Title:
LEVEL SHIFT CIRCUIT
Document Type and Number:
Japanese Patent JP2993395
Kind Code:
B2
Abstract:
PURPOSE: To obtain a voltage shift circuit operable with high voltage by supplying a grounded correlation signal for an output encoding the same information as a high voltage correlation signal by an input.
CONSTITUTION: The level shift circuit 1 of voltage input signals S and SN show at least first and second high voltage levels and the circuit is composed of two branches, each of which consists of current modulators 6, 7, 9, 14, 15, 17 and signal converters 8 and 16. A current modulator is supplied with two signals of mutually opposite phases to generate current signals I7 and I15 being values depending on the level of each input signal and a signal converter converts a current signal to ground related voltage signals V1 and V2. The signal converter forms a signal terminating differential circuit 20 and the output 21 of the circuit 20 shows a low voltage digital signal which can be generated by a normal digital circuit and receives no influence by a noise or the fluctuation of supply voltage.
Inventors:
PIETORO MENITEI
ARUDO NOBETSURI
ARUDO NOBETSURI
Application Number:
JP11264895A
Publication Date:
December 20, 1999
Filing Date:
April 14, 1995
Export Citation:
Assignee:
ETSUSE JI ETSUSE TOMUSON MIKUROERETSUTORONIKA SPA
International Classes:
H03K19/0185; (IPC1-7): H03K19/0185
Domestic Patent References:
| JP63268303A | ||||
| JP3135220A | ||||
| JP1228212A | ||||
| JP60225068A |
Attorney, Agent or Firm:
Keiichi Yamamoto