JPS55141826A - Input circuit for integrated circuit - Google Patents

Input circuit for integrated circuit

Info

Publication number
JPS55141826A
JPS55141826A JP5108479A JP5108479A JPS55141826A JP S55141826 A JPS55141826 A JP S55141826A JP 5108479 A JP5108479 A JP 5108479A JP 5108479 A JP5108479 A JP 5108479A JP S55141826 A JPS55141826 A JP S55141826A
Authority
JP
Japan
Prior art keywords
transistor
terminal
resistor
pull
output
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.)
Granted
Application number
JP5108479A
Other languages
Japanese (ja)
Other versions
JPH0114735B2 (en
Inventor
Katsuyuki Ikeda
Mitsuhiro Goto
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP5108479A priority Critical patent/JPS55141826A/en
Publication of JPS55141826A publication Critical patent/JPS55141826A/en
Publication of JPH0114735B2 publication Critical patent/JPH0114735B2/ja
Granted 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
    • H03K19/017—Modifications for accelerating switching in field-effect transistor circuits
    • H03K19/01707—Modifications for accelerating switching in field-effect transistor circuits in asynchronous circuits
    • H03K19/01721—Modifications for accelerating switching in field-effect transistor circuits in asynchronous circuits by means of a pull-up or down element

Landscapes

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

Abstract

PURPOSE:To minimize the current flowing into the pull-up resistor and to enable the control with one circuit switch, by controlling the gate of the transistor having smaller mutual conductance connected between the input terminal and the power supply. CONSTITUTION:When the output of the flip flop 413 shows operating state, the terminal 414 is at low level, to turn on the transistor 401 having smaller mutual conductance, constituting the pull-up resistor. Further, since the transistor 403 is ON and 405 is OFF, the transistors 404 and 406 constitute complementary inverter to output the signal inverting the input terminal 402. When the output of the flip flop 413 shows stationary state, the transistor 401 is OFF and the pull-up resistor is cut off. In this case, since the terminal 402 is in float, the transistor 405 in ON and 403 is OFF to make low level the terminal 407 compulsively.
JP5108479A 1979-04-24 1979-04-24 Input circuit for integrated circuit Granted JPS55141826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5108479A JPS55141826A (en) 1979-04-24 1979-04-24 Input circuit for integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5108479A JPS55141826A (en) 1979-04-24 1979-04-24 Input circuit for integrated circuit

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2031915A Division JPH02243017A (en) 1990-02-13 1990-02-13 Input circuit for integrated circuit

Publications (2)

Publication Number Publication Date
JPS55141826A true JPS55141826A (en) 1980-11-06
JPH0114735B2 JPH0114735B2 (en) 1989-03-14

Family

ID=12876946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5108479A Granted JPS55141826A (en) 1979-04-24 1979-04-24 Input circuit for integrated circuit

Country Status (1)

Country Link
JP (1) JPS55141826A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919434A (en) * 1982-07-23 1984-01-31 Hitachi Ltd Level guarantee circuit
JPS62259292A (en) * 1987-03-20 1987-11-11 Toshiba Corp Semiconductor integrated circuit device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5376719A (en) * 1976-12-20 1978-07-07 Fujitsu Ltd Output buffer circuit with tri-state control
JPS53117932A (en) * 1977-03-25 1978-10-14 Hitachi Ltd Input circuit
JPS53118313A (en) * 1977-03-25 1978-10-16 Nec Corp Key input circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5376719A (en) * 1976-12-20 1978-07-07 Fujitsu Ltd Output buffer circuit with tri-state control
JPS53117932A (en) * 1977-03-25 1978-10-14 Hitachi Ltd Input circuit
JPS53118313A (en) * 1977-03-25 1978-10-16 Nec Corp Key input circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919434A (en) * 1982-07-23 1984-01-31 Hitachi Ltd Level guarantee circuit
JPH05890B2 (en) * 1982-07-23 1993-01-07 Hitachi Ltd
JPS62259292A (en) * 1987-03-20 1987-11-11 Toshiba Corp Semiconductor integrated circuit device

Also Published As

Publication number Publication date
JPH0114735B2 (en) 1989-03-14

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