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JPS54156463A - Logic circuit - Google Patents

Logic circuit

Info

Publication number
JPS54156463A
JPS54156463A JP6525078A JP6525078A JPS54156463A JP S54156463 A JPS54156463 A JP S54156463A JP 6525078 A JP6525078 A JP 6525078A JP 6525078 A JP6525078 A JP 6525078A JP S54156463 A JPS54156463 A JP S54156463A
Authority
JP
Japan
Prior art keywords
logic
trq1
terminals
fed
changed
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
JP6525078A
Other languages
Japanese (ja)
Inventor
Yoji Hirano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6525078A priority Critical patent/JPS54156463A/en
Publication of JPS54156463A publication Critical patent/JPS54156463A/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
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
    • H03K19/082—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using bipolar transistors
    • H03K19/088—Transistor-transistor logic

Landscapes

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

Abstract

PURPOSE:To obtain the logic circuit of excellent interruption characteristics, by providing the diode in which the anode is connected to the base of Tr and the cathode is to the input terminal, with the logic circut consisting of transistor Tr the conduction of which is controlled depending on the logic input. CONSTITUTION:The circuit consists of the schottky clamped Tr Q1 to Q4, Q6 and TrQ5, and schottky barrier diodes D1 to D6. TrQ1 is ON and Q2,Q3 are OFF when low level is fed to either of the terminals 3 and 4, to maintain Q4 and Q5 OFF. When high level is fed to the terminals 3 and 4, TrQ1 is OFF and Q2 is ON, the collector potential decreases to keep Q4,Q5 OFF and Q3 ON. With this state, if the terminal 3 is changed to lower level, since Q1 is ON and Q2 is OFF, the base charge of Q3 is discharged via the resistor R5 and Q3 starts disconduction. D3 is changed from the back bias to the forward bias, the base charge of Q3 is rapidly discharged through D3 to improve the interrupting performance of Q3. Thus, the conductive performance is not injured and excellent interruption characteristics can be obtained.
JP6525078A 1978-05-30 1978-05-30 Logic circuit Pending JPS54156463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6525078A JPS54156463A (en) 1978-05-30 1978-05-30 Logic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6525078A JPS54156463A (en) 1978-05-30 1978-05-30 Logic circuit

Publications (1)

Publication Number Publication Date
JPS54156463A true JPS54156463A (en) 1979-12-10

Family

ID=13281461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6525078A Pending JPS54156463A (en) 1978-05-30 1978-05-30 Logic circuit

Country Status (1)

Country Link
JP (1) JPS54156463A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127731A (en) * 1979-03-26 1980-10-02 Hitachi Ltd Logical operation circuit
JPS5830233A (en) * 1981-08-17 1983-02-22 Fujitsu Ltd Transistor circuit
JPS6027223A (en) * 1983-07-20 1985-02-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Driver circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134549A (en) * 1978-04-10 1979-10-19 Fujitsu Ltd Logical operation circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54134549A (en) * 1978-04-10 1979-10-19 Fujitsu Ltd Logical operation circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127731A (en) * 1979-03-26 1980-10-02 Hitachi Ltd Logical operation circuit
JPS5830233A (en) * 1981-08-17 1983-02-22 Fujitsu Ltd Transistor circuit
JPS6027223A (en) * 1983-07-20 1985-02-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Driver circuit
JPH0336448B2 (en) * 1983-07-20 1991-05-31 Intaanashonaru Bijinesu Mashiinzu Corp

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