JPS5484937A - Protection system for tristate gate - Google Patents
Protection system for tristate gateInfo
- Publication number
- JPS5484937A JPS5484937A JP15338177A JP15338177A JPS5484937A JP S5484937 A JPS5484937 A JP S5484937A JP 15338177 A JP15338177 A JP 15338177A JP 15338177 A JP15338177 A JP 15338177A JP S5484937 A JPS5484937 A JP S5484937A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- voltage
- fed
- power supply
- tristate
- 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
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE: To prevent the damage of tristate gate on power supply application, by resetting the latch circuit when the power supply voltage reaches given value, outputting high level signal from the NAND gate, and controlling the control terminal voltage of the tristate gate.
CONSTITUTION: When the power supply is applied, the voltage at the junction of the resistor 6 and the capacitor 7 is gradually started, and this voltage is fed to the reset terminal of the latch circuit 4 via the diode 8. Further, when the power supply voltage reaches a given value, since the reset terminal voltage is at a low level, the circuit 4 is reset and the low level signal is inputted to the NAND gate 5, and the gate 5 outputs high level signal. This signal is fed to the control terminals B1, B2 and B3 of the tristate gates 2-1, 2-2 and 2-3 and the voltage fed to the control terminal after that is controlled with the control signal fed to the gate 5. Thus, the destruction which may be caused on mains application can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15338177A JPS5484937A (en) | 1977-12-20 | 1977-12-20 | Protection system for tristate gate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15338177A JPS5484937A (en) | 1977-12-20 | 1977-12-20 | Protection system for tristate gate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5484937A true JPS5484937A (en) | 1979-07-06 |
Family
ID=15561215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15338177A Pending JPS5484937A (en) | 1977-12-20 | 1977-12-20 | Protection system for tristate gate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484937A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01303826A (en) * | 1988-05-31 | 1989-12-07 | Nec Corp | Digital signal transmission circuit for multiplexing highway bus |
-
1977
- 1977-12-20 JP JP15338177A patent/JPS5484937A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01303826A (en) * | 1988-05-31 | 1989-12-07 | Nec Corp | Digital signal transmission circuit for multiplexing highway bus |
JP2513273B2 (en) * | 1988-05-31 | 1996-07-03 | 日本電気株式会社 | Digital signal transmission circuit in multiplexed highway bus |
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