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JPS5776924A - Interface circuit - Google Patents

Interface circuit

Info

Publication number
JPS5776924A
JPS5776924A JP55152274A JP15227480A JPS5776924A JP S5776924 A JPS5776924 A JP S5776924A JP 55152274 A JP55152274 A JP 55152274A JP 15227480 A JP15227480 A JP 15227480A JP S5776924 A JPS5776924 A JP S5776924A
Authority
JP
Japan
Prior art keywords
current
signal
resistor
constituting
interface circuit
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
JP55152274A
Other languages
Japanese (ja)
Inventor
Katsuhiko Goto
Isao Fukushima
Hideo Nishijima
Yasunori Kobori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55152274A priority Critical patent/JPS5776924A/en
Publication of JPS5776924A publication Critical patent/JPS5776924A/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
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H03K19/018—Coupling arrangements; Interface arrangements using bipolar transistors only
    • H03K19/01806—Interface arrangements
    • H03K19/01812—Interface arrangements with at least one differential stage
    • 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
    • H03K19/01—Modifications for accelerating switching
    • H03K19/013—Modifications for accelerating switching in bipolar transistor circuits

Landscapes

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

Abstract

PURPOSE:To quicken the discharge of on-base storage charge or floating capacitance of a transistor (TR) and to achieve high speed operation, by constituting an interface circuit with a current mirror circuit driven with opposite two input signals. CONSTITUTION:From output terminals 2, 22 of a differential amplifier of an analog circuit 4, a signal superimposing an opposite signal voltage on the same DC voltage is outputted. An emitter of TRs 25, 24 inputted with this signal is connected to a diode 27 and a TR26 constituting a current mirror respectively via resistors 28, 29. When the base potential of the TR25 is higher than the base potential of the TR24, a current flowing to the resistor 28 is more than the current flowing to the resistor 29, and the on-base storage charge of a TR14 is absorbed with the current of both differences and the TR14 turns off.
JP55152274A 1980-10-31 1980-10-31 Interface circuit Pending JPS5776924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152274A JPS5776924A (en) 1980-10-31 1980-10-31 Interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152274A JPS5776924A (en) 1980-10-31 1980-10-31 Interface circuit

Publications (1)

Publication Number Publication Date
JPS5776924A true JPS5776924A (en) 1982-05-14

Family

ID=15536916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152274A Pending JPS5776924A (en) 1980-10-31 1980-10-31 Interface circuit

Country Status (1)

Country Link
JP (1) JPS5776924A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180218A (en) * 1984-02-27 1985-09-14 Rohm Co Ltd Interface circuit
US4797583A (en) * 1983-12-20 1989-01-10 Hitachi, Ltd. Level converting circuit for converting voltage levels, including a current amplifying arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102234A (en) * 1974-01-10 1975-08-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50102234A (en) * 1974-01-10 1975-08-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797583A (en) * 1983-12-20 1989-01-10 Hitachi, Ltd. Level converting circuit for converting voltage levels, including a current amplifying arrangement
JPS60180218A (en) * 1984-02-27 1985-09-14 Rohm Co Ltd Interface circuit

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