JPS5480064A - Logic circuit - Google Patents

Logic circuit

Info

Publication number
JPS5480064A
JPS5480064A JP14786577A JP14786577A JPS5480064A JP S5480064 A JPS5480064 A JP S5480064A JP 14786577 A JP14786577 A JP 14786577A JP 14786577 A JP14786577 A JP 14786577A JP S5480064 A JPS5480064 A JP S5480064A
Authority
JP
Japan
Prior art keywords
input
power source
voltage
circuit
collector
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
JP14786577A
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 JP14786577A priority Critical patent/JPS5480064A/en
Publication of JPS5480064A publication Critical patent/JPS5480064A/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 ensure the setting of the output potential of the current switching logical circuit based on the lower power voltage regardless of the voltage variation of the higher power source, by stabilizing the DC voltage level of the output signal drawn out from the collector of the input variation of the power source. CONSTITUTION:The circuit consists of the following units: input TrQ1 and Q2 with the base used as input signal application terminal 3 and 4; reference TrQ3 with the base used as the reference voltage application terminal 5; load R1 and R2 connected to each collector of the above TRQ's; the current switching logical circuit containing the emitter driving current regulating means to the common emitter circuit of the input and reference Tr's; and the logic circuit containing the lvel converter circuit comprisifng TrQ5 the emitter whose base is connected to the collector of the input or reference Tr is connected to the 1st power source via resistance r4. As a result, the output potential of the current switching logical circuit can be set based on the lower power voltage regardless of the voltage variation of the higher power source by stabilizing the DC level of the output signal drawn out from the collecdtor of the input or reference Tr against the voltage variation of the 1st power source.
JP14786577A 1977-12-08 1977-12-08 Logic circuit Pending JPS5480064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14786577A JPS5480064A (en) 1977-12-08 1977-12-08 Logic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14786577A JPS5480064A (en) 1977-12-08 1977-12-08 Logic circuit

Publications (1)

Publication Number Publication Date
JPS5480064A true JPS5480064A (en) 1979-06-26

Family

ID=15439985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14786577A Pending JPS5480064A (en) 1977-12-08 1977-12-08 Logic circuit

Country Status (1)

Country Link
JP (1) JPS5480064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57155830A (en) * 1981-03-23 1982-09-27 Hitachi Ltd Comparator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57155830A (en) * 1981-03-23 1982-09-27 Hitachi Ltd Comparator

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