JPS5717232A - Input circuit - Google Patents

Input circuit

Info

Publication number
JPS5717232A
JPS5717232A JP9249680A JP9249680A JPS5717232A JP S5717232 A JPS5717232 A JP S5717232A JP 9249680 A JP9249680 A JP 9249680A JP 9249680 A JP9249680 A JP 9249680A JP S5717232 A JPS5717232 A JP S5717232A
Authority
JP
Japan
Prior art keywords
potential
vbe
emitter
power supply
vil
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
JP9249680A
Other languages
Japanese (ja)
Inventor
Shinji Saito
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 JP9249680A priority Critical patent/JPS5717232A/en
Publication of JPS5717232A publication Critical patent/JPS5717232A/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
    • H03K19/01—Modifications for accelerating switching
    • H03K19/013—Modifications for accelerating switching in bipolar transistor circuits

Landscapes

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

Abstract

PURPOSE:To increase the switching speed, by providing a generating means of a given potential between the emitter of the 2nd transistor (TR) of npn type in which a load element is inserted between the 1st TR of pnp type and the power supply voltage application point and the base is connected to the emitter of the 1st TR, and the reference potential point. CONSTITUTION:Since the emitter of a PNP TR21 is connected to a positive polarity power supply via a load resistor 21, it is conductive at all times. When an input signal In is at a low potential VIL, the collector potential of the TR21 is at VIL+VBE. On the other hand, when the input signal is at high potential VIH, the collector potential of the TR21 is at V1H+VBE. Since the NPN TR21 is not conductive if the base potential is not more than VB+VBE, where VB is the output voltage of the constant power supply voltage 23, the switching control of the TR12 can be made, by setting the VB from V1L to V1H.
JP9249680A 1980-07-07 1980-07-07 Input circuit Pending JPS5717232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9249680A JPS5717232A (en) 1980-07-07 1980-07-07 Input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9249680A JPS5717232A (en) 1980-07-07 1980-07-07 Input circuit

Publications (1)

Publication Number Publication Date
JPS5717232A true JPS5717232A (en) 1982-01-28

Family

ID=14055900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9249680A Pending JPS5717232A (en) 1980-07-07 1980-07-07 Input circuit

Country Status (1)

Country Link
JP (1) JPS5717232A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601923A (en) * 1983-06-17 1985-01-08 Nec Corp Integrated injection logic circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601923A (en) * 1983-06-17 1985-01-08 Nec Corp Integrated injection logic circuit

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