JPS5637729A - Analog multiplexer - Google Patents

Analog multiplexer

Info

Publication number
JPS5637729A
JPS5637729A JP11286979A JP11286979A JPS5637729A JP S5637729 A JPS5637729 A JP S5637729A JP 11286979 A JP11286979 A JP 11286979A JP 11286979 A JP11286979 A JP 11286979A JP S5637729 A JPS5637729 A JP S5637729A
Authority
JP
Japan
Prior art keywords
circuit
constitution
analog switch
input
plus
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
JP11286979A
Other languages
Japanese (ja)
Inventor
Ryohei Saga
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.)
Hitachi Ltd
Renesas Eastern Japan Semiconductor Inc
Original Assignee
Hitachi Tokyo Electronics Co Ltd
Hitachi Ltd
Hitachi Ome Electronic 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 Hitachi Tokyo Electronics Co Ltd, Hitachi Ltd, Hitachi Ome Electronic Co Ltd filed Critical Hitachi Tokyo Electronics Co Ltd
Priority to JP11286979A priority Critical patent/JPS5637729A/en
Publication of JPS5637729A publication Critical patent/JPS5637729A/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 greatly the circuit constitution as well as ensure a suited application to the monolithic semiconductor IC, by constituting all parts with the bipolar transistors. CONSTITUTION:The analog switch input circuit consists of the pnp transistor Q1 in which the collector is connected to the earth potential OV with the analog input V1 applied to the base plus the npn transistor Q2 in which the emitter is connected to the emitter of the Q1 and the output is obtained through the collector with the base used as the switching control input C1. Then the analog switch input circuits Q3 and Q4 plus Q5 and Q6, etc. of the similar constitution of the above-mentioned input circuit are arranges in parallel, and the constant current circuit I1 is provided with the common output. At the same time, the voltage comparator circuit is formed with the pnp differential pair transistors Q9 and Q10, the npn transistors Q11 and Q12 plus the circuit I1 each. The analog switch circuit has a simple constitution, and the voltage comparator circuit can be used in common to a number of analog switch circuits. As a result, the constitution of the circuit can be simplified greatly.
JP11286979A 1979-09-05 1979-09-05 Analog multiplexer Pending JPS5637729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11286979A JPS5637729A (en) 1979-09-05 1979-09-05 Analog multiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11286979A JPS5637729A (en) 1979-09-05 1979-09-05 Analog multiplexer

Publications (1)

Publication Number Publication Date
JPS5637729A true JPS5637729A (en) 1981-04-11

Family

ID=14597556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11286979A Pending JPS5637729A (en) 1979-09-05 1979-09-05 Analog multiplexer

Country Status (1)

Country Link
JP (1) JPS5637729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101524A (en) * 1981-12-11 1983-06-16 Matsushita Electric Ind Co Ltd Electronic switch circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58101524A (en) * 1981-12-11 1983-06-16 Matsushita Electric Ind Co Ltd Electronic switch circuit

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