JPH0172729U - - Google Patents
Info
- Publication number
- JPH0172729U JPH0172729U JP1987168723U JP16872387U JPH0172729U JP H0172729 U JPH0172729 U JP H0172729U JP 1987168723 U JP1987168723 U JP 1987168723U JP 16872387 U JP16872387 U JP 16872387U JP H0172729 U JPH0172729 U JP H0172729U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- terminal
- mos transistor
- diode
- output terminal
- 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
- 230000006378 damage Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案のＩＣの保護回路の回路図、第
２図は従来の同回路の回路図を示す。
１……入力端子、２……制御端子、３……出力
端子、６，７，８……スイツチング用ＭＯＳトラ
ンジスタ、９，１０……トランスミツシヨンゲー
ト用ＭＯＳトランジスタ、１２……第１の電源端
子、１３……第２の電源端子、１４，１５……保
護用ダイオード、１６……負荷。
FIG. 1 shows a circuit diagram of a protection circuit for an IC according to the present invention, and FIG. 2 shows a conventional circuit diagram of the same circuit. 1... Input terminal, 2... Control terminal, 3... Output terminal, 6, 7, 8... MOS transistor for switching, 9, 10... MOS transistor for transmission gate, 12... First power supply Terminal, 13...Second power supply terminal, 14, 15...Protection diode, 16...Load.
Claims (1)
２の電源、内部に前記各端子に接続されたスイツ
チング用ＭＯＳトランジスタと前記出力端子及び
電源端子に各々接続された保護素子を備えたＩＣ
において、前記第１又は第２の一方の電源端子と
電源との間に直列に第１のダイオードを接続する
と共に前記一方の電源端子とアース間に第２のダ
イオードを接続し、前記一方の電源端子の電源供
給の遮断時前記ＩＣ内部のＭＯＳトランジスタの
破壊を防止することを特徴としたＩＣ保護回路。 An IC comprising a control signal terminal, an input terminal, an output terminal, first and second power supplies, a switching MOS transistor internally connected to each of the terminals, and a protection element connected to the output terminal and the power supply terminal, respectively.
A first diode is connected in series between one of the first or second power supply terminal and the power supply, and a second diode is connected between the one power supply terminal and the ground, and the one of the power supply An IC protection circuit that prevents destruction of a MOS transistor inside the IC when power supply to a terminal is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987168723U JPH0172729U (en) | 1987-11-04 | 1987-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987168723U JPH0172729U (en) | 1987-11-04 | 1987-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0172729U true JPH0172729U (en) | 1989-05-16 |
Family
ID=31458150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987168723U Pending JPH0172729U (en) | 1987-11-04 | 1987-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0172729U (en) |
-
1987
- 1987-11-04 JP JP1987168723U patent/JPH0172729U/ja active Pending