JPS54111747A - Drive circuit for matrix - Google Patents

Drive circuit for matrix

Info

Publication number
JPS54111747A
JPS54111747A JP1921478A JP1921478A JPS54111747A JP S54111747 A JPS54111747 A JP S54111747A JP 1921478 A JP1921478 A JP 1921478A JP 1921478 A JP1921478 A JP 1921478A JP S54111747 A JPS54111747 A JP S54111747A
Authority
JP
Japan
Prior art keywords
input
current source
constant current
circuit
trq1
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
JP1921478A
Other languages
Japanese (ja)
Other versions
JPS6049379B2 (en
Inventor
Kyozo Shimizu
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 JP53019214A priority Critical patent/JPS6049379B2/en
Publication of JPS54111747A publication Critical patent/JPS54111747A/en
Publication of JPS6049379B2 publication Critical patent/JPS6049379B2/en
Expired 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

Landscapes

  • Logic Circuits (AREA)

Abstract

PURPOSE:To constitute the circuit less in power consumption, even with current selection type circuit, by giving the full breeder current of the circuit with one constant current source commonly, independent of the number of inputs. CONSTITUTION:The input drive current switch transistors TrQ1, Q3... every input are connected each input to the base and the collector is connected to the line (or row) giving each input of the matrix array circuit. Further, the emitter of TrQR for reference voltage in which the base is commonly connected to the reference voltage VREF set to the intermediate voltage of the high and low level of input, and the emitter of TrQ1, Q2... are commonly connected, and the potential point is connected to the constant current source IT. Thus, when high level signal is fed to the input IN, either of TrQ1, Q2... is turned on and the breeder currents IR1, IR2, IR3... flow via this to the constant current source IT, then the constant current source IT can be set to the value almost equal to the full breader current, and it can not be changed even with the number of inputs IN increased.
JP53019214A 1978-02-22 1978-02-22 matrix drive circuit Expired JPS6049379B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53019214A JPS6049379B2 (en) 1978-02-22 1978-02-22 matrix drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53019214A JPS6049379B2 (en) 1978-02-22 1978-02-22 matrix drive circuit

Publications (2)

Publication Number Publication Date
JPS54111747A true JPS54111747A (en) 1979-09-01
JPS6049379B2 JPS6049379B2 (en) 1985-11-01

Family

ID=11993112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53019214A Expired JPS6049379B2 (en) 1978-02-22 1978-02-22 matrix drive circuit

Country Status (1)

Country Link
JP (1) JPS6049379B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105438A (en) * 1979-02-07 1980-08-13 Nec Corp Logic array

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105438A (en) * 1979-02-07 1980-08-13 Nec Corp Logic array

Also Published As

Publication number Publication date
JPS6049379B2 (en) 1985-11-01

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