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JPS55162633A - Bootstrap circuit - Google Patents

Bootstrap circuit

Info

Publication number
JPS55162633A
JPS55162633A JP7099279A JP7099279A JPS55162633A JP S55162633 A JPS55162633 A JP S55162633A JP 7099279 A JP7099279 A JP 7099279A JP 7099279 A JP7099279 A JP 7099279A JP S55162633 A JPS55162633 A JP S55162633A
Authority
JP
Japan
Prior art keywords
level
vcc
phi0
vth
potential
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
JP7099279A
Other languages
Japanese (ja)
Other versions
JPS6361807B2 (en
Inventor
Yasuo Orikabe
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 JP7099279A priority Critical patent/JPS55162633A/en
Publication of JPS55162633A publication Critical patent/JPS55162633A/en
Publication of JPS6361807B2 publication Critical patent/JPS6361807B2/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
    • H03K19/01728—Modifications for accelerating switching in field-effect transistor circuits in synchronous circuits, i.e. by using clock signals
    • H03K19/01735—Modifications for accelerating switching in field-effect transistor circuits in synchronous circuits, i.e. by using clock signals by bootstrapping, i.e. by positive feed-back

Landscapes

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

Abstract

PURPOSE:To efficiently operate the bootstrap circuit, by producing the clock in the integrated circuit chip and sufficiently charging the bootstrap capacitance with the clock. CONSTITUTION:With the clock PHI1 at L level, MOSFETQ5 is ON, and the capacitor C1 is charged up to Vcc-Vth (where; Vth is the threshold voltage of FET5), and next, with the clock phi1 at H level, although the potential at the node P1 is going to be Vcc+Vth or more, since MOSFETQ4 is ON with this state, the potential at the point P1 is limited to Vcc+Vth. This voltage is fed to the gate of MOSFETQ3 and with phi0' of the output voltage at L level, the potential at the node P3 is at Vcc with FETQ3 perfectly ON and the capacitor C is charged. Further, with phi0' at H level, the potential of the node P3 is Vcc or more and the H level of phi0' is Vcc resulting in obtaining the output without voltage drop. The L level of phi0' is the ground level.
JP7099279A 1979-06-06 1979-06-06 Bootstrap circuit Granted JPS55162633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7099279A JPS55162633A (en) 1979-06-06 1979-06-06 Bootstrap circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7099279A JPS55162633A (en) 1979-06-06 1979-06-06 Bootstrap circuit

Publications (2)

Publication Number Publication Date
JPS55162633A true JPS55162633A (en) 1980-12-18
JPS6361807B2 JPS6361807B2 (en) 1988-11-30

Family

ID=13447539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7099279A Granted JPS55162633A (en) 1979-06-06 1979-06-06 Bootstrap circuit

Country Status (1)

Country Link
JP (1) JPS55162633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212997A (en) * 1986-03-12 1987-09-18 Hitachi Ltd Semiconductor integrated circuit device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998954A (en) * 1972-12-29 1974-09-19
JPS5194746A (en) * 1975-02-19 1976-08-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998954A (en) * 1972-12-29 1974-09-19
JPS5194746A (en) * 1975-02-19 1976-08-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212997A (en) * 1986-03-12 1987-09-18 Hitachi Ltd Semiconductor integrated circuit device

Also Published As

Publication number Publication date
JPS6361807B2 (en) 1988-11-30

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