JPS5541020A - Logic output circuit - Google Patents

Logic output circuit

Info

Publication number
JPS5541020A
JPS5541020A JP11384778A JP11384778A JPS5541020A JP S5541020 A JPS5541020 A JP S5541020A JP 11384778 A JP11384778 A JP 11384778A JP 11384778 A JP11384778 A JP 11384778A JP S5541020 A JPS5541020 A JP S5541020A
Authority
JP
Japan
Prior art keywords
circuit
output
logic
terminal
input
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
JP11384778A
Other languages
Japanese (ja)
Inventor
Yoshinori Masuda
Kazunari Shimizu
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP11384778A priority Critical patent/JPS5541020A/en
Publication of JPS5541020A publication Critical patent/JPS5541020A/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
    • H03K19/003—Modifications for increasing the reliability for protection

Landscapes

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

Abstract

PURPOSE:To establish the logic output circuit having the protective function against short circuit between the output terminal and GND, by comparing the logic level of input and output of the logic circuit and controlling the swtich circuit interrupting power supply or ground by means of the output. CONSTITUTION:In normal operation, the switch circuit 4 is ON and power supply 6 is fed to the logic circuit 2. The signal given to the input terminal 1 is outputted to the output terminal 3 as the signal corresponding to the input signal with the circuit 2. If the terminal 3 is in error shortened to GND or other output terminal, the output logic of the terminal 3 and the input logic of the terminal 1 are compared at the comparison circuit 5. The output of the circuit 5 turns off the switch circuit 4 to interrupt the power supply 6 of the circuit 2 and to block excess current flowing to the circuit 2. Thus, with low cost element constitution, even if the output terminals are shortened, the logic output circuit not damaged can be established.
JP11384778A 1978-09-16 1978-09-16 Logic output circuit Pending JPS5541020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11384778A JPS5541020A (en) 1978-09-16 1978-09-16 Logic output circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11384778A JPS5541020A (en) 1978-09-16 1978-09-16 Logic output circuit

Publications (1)

Publication Number Publication Date
JPS5541020A true JPS5541020A (en) 1980-03-22

Family

ID=14622542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11384778A Pending JPS5541020A (en) 1978-09-16 1978-09-16 Logic output circuit

Country Status (1)

Country Link
JP (1) JPS5541020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305106A (en) * 1980-01-18 1981-12-08 Harris Corporation System for short circuit protection using electronic logic in a feedback arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305106A (en) * 1980-01-18 1981-12-08 Harris Corporation System for short circuit protection using electronic logic in a feedback arrangement

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