JPS54147768A - Protection circuit for ic - Google Patents

Protection circuit for ic

Info

Publication number
JPS54147768A
JPS54147768A JP5580878A JP5580878A JPS54147768A JP S54147768 A JPS54147768 A JP S54147768A JP 5580878 A JP5580878 A JP 5580878A JP 5580878 A JP5580878 A JP 5580878A JP S54147768 A JPS54147768 A JP S54147768A
Authority
JP
Japan
Prior art keywords
channel
power supply
resistor
reduce
destruction
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
JP5580878A
Other languages
Japanese (ja)
Inventor
Takehiro Ishikawa
Norio Takahashi
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP5580878A priority Critical patent/JPS54147768A/en
Publication of JPS54147768A publication Critical patent/JPS54147768A/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
    • H03K19/00315—Modifications for increasing the reliability for protection in field-effect 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)
  • Electric Clocks (AREA)
  • Electronic Switches (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To prevent the channel destruction, by providing the static electricity destruction prevention circuit on the power supply line, in reducing the size of the fundamental element of C-MOS circuit to reduce the power consumption of electronic watch IC. CONSTITUTION:To reduce the size of the fundamental transistor consisting of the gate oxide film 21, source 22, and drain 23, it is required to reduce the channel length L and the channel width W. But, when the length L is reduced, the dielectric strength is also lowered. Thus, in the C-MOS inverter consisting of the P channel transistor 34 and N channel transistor 35, the resistor 37 is connected in series with the VDD power supply other than the diodes 31, 32 and resistor 33 for gate protection, and the diode 36 is connected between the middle tap of the resistor 37 and the VSS power supply, allowing to prevent the channel destruction due to static electricity applied on the power supply line.
JP5580878A 1978-05-11 1978-05-11 Protection circuit for ic Pending JPS54147768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5580878A JPS54147768A (en) 1978-05-11 1978-05-11 Protection circuit for ic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5580878A JPS54147768A (en) 1978-05-11 1978-05-11 Protection circuit for ic

Publications (1)

Publication Number Publication Date
JPS54147768A true JPS54147768A (en) 1979-11-19

Family

ID=13009213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5580878A Pending JPS54147768A (en) 1978-05-11 1978-05-11 Protection circuit for ic

Country Status (1)

Country Link
JP (1) JPS54147768A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358629U (en) * 1986-06-21 1988-04-19
JPH03250918A (en) * 1990-02-28 1991-11-08 Fujitsu Ltd Misfet logic circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137244A (en) * 1976-05-12 1977-11-16 Fujitsu Ltd Complementary mos driving circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137244A (en) * 1976-05-12 1977-11-16 Fujitsu Ltd Complementary mos driving circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6358629U (en) * 1986-06-21 1988-04-19
JPH0418660Y2 (en) * 1986-06-21 1992-04-27
JPH03250918A (en) * 1990-02-28 1991-11-08 Fujitsu Ltd Misfet logic circuit

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