JPS5793732A - Multiinput logical circuit - Google Patents

Multiinput logical circuit

Info

Publication number
JPS5793732A
JPS5793732A JP17041880A JP17041880A JPS5793732A JP S5793732 A JPS5793732 A JP S5793732A JP 17041880 A JP17041880 A JP 17041880A JP 17041880 A JP17041880 A JP 17041880A JP S5793732 A JPS5793732 A JP S5793732A
Authority
JP
Japan
Prior art keywords
trs
level
current flowing
emitter
fluctuations
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
JP17041880A
Other languages
Japanese (ja)
Inventor
Fumihiko Sato
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 JP17041880A priority Critical patent/JPS5793732A/en
Publication of JPS5793732A publication Critical patent/JPS5793732A/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
    • H03K19/086—Emitter coupled logic

Landscapes

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

Abstract

PURPOSE:To reduce the fluctuations of potential at an emitter connecting point, by making a current flowing to an input gate transistor (TR) other than specified conditions when all the inputs are at low level smaller than a current flowing to this specified TR. CONSTITUTION:The level of an input signal voltage is made lower than the level of the signal voltage of TRs Q22, Q23, by decreasing the voltage level of a low level output signal of logical circuits 21, 24 of the prestage inputted to the base of input gate TRs Q21, Q24 through the increased load resistance of an output TR, for example, and giving it to the base of the TRs Q21, Q24. Thus, a current flowing to the TRs Q22, Q23 is far greater than that flowing to the TRs Q21, Q24, the entire emitter current is bisected into two TRs TRQ22, Q23 equally and the fluctuations of potential at an emitter common connecting point R can further be reduced than that using conventional systems.
JP17041880A 1980-12-03 1980-12-03 Multiinput logical circuit Pending JPS5793732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17041880A JPS5793732A (en) 1980-12-03 1980-12-03 Multiinput logical circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17041880A JPS5793732A (en) 1980-12-03 1980-12-03 Multiinput logical circuit

Publications (1)

Publication Number Publication Date
JPS5793732A true JPS5793732A (en) 1982-06-10

Family

ID=15904551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17041880A Pending JPS5793732A (en) 1980-12-03 1980-12-03 Multiinput logical circuit

Country Status (1)

Country Link
JP (1) JPS5793732A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131769A (en) * 1973-04-23 1974-12-17
JPS50102235A (en) * 1974-01-09 1975-08-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131769A (en) * 1973-04-23 1974-12-17
JPS50102235A (en) * 1974-01-09 1975-08-13

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