JPS53142160A - Prevention circuit for static electricity breakage of ttl - Google Patents

Prevention circuit for static electricity breakage of ttl

Info

Publication number
JPS53142160A
JPS53142160A JP5641077A JP5641077A JPS53142160A JP S53142160 A JPS53142160 A JP S53142160A JP 5641077 A JP5641077 A JP 5641077A JP 5641077 A JP5641077 A JP 5641077A JP S53142160 A JPS53142160 A JP S53142160A
Authority
JP
Japan
Prior art keywords
ttl
static electricity
prevention circuit
breakage
electricity breakage
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
JP5641077A
Other languages
Japanese (ja)
Inventor
Masaaki Hoashi
Nobuhiko Ono
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5641077A priority Critical patent/JPS53142160A/en
Publication of JPS53142160A publication Critical patent/JPS53142160A/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
    • H03K19/00307—Modifications for increasing the reliability for protection in bipolar transistor circuits

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 secure an assured protection for Tr or TTL from the reverse polarity static electricity breakage voltage, by connecting a protective diode with the opposite polarity to the current flow direction of Tr between the emitter and the collector or the collector potential source terminal of the first-step Tr.
JP5641077A 1977-05-18 1977-05-18 Prevention circuit for static electricity breakage of ttl Pending JPS53142160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5641077A JPS53142160A (en) 1977-05-18 1977-05-18 Prevention circuit for static electricity breakage of ttl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5641077A JPS53142160A (en) 1977-05-18 1977-05-18 Prevention circuit for static electricity breakage of ttl

Publications (1)

Publication Number Publication Date
JPS53142160A true JPS53142160A (en) 1978-12-11

Family

ID=13026377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5641077A Pending JPS53142160A (en) 1977-05-18 1977-05-18 Prevention circuit for static electricity breakage of ttl

Country Status (1)

Country Link
JP (1) JPS53142160A (en)

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