JPS5662421A - Input circuit - Google Patents

Input circuit

Info

Publication number
JPS5662421A
JPS5662421A JP13961579A JP13961579A JPS5662421A JP S5662421 A JPS5662421 A JP S5662421A JP 13961579 A JP13961579 A JP 13961579A JP 13961579 A JP13961579 A JP 13961579A JP S5662421 A JPS5662421 A JP S5662421A
Authority
JP
Japan
Prior art keywords
input
inverter
low level
channel mosfet
state
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
JP13961579A
Other languages
Japanese (ja)
Inventor
Toru Kuwabara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13961579A priority Critical patent/JPS5662421A/en
Publication of JPS5662421A publication Critical patent/JPS5662421A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference

Landscapes

  • Logic Circuits (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To increase the antinoise characteristics, by providing a means which is controlled with clock pulse in open state of a switch and compulsively makes the input of an inverter. CONSTITUTION:With a switch 2 in off-state, the input of an inverter 3 is held at a low level, and the output terminal is kept at a high level. Further, this output is fed to the gate of an (n) channel MOSFET 5 to turn on it. Accordingly, the input of the inverter 3 is kept at a low level with more sure way. The 2nd (n) channel MOSFET 8 is connected in parallel with a resistance 4 and a n channel MOSFET 5, and clock pulses are input to the gate. Every time when clock pulses are raised to a high level, the 2nd (n) channel MOSFFT 8 is at on-state and the input of the inverter 3 is made to a low level, allowing to obtain the input circuit having high resistance to noise.
JP13961579A 1979-10-29 1979-10-29 Input circuit Pending JPS5662421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13961579A JPS5662421A (en) 1979-10-29 1979-10-29 Input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13961579A JPS5662421A (en) 1979-10-29 1979-10-29 Input circuit

Publications (1)

Publication Number Publication Date
JPS5662421A true JPS5662421A (en) 1981-05-28

Family

ID=15249410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13961579A Pending JPS5662421A (en) 1979-10-29 1979-10-29 Input circuit

Country Status (1)

Country Link
JP (1) JPS5662421A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143923A (en) * 1981-02-28 1982-09-06 Seiko Instr & Electronics Ltd Switch circuit
JPS596621A (en) * 1982-07-02 1984-01-13 Citizen Watch Co Ltd Input circuit of switch
JPS59229926A (en) * 1983-06-10 1984-12-24 Mitsubishi Electric Corp Semiconductor integrated circuit device
JPH04229719A (en) * 1990-11-06 1992-08-19 Mitsubishi Electric Corp Pull-up resistor control input circuit and output circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143923A (en) * 1981-02-28 1982-09-06 Seiko Instr & Electronics Ltd Switch circuit
JPH033966B2 (en) * 1981-02-28 1991-01-21 Seiko Instr & Electronics
JPS596621A (en) * 1982-07-02 1984-01-13 Citizen Watch Co Ltd Input circuit of switch
JPS59229926A (en) * 1983-06-10 1984-12-24 Mitsubishi Electric Corp Semiconductor integrated circuit device
JPH04229719A (en) * 1990-11-06 1992-08-19 Mitsubishi Electric Corp Pull-up resistor control input circuit and output circuit

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