High speed signal level converting circuit having a reduced cons

Details High speed signal level converting circuit having a reduced cons High speed signal level converting circuit having a reduced cons

1996-09-09

1998-08-04

Hudspeth, David R.

Electronic digital logic circuitry

Interface

Supply voltage level shifting

326 33, 326 34, 326 68, H03K 1716

Patent

active

057899428

ABSTRACT:
A level converting circuit includes a first power supply line of a high potential, a second power supply line of a low potential, a third power supply line of a potential lower than that of the first power supply line by some degree, and a first internal power supply line. The level converting circuit also includes an inverter circuit configured to output an output potential equal to that of the second power supply line when an input signal is equal to a potential of the third power supply line, and another output potential equal to that of the first power supply line when the input signal is equal to a potential of the second power supply line. Furthermore, the level converting circuit includes a switch circuit for supplying to the first internal power supply line the potential of the third power supply line when the input signal is equal to a potential of the third power supply line, and the potential of the first power supply line when the input signal is equal to the potential of the second power supply line.

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