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JPS57147332A - Input circuit - Google Patents

Input circuit

Info

Publication number
JPS57147332A
JPS57147332A JP56031695A JP3169581A JPS57147332A JP S57147332 A JPS57147332 A JP S57147332A JP 56031695 A JP56031695 A JP 56031695A JP 3169581 A JP3169581 A JP 3169581A JP S57147332 A JPS57147332 A JP S57147332A
Authority
JP
Japan
Prior art keywords
inverter
trs
series
gates
input terminal
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
JP56031695A
Other languages
Japanese (ja)
Inventor
Koichiro Okumura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56031695A priority Critical patent/JPS57147332A/en
Publication of JPS57147332A publication Critical patent/JPS57147332A/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
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
    • H03K19/094—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors
    • H03K19/0944—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors using MOSFET or insulated gate field-effect transistors, i.e. IGFET
    • H03K19/09441—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors using MOSFET or insulated gate field-effect transistors, i.e. IGFET of the same canal type
    • H03K19/09443—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors using MOSFET or insulated gate field-effect transistors, i.e. IGFET of the same canal type using a combination of enhancement and depletion transistors

Landscapes

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

Abstract

PURPOSE:To raise the threshold voltage of an inverter by inputting an input signal to the inverter through a series of enhancement type FETs whose drains and gates are connected. CONSTITUTION:Transistors (TR) E11-E16 (enhancement type) whose drains and gates are connected, and TRD11 (depletion type) as a resistance element are connected in series, and the source of the TRE16 is connected to the input terminal of an inverter composed of TRs E17 and D12. When a voltage applied to the input terminal I is higher than the threshold voltages of the TRs E11-E16 connected to a diode and that of the inverter, the TRE17 turns on. The number of the series-connected TRs E11-E16 is so determined that the threshold voltage of the circuit is higher than a supply voltage Vcc to the inverter.
JP56031695A 1981-03-05 1981-03-05 Input circuit Pending JPS57147332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56031695A JPS57147332A (en) 1981-03-05 1981-03-05 Input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56031695A JPS57147332A (en) 1981-03-05 1981-03-05 Input circuit

Publications (1)

Publication Number Publication Date
JPS57147332A true JPS57147332A (en) 1982-09-11

Family

ID=12338206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56031695A Pending JPS57147332A (en) 1981-03-05 1981-03-05 Input circuit

Country Status (1)

Country Link
JP (1) JPS57147332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61103319A (en) * 1984-10-26 1986-05-21 Nec Corp Multi-value input circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110536A (en) * 1974-02-08 1975-08-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110536A (en) * 1974-02-08 1975-08-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61103319A (en) * 1984-10-26 1986-05-21 Nec Corp Multi-value input circuit

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