JPS5742234A - Logical circuit - Google Patents

Logical circuit

Info

Publication number
JPS5742234A
JPS5742234A JP11796080A JP11796080A JPS5742234A JP S5742234 A JPS5742234 A JP S5742234A JP 11796080 A JP11796080 A JP 11796080A JP 11796080 A JP11796080 A JP 11796080A JP S5742234 A JPS5742234 A JP S5742234A
Authority
JP
Japan
Prior art keywords
level
output
circuit
diode
power supply
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
JP11796080A
Other languages
Japanese (ja)
Inventor
Satoru Tanizawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP11796080A priority Critical patent/JPS5742234A/en
Publication of JPS5742234A publication Critical patent/JPS5742234A/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
    • H03K19/088—Transistor-transistor logic
    • 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)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To enable high-speed operation with low-power consumption, by connecting an output terminal of an output transistor (TR) to the high potential side of power supply via a diode, in a TTL logical circuit having an H-level clamp circuit. CONSTITUTION:This circuit is at H level for the output when an output TRQ3 and an amplifier TRQ2 are turned off and at L level when the TRs Q3, Q2 turn on. When this output OUT rises from L to H level, the electric charging of the output terminal OUT is quickly made by a current flowing from a power supply Vcc through a low resistor R2 and a diode Q6. The current at H level is limited with a high resistance resistor R5 to be very small.
JP11796080A 1980-08-27 1980-08-27 Logical circuit Pending JPS5742234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11796080A JPS5742234A (en) 1980-08-27 1980-08-27 Logical circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11796080A JPS5742234A (en) 1980-08-27 1980-08-27 Logical circuit

Publications (1)

Publication Number Publication Date
JPS5742234A true JPS5742234A (en) 1982-03-09

Family

ID=14724503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11796080A Pending JPS5742234A (en) 1980-08-27 1980-08-27 Logical circuit

Country Status (1)

Country Link
JP (1) JPS5742234A (en)

Similar Documents

Publication Publication Date Title
JPS6462016A (en) Output buffer circuit
JPS5659321A (en) Constant-current regulated power circuit
JPS5480655A (en) Protection circuit
JPS5742234A (en) Logical circuit
JPS5776916A (en) Output circuit
JPS56119530A (en) Semiconductor integrated circuit
JPS57107638A (en) Logical cell for integrated circuit
JPS579133A (en) Semiconductor logical circuit device
JPS5730413A (en) Schmitt trigger circuit
JPS5790730A (en) Selecting circuit of memory device
JPS6432498A (en) Semiconductor storage device
JPS6442918A (en) Ecl level output circuit
JPS5593320A (en) Switching unit
JPS6432719A (en) Output device for semiconductor integrated circuit
JPS5744336A (en) Logical circuit
JPS57157626A (en) Decoder circuit
JPS554132A (en) Schmitt circuit
JPS5518117A (en) Schmitt circuit
JPS57162833A (en) Pulse generator
JPS6420722A (en) Cmos integrated logic circuit
JPS6465922A (en) Semiconductor integrated circuit
JPS55141826A (en) Input circuit for integrated circuit
JPS5769932A (en) Current switching type logical circuit
JPS55162625A (en) Schmitt trigger circuit
JPS5735421A (en) Malfunction preventing circuit at power supply application