JPS5586222A - Level shift circuit - Google Patents

Level shift circuit

Info

Publication number
JPS5586222A
JPS5586222A JP16427778A JP16427778A JPS5586222A JP S5586222 A JPS5586222 A JP S5586222A JP 16427778 A JP16427778 A JP 16427778A JP 16427778 A JP16427778 A JP 16427778A JP S5586222 A JPS5586222 A JP S5586222A
Authority
JP
Japan
Prior art keywords
diode
fet2
constant
shift circuit
level shift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16427778A
Other languages
Japanese (ja)
Inventor
Katsuhiko Suyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16427778A priority Critical patent/JPS5586222A/en
Publication of JPS5586222A publication Critical patent/JPS5586222A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
    • H03K19/018507—Interface arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Manipulation Of Pulses (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To stabilize the operation of a level shift circuit easily by making the saturation current value of a diode much greater than the constant current of constant-current supply FET by decreasing the width or thickness of a semiconductor layer constituting the diode less than those of two FETs. CONSTITUTION:As a constant-current supply, FET2 serves, and FET1 operates as a source follower with loads of FET2 and diode 3. An input voltage applied to the gate of FET1 is level-shifted by a voltage drip across diode 3 and then outputted from a series-connection point between diode 3 and FET2. In this case, the width or thickness of a semiconductor layer constituting diode 3 is decreased less than those of FETs 1 and 2 to fix the saturation current value of diode 3 much greater than the constant-current value of FET2. Consequently, the operation of a level shift circuit can be stabilized in an extremely-easy method.
JP16427778A 1978-12-23 1978-12-23 Level shift circuit Pending JPS5586222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16427778A JPS5586222A (en) 1978-12-23 1978-12-23 Level shift circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16427778A JPS5586222A (en) 1978-12-23 1978-12-23 Level shift circuit

Publications (1)

Publication Number Publication Date
JPS5586222A true JPS5586222A (en) 1980-06-28

Family

ID=15790023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16427778A Pending JPS5586222A (en) 1978-12-23 1978-12-23 Level shift circuit

Country Status (1)

Country Link
JP (1) JPS5586222A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145237A (en) * 1982-02-22 1983-08-30 Matsushita Electric Ind Co Ltd Logical circuit for field effect transistor
JPS5917724A (en) * 1982-07-20 1984-01-30 Matsushita Electric Ind Co Ltd Semiconductor integrated circuit
JPH0332444U (en) * 1990-08-15 1991-03-29
JP2011101351A (en) * 2009-10-09 2011-05-19 Semiconductor Energy Lab Co Ltd Logic circuit and display device having the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145237A (en) * 1982-02-22 1983-08-30 Matsushita Electric Ind Co Ltd Logical circuit for field effect transistor
JPS5917724A (en) * 1982-07-20 1984-01-30 Matsushita Electric Ind Co Ltd Semiconductor integrated circuit
JPH0332444U (en) * 1990-08-15 1991-03-29
JP2011101351A (en) * 2009-10-09 2011-05-19 Semiconductor Energy Lab Co Ltd Logic circuit and display device having the same
US8786313B2 (en) 2009-10-09 2014-07-22 Semiconductor Energy Laboratory Co., Ltd. Logic circuit and display device having the same
JP2015019386A (en) * 2009-10-09 2015-01-29 株式会社半導体エネルギー研究所 Semiconductor device

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