JPS5669932A - Logic circuit - Google Patents

Logic circuit

Info

Publication number
JPS5669932A
JPS5669932A JP14667679A JP14667679A JPS5669932A JP S5669932 A JPS5669932 A JP S5669932A JP 14667679 A JP14667679 A JP 14667679A JP 14667679 A JP14667679 A JP 14667679A JP S5669932 A JPS5669932 A JP S5669932A
Authority
JP
Japan
Prior art keywords
level
output out
trq4
electric power
change
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
JP14667679A
Other languages
Japanese (ja)
Inventor
Toru Takahashi
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 JP14667679A priority Critical patent/JPS5669932A/en
Publication of JPS5669932A publication Critical patent/JPS5669932A/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)
  • Electronic Switches (AREA)
  • Pulse Circuits (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To make it possible to obtain a stable time lag only in fall with small electric power consumtion and a small number of elements, by detecting the output change of an electric power switching type logic circuit, and by delaying only a change at the fall by controlling the current level. CONSTITUTION:When input voltage VIN is at a low level, output OUT' is at a high level and the level applied to TRQ4 connected via transistor TRQ6 constituting an emitter follower also increases, so that TRQ3 and TRQ4 will turn off and on respectively. Next, as voltage VIN rises in level gradually, output OUT' falls in level and output OUT rises to flow electric current through TRQ1 while the current flowing through TRQ2 is reduced. The electric current having flowed to TRQ4 is shunt to TRQ3 and the total current flowing to TRs Q1 and Q2 is reduced, so that although output OUT rises in level, it will take a long time for output OUT to change to the low level. Consequently, a stable time lag only in rise can be obtained with small electric power consumption and a small number of elements.
JP14667679A 1979-11-13 1979-11-13 Logic circuit Pending JPS5669932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14667679A JPS5669932A (en) 1979-11-13 1979-11-13 Logic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14667679A JPS5669932A (en) 1979-11-13 1979-11-13 Logic circuit

Publications (1)

Publication Number Publication Date
JPS5669932A true JPS5669932A (en) 1981-06-11

Family

ID=15413072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14667679A Pending JPS5669932A (en) 1979-11-13 1979-11-13 Logic circuit

Country Status (1)

Country Link
JP (1) JPS5669932A (en)

Similar Documents

Publication Publication Date Title
JPS56111180A (en) Semiconductor device
JPS57204630A (en) Control circuit of pulse width
JPS5669932A (en) Logic circuit
JPS5571000A (en) Memory unit
JPS5648725A (en) Mosfet circuit
JPS5762774A (en) Output voltae control circuit
JPS56127214A (en) Power supply circuit
JPS57107618A (en) Power amplifier
JPS56119530A (en) Semiconductor integrated circuit
JPS57176837A (en) Level shift circuit
JPS5776916A (en) Output circuit
JPS55136869A (en) Current controlling circuit for dummy load
JPS57204928A (en) Stabilized power supply circuit
JPS5533315A (en) Serial connection circuit for self-arc-extinguishing semiconductor element
JPS57182120A (en) Photocoupler device
JPS5776923A (en) Signal input circuit
JPS559241A (en) Constant voltage circuit
JPS554621A (en) Digital input circuit
JPS5723318A (en) Comparator using programable unijunction transistor
JPS54148361A (en) Logic integrated circuit
JPS56138308A (en) Phase shift multiplication type fm demodulator
JPS5333347A (en) Power supply circuit of switching control type
JPS57168523A (en) Contact input circuit
JPS5730412A (en) Voltage comparison circuit
JPS5664518A (en) Integrated logic circuit