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JPS5634234A - Buffer circuit - Google Patents

Buffer circuit

Info

Publication number
JPS5634234A
JPS5634234A JP11070379A JP11070379A JPS5634234A JP S5634234 A JPS5634234 A JP S5634234A JP 11070379 A JP11070379 A JP 11070379A JP 11070379 A JP11070379 A JP 11070379A JP S5634234 A JPS5634234 A JP S5634234A
Authority
JP
Japan
Prior art keywords
voltage
circuit
power source
input
transient state
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
JP11070379A
Other languages
Japanese (ja)
Inventor
Kenji Tsuruta
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 JP11070379A priority Critical patent/JPS5634234A/en
Publication of JPS5634234A publication Critical patent/JPS5634234A/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
    • H03K19/00307—Modifications for increasing the reliability for protection in bipolar transistor circuits

Landscapes

  • Logic Circuits (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)

Abstract

PURPOSE:To obtain a buffer circuit where noise is prevented from being generated even in the transient state of applying of a DC power source voltage for the logic system driven by the same DC voltage power source. CONSTITUTION:Buffer circuit 30 is provided which consists of inverter circuit 11 driven by DC voltage power source 13 and NAND gate circuit 31, and the logic signal from another system is input to circuit 11. The input terminal where the output of circuit 11 is input, Zener diode ZD connected backward to voltage power source 13, and the input terminal where the voltage between diode ZD and resistance R41 connected across the earth is input are provided in NAND gate circuit 31. When the voltage of voltage power source 13 is applied through switch 14, the circuit is so controlled that the potential at the second input terminal may be the ground level until the DC voltage exceeds the brackdown voltage of diode ZD in this transient state, thus preventing generation of noise in the transient state.
JP11070379A 1979-08-30 1979-08-30 Buffer circuit Pending JPS5634234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11070379A JPS5634234A (en) 1979-08-30 1979-08-30 Buffer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11070379A JPS5634234A (en) 1979-08-30 1979-08-30 Buffer circuit

Publications (1)

Publication Number Publication Date
JPS5634234A true JPS5634234A (en) 1981-04-06

Family

ID=14542308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11070379A Pending JPS5634234A (en) 1979-08-30 1979-08-30 Buffer circuit

Country Status (1)

Country Link
JP (1) JPS5634234A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189263A (en) * 1982-04-28 1983-11-04 Hitachi Chem Co Ltd Coating fluid for sio2 film formation
EP0173148A2 (en) * 1984-08-29 1986-03-05 Fujitsu Limited A logic circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58189263A (en) * 1982-04-28 1983-11-04 Hitachi Chem Co Ltd Coating fluid for sio2 film formation
JPS6358867B2 (en) * 1982-04-28 1988-11-17
EP0173148A2 (en) * 1984-08-29 1986-03-05 Fujitsu Limited A logic circuit

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