JPS54147768A - Protection circuit for ic - Google Patents
Protection circuit for icInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52137244A (en) * | 1976-05-12 | 1977-11-16 | Fujitsu Ltd | Complementary mos driving circuit |
-
1978
- 1978-05-11 JP JP5580878A patent/JPS54147768A/en active Pending
Patent Citations (1)
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)
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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