JPS6427313A - Field effect transistor logic circuit - Google Patents

Field effect transistor logic circuit

Info

Publication number
JPS6427313A
JPS6427313A JP62183915A JP18391587A JPS6427313A JP S6427313 A JPS6427313 A JP S6427313A JP 62183915 A JP62183915 A JP 62183915A JP 18391587 A JP18391587 A JP 18391587A JP S6427313 A JPS6427313 A JP S6427313A
Authority
JP
Japan
Prior art keywords
current
fet
logic circuit
mesfet
resistor
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
JP62183915A
Other languages
Japanese (ja)
Other versions
JPH0654872B2 (en
Inventor
Tadashi Maeta
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
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 filed Critical NEC Corp
Priority to JP62183915A priority Critical patent/JPH0654872B2/en
Publication of JPS6427313A publication Critical patent/JPS6427313A/en
Publication of JPH0654872B2 publication Critical patent/JPH0654872B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03K19/094—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors
    • H03K19/0952—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using field-effect transistors using Schottky type FET MESFET
    • 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

Abstract

PURPOSE:To form a circuit with a small speed-delay time product even when only a single phase output is used by connecting a resistor and a capacitive load as a gate bias of a current source FET in a source coupled type FET logic circuit (SCFL circuit). CONSTITUTION:A FET logic circuit uses a capacitor and a resistor so as to vary tentatively a gate bias of a current source FET of an SCFL circuit in response to an input signal. When the input changes from a low to a high level, the potential at a node 32 is raised momentarily by the electric charge conservation rule and discharged via a resistor 6. Thus, the current driving capability of a MESFET 5 is improved tentatively. Since the speed depends on the current of the current source FET, the leading characteristic when the input changes from a low to a high level is quickened. Moreover, when the input changes from a high to a low level, although the current of the MESFET 5 is decreased, since the MESFET 3 is cut off, the speed is not deteriorated.
JP62183915A 1987-07-22 1987-07-22 Field effect transistor logic circuit Expired - Lifetime JPH0654872B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62183915A JPH0654872B2 (en) 1987-07-22 1987-07-22 Field effect transistor logic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62183915A JPH0654872B2 (en) 1987-07-22 1987-07-22 Field effect transistor logic circuit

Publications (2)

Publication Number Publication Date
JPS6427313A true JPS6427313A (en) 1989-01-30
JPH0654872B2 JPH0654872B2 (en) 1994-07-20

Family

ID=16144038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62183915A Expired - Lifetime JPH0654872B2 (en) 1987-07-22 1987-07-22 Field effect transistor logic circuit

Country Status (1)

Country Link
JP (1) JPH0654872B2 (en)

Also Published As

Publication number Publication date
JPH0654872B2 (en) 1994-07-20

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