JPS5711537A - Logical circuit - Google Patents

Logical circuit

Info

Publication number
JPS5711537A
JPS5711537A JP8630780A JP8630780A JPS5711537A JP S5711537 A JPS5711537 A JP S5711537A JP 8630780 A JP8630780 A JP 8630780A JP 8630780 A JP8630780 A JP 8630780A JP S5711537 A JPS5711537 A JP S5711537A
Authority
JP
Japan
Prior art keywords
level
node
output
power supply
capacitor
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
JP8630780A
Other languages
Japanese (ja)
Inventor
Manabu Ando
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 JP8630780A priority Critical patent/JPS5711537A/en
Publication of JPS5711537A publication Critical patent/JPS5711537A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—BASIC 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
    • H03K19/01714—Modifications for accelerating switching in field-effect transistor circuits in asynchronous circuits by bootstrapping, i.e. by positive feed-back

Abstract

PURPOSE:To pull up an output to a power supply level at all time, against any input condition, by using a bootstrap capacitor for a logical circuit using a field effect transistor (TR) and pulling up the output to the power supply level. CONSTITUTION:An input waveform A is inputted to inverters Q1, Q2 and also FETs Q3, Q4, and the output of the FETs Q3, Q4 is applied to a bootstrap capacitor C1. When the input level is fallen down after being once up, since the level of a node 3 is already down to caused high impedance FET Q3 and the FET Q4 is nonconductive based on the lower level of an output terminal B, the level of the node 1 in not decreased. Thus, the electric charge stored in the capacitor C1 is not lost, the node 1 is pulled up more than the power supply level, resulting in increasing the output B to the power supply level. Even if the input level is fallen down until the level of the node 3 is not fallen down, the FET Q3 is conductive and the node 4 is at gronded level, and the capacitor C1 enables bootstrap effect.
JP8630780A 1980-06-25 1980-06-25 Logical circuit Pending JPS5711537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8630780A JPS5711537A (en) 1980-06-25 1980-06-25 Logical circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8630780A JPS5711537A (en) 1980-06-25 1980-06-25 Logical circuit

Publications (1)

Publication Number Publication Date
JPS5711537A true JPS5711537A (en) 1982-01-21

Family

ID=13883170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8630780A Pending JPS5711537A (en) 1980-06-25 1980-06-25 Logical circuit

Country Status (1)

Country Link
JP (1) JPS5711537A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556779A (en) * 1982-03-18 1985-12-03 Minolta Camera Kabushiki Kaisha Temperature control arrangement for heat roller
US5369320A (en) * 1992-07-22 1994-11-29 Oki Electric Industry Co., Ltd. Bootstrapped high-speed output buffer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556779A (en) * 1982-03-18 1985-12-03 Minolta Camera Kabushiki Kaisha Temperature control arrangement for heat roller
US5369320A (en) * 1992-07-22 1994-11-29 Oki Electric Industry Co., Ltd. Bootstrapped high-speed output buffer

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