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Definition of "Three State" |
[3-State] See Tri-State. / A three state, or Tri State™, output has three electrical states One, zero, and "Hi Z," or "open." The hi Z state is a high impedance state in which the output is disconnected, leaving the signal open, to be driven by another device (or to be pulled up or down by a resistor provided to prevent an undefined state). High impedance schemes such as three state are commonly used for a bus, in which several devices can be selected to drive the bus. Tri State™ is a trademark of National Semiconductor. |
Definition of "Three-State" |
A three-state, or Tri-State?, output has three electrical states: One, zero, and "Hi-Z," or "open." The hi-Z state is a high-impedance state in which the output is disconnected, leaving the signal open, to be driven by another device (or to be pulled up or down by a resistor provided to prevent an undefined state). High-impedance schemes such as three-state are commonly used for a bus, in which several devices can be selected to drive the bus Tri-State? is a trademark of National Semiconductor. |
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