tri-state buffer passes a high impedance (or hi-Z) signal. If the 'enable' inputs signal is true, the tri-state buffer behaves like a normal buffer. And the input terminal of the delay block is connected to the output terminal of the tri-state logic block while the output terminal of the delay block is fed back to the tri-state logic block. 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. An H-bridge is built with four switches (solid-state or mechanical). The term H-bridge is derived from the typical graphical representation of such a circuit. The input terminal and the output terminal of the weak buffer are connected to the output terminal of the tri-state logic block. H-bridges are available as integrated circuits, or can be built from discrete components. When OE signal is enabled, the output terminal of the tri-state I/O block is pulled high when the data is high while the output terminal is pulled low when the data is low. The input terminals of the tri-state logic block are connected to data and OE (output enable) signals. Ideal for coding tele-communication, transceiving, remote control and burglar alarm systems which use integrated circuits with tri-state coding systems. The tri-state I/O port comprises a tri-state logic block, a weak buffer and a delay block. Abstract: The present invention discloses a tri-state I/O port.
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