JPS5457943A - Schmitt trigger circuit - Google Patents

Schmitt trigger circuit

Info

Publication number
JPS5457943A
JPS5457943A JP12488177A JP12488177A JPS5457943A JP S5457943 A JPS5457943 A JP S5457943A JP 12488177 A JP12488177 A JP 12488177A JP 12488177 A JP12488177 A JP 12488177A JP S5457943 A JPS5457943 A JP S5457943A
Authority
JP
Japan
Prior art keywords
voltage
constitution
base
supplied
reference voltage
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
JP12488177A
Other languages
Japanese (ja)
Other versions
JPS6031290B2 (en
Inventor
Shigeki Kumagai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP52124881A priority Critical patent/JPS6031290B2/en
Publication of JPS5457943A publication Critical patent/JPS5457943A/en
Publication of JPS6031290B2 publication Critical patent/JPS6031290B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
    • H03K3/2897—Bistables with hysteresis, e.g. Schmitt trigger with an input circuit of differential configuration

Abstract

PURPOSE:To make it possible to obtain a high precision and to make this constitution into an IC easily by controlling a switching element by the output of a load circuit and giving a constitution where the reference voltage and the off voltage can be set independently. CONSTITUTION:Input signal I is supplied to the base of transistor TrQ11, and voltage VOFF which is obtained by dividing the voltage across power supply VCC and the earth by resistances R11 and R12 is supplied to the base of TrQ12, and voltage VON which is obtained by dividing the voltage across power supply VCC and the earth by resistances R13 and R14 is supplied to the base of TrQ13. Then, resistance R16 is connected to the common emitter of transistors, and load circuit 11 is provided in the collector side, and the collector of switching element Q14 is connected to the reference voltage VON point in the base side of TrQ13, and TrQ14 is controlled by the output of circuit 11. As a result, a high precision can be obtained and this constitution can be made into an IC easily because of the constitution where reference voltage VON and off voltage VOFF can be set independently.
JP52124881A 1977-10-18 1977-10-18 Schmidt trigger circuit Expired JPS6031290B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52124881A JPS6031290B2 (en) 1977-10-18 1977-10-18 Schmidt trigger circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52124881A JPS6031290B2 (en) 1977-10-18 1977-10-18 Schmidt trigger circuit

Publications (2)

Publication Number Publication Date
JPS5457943A true JPS5457943A (en) 1979-05-10
JPS6031290B2 JPS6031290B2 (en) 1985-07-22

Family

ID=14896395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52124881A Expired JPS6031290B2 (en) 1977-10-18 1977-10-18 Schmidt trigger circuit

Country Status (1)

Country Link
JP (1) JPS6031290B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5643825A (en) * 1979-09-19 1981-04-22 Toshiba Corp Schmitt trigger circuit
JPS56137582A (en) * 1980-03-31 1981-10-27 Chiyou Lsi Gijutsu Kenkyu Kumiai Write-in input circuit
JPS58172015A (en) * 1982-04-01 1983-10-08 Nec Ic Microcomput Syst Ltd Generating circuit of saw-tooth wave
EP0175522A2 (en) * 1984-09-07 1986-03-26 Advanced Micro Devices, Inc. Voltage temperature compensated hysteresis type line receiver circuit
JPS62121A (en) * 1985-06-26 1987-01-06 Toshiba Corp Schmitt trigger circuit
JPS63267010A (en) * 1987-04-24 1988-11-04 Victor Co Of Japan Ltd Schmitt trigger circuit
US5656957A (en) * 1995-10-19 1997-08-12 Sgs-Thomson Microelectronics, Inc. Comparator circuit with hysteresis
EP1235348A1 (en) * 2001-02-14 2002-08-28 Siemens Aktiengesellschaft Hysteresis circuit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5643825A (en) * 1979-09-19 1981-04-22 Toshiba Corp Schmitt trigger circuit
JPS6223494B2 (en) * 1979-09-19 1987-05-23 Tokyo Shibaura Electric Co
JPS56137582A (en) * 1980-03-31 1981-10-27 Chiyou Lsi Gijutsu Kenkyu Kumiai Write-in input circuit
JPS58172015A (en) * 1982-04-01 1983-10-08 Nec Ic Microcomput Syst Ltd Generating circuit of saw-tooth wave
JPS634965B2 (en) * 1982-04-01 1988-02-01 Nippon Denki Aishii Maikon Shisutemu Kk
EP0175522A2 (en) * 1984-09-07 1986-03-26 Advanced Micro Devices, Inc. Voltage temperature compensated hysteresis type line receiver circuit
JPS62121A (en) * 1985-06-26 1987-01-06 Toshiba Corp Schmitt trigger circuit
JPS63267010A (en) * 1987-04-24 1988-11-04 Victor Co Of Japan Ltd Schmitt trigger circuit
US5656957A (en) * 1995-10-19 1997-08-12 Sgs-Thomson Microelectronics, Inc. Comparator circuit with hysteresis
EP1235348A1 (en) * 2001-02-14 2002-08-28 Siemens Aktiengesellschaft Hysteresis circuit

Also Published As

Publication number Publication date
JPS6031290B2 (en) 1985-07-22

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