| 摘要 |
PROBLEM TO BE SOLVED: To provide a tri-state buffer circuit that realizes high circuit integration of a semiconductor integrated circuit in spite of its small size. SOLUTION: The tri-state buffer circuit is provided with an AND means 12 that ANDs an input signal IN and a control signal OE and provides an output of the inverted AND result, a P-channel TR QP1 that has a gate receiving a signal outputted from the AND means, a source receiving a 1st power supply voltage, and provides an output of an output signl from a drain, a 1st N-channel TR QN1. that is in complementary connection with the P-channel TR, and a 2nd N-channel TR QN that supplies a current from the source of the 1st N-channel TR to a 2nd power supply according to a control signal.
|
