JPS55132128A - Signal switching circuit device - Google Patents

Signal switching circuit device

Info

Publication number
JPS55132128A
JPS55132128A JP3965479A JP3965479A JPS55132128A JP S55132128 A JPS55132128 A JP S55132128A JP 3965479 A JP3965479 A JP 3965479A JP 3965479 A JP3965479 A JP 3965479A JP S55132128 A JPS55132128 A JP S55132128A
Authority
JP
Japan
Prior art keywords
trs
circuit
signal
input
constant
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
JP3965479A
Other languages
Japanese (ja)
Inventor
Yasuta Tomuro
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3965479A priority Critical patent/JPS55132128A/en
Publication of JPS55132128A publication Critical patent/JPS55132128A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
    • H03K17/6257—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To simplify a direct connection to a semiconductor integrated-circuit device by applying a switching signal to a 3rd input terminal and then by extracting signals, corresponding to 1st and 2nd input signals, from one terminal of a load resistance by switching. CONSTITUTION:Respective 1st-3rd differential amplifying circuits 20, 23 and 26 consist of 1st-6th npn transistors (TR) 18 and 19, TRs 21 and 22, and TRs 24 and 25. Then, TRs 24 and 23 constitute 1st and 2nd constant-current circuits which absorb constant currents from circuits 20 and 23 respectively, and 7th npn Tr27 constitutes the 3rd absorptance constant-current circuit which absorbs constant current I0 from circuit 26. Circuit 26 has 3rd input terminal 15 as a switching signal terminal, which is applied with a high level voltage higher than the common base bias voltage of TRs 24 and 25 to turn TRs 24 and 25 ON and OFF respectively, and consequently current I0 is all flowed through TR24. As a result, although circuit 20 is placed in an eperation state to derive the signal of the 1st input 13 as the signal of output 17, it is made possible to eliminate output 17 of the signal of the 2nd input 14 since TR23 is OFF.
JP3965479A 1979-04-02 1979-04-02 Signal switching circuit device Pending JPS55132128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3965479A JPS55132128A (en) 1979-04-02 1979-04-02 Signal switching circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3965479A JPS55132128A (en) 1979-04-02 1979-04-02 Signal switching circuit device

Publications (1)

Publication Number Publication Date
JPS55132128A true JPS55132128A (en) 1980-10-14

Family

ID=12559064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3965479A Pending JPS55132128A (en) 1979-04-02 1979-04-02 Signal switching circuit device

Country Status (1)

Country Link
JP (1) JPS55132128A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101866580A (en) * 2010-06-21 2010-10-20 旭曜科技股份有限公司 Transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101866580A (en) * 2010-06-21 2010-10-20 旭曜科技股份有限公司 Transformer

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