JPS57178424A - Semiconductor integrated circuit device - Google Patents

Semiconductor integrated circuit device

Info

Publication number
JPS57178424A
JPS57178424A JP6383781A JP6383781A JPS57178424A JP S57178424 A JPS57178424 A JP S57178424A JP 6383781 A JP6383781 A JP 6383781A JP 6383781 A JP6383781 A JP 6383781A JP S57178424 A JPS57178424 A JP S57178424A
Authority
JP
Japan
Prior art keywords
trtr2
integrated circuit
semiconductor integrated
circuit device
emitter
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
JP6383781A
Other languages
Japanese (ja)
Inventor
Hideo Sugiyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6383781A priority Critical patent/JPS57178424A/en
Publication of JPS57178424A publication Critical patent/JPS57178424A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads

Landscapes

  • Bipolar Transistors (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To facilitate assembling operation and to reduce cost by providing a transistor for surge protection at the inside of a semiconductor integrated circuit device. CONSTITUTION:A surge protecting TRTr2 is provided at the inside of a semiconductor integrated circuit device 11. This TRTr2 is brought under conduction control by being connected to a power source Vcc at its base; and the collector is connected to an output terminal OUT, and the emitter to an earth point GND. Consequently, when counter electromotive force is generated at a coil L, the emitter-side potential of the TRTr2 rises, so this TRTr2 turns on the discharge a surge voltage to the earth point.
JP6383781A 1981-04-27 1981-04-27 Semiconductor integrated circuit device Pending JPS57178424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6383781A JPS57178424A (en) 1981-04-27 1981-04-27 Semiconductor integrated circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6383781A JPS57178424A (en) 1981-04-27 1981-04-27 Semiconductor integrated circuit device

Publications (1)

Publication Number Publication Date
JPS57178424A true JPS57178424A (en) 1982-11-02

Family

ID=13240856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6383781A Pending JPS57178424A (en) 1981-04-27 1981-04-27 Semiconductor integrated circuit device

Country Status (1)

Country Link
JP (1) JPS57178424A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0805554B1 (en) * 1996-04-30 2003-07-30 STMicroelectronics S.r.l. Circuit for the controlled recycle without oscillation of a discharge current from an inductive load

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323554A (en) * 1976-08-14 1978-03-04 Bosch Gmbh Robert Circuit for leaking inductive load breaking current

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323554A (en) * 1976-08-14 1978-03-04 Bosch Gmbh Robert Circuit for leaking inductive load breaking current

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0805554B1 (en) * 1996-04-30 2003-07-30 STMicroelectronics S.r.l. Circuit for the controlled recycle without oscillation of a discharge current from an inductive load

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