JPS57136820A - Semiconductor logical circuit - Google Patents

Semiconductor logical circuit

Info

Publication number
JPS57136820A
JPS57136820A JP57004369A JP436982A JPS57136820A JP S57136820 A JPS57136820 A JP S57136820A JP 57004369 A JP57004369 A JP 57004369A JP 436982 A JP436982 A JP 436982A JP S57136820 A JPS57136820 A JP S57136820A
Authority
JP
Japan
Prior art keywords
reference voltage
terminal
source
logical amplitude
logical circuit
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
JP57004369A
Other languages
Japanese (ja)
Other versions
JPS6126252B2 (en
Inventor
Hiromichi Kimura
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 JP57004369A priority Critical patent/JPS57136820A/en
Publication of JPS57136820A publication Critical patent/JPS57136820A/en
Publication of JPS6126252B2 publication Critical patent/JPS6126252B2/ja
Granted 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
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H03K19/018—Coupling arrangements; Interface arrangements using bipolar transistors only
    • H03K19/01806—Interface arrangements
    • H03K19/01812—Interface arrangements with at least one differential stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Logic Circuits (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)

Abstract

PURPOSE:To vary the reference voltage in accordance with the external logical amplitude, by controlling the current obtained from the reference voltage and flows to a resistance from the outside. CONSTITUTION:A reference voltage circuit contains two constant current sources (Q10; R10) and (Q11, R11). A control terminal 12 is led out of the source (Q11; R11), and the other source (Q10; R10) is connected to a terminal 11 of a reference voltage source within a chip. When no control signal is applied to the terminal 12, the transistor TRQ11 is cut off to apply the reference potential to a small logical amplitude to the base of a TRQ8. When the logical amplitude applied to input terminals 9 and 10 is large, the terminal 12 is connected to the terminal 11 to increase the reference voltage.
JP57004369A 1982-01-14 1982-01-14 Semiconductor logical circuit Granted JPS57136820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57004369A JPS57136820A (en) 1982-01-14 1982-01-14 Semiconductor logical circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57004369A JPS57136820A (en) 1982-01-14 1982-01-14 Semiconductor logical circuit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP47044072A Division JPS597247B2 (en) 1972-05-01 1972-05-01 semiconductor logic circuit

Publications (2)

Publication Number Publication Date
JPS57136820A true JPS57136820A (en) 1982-08-24
JPS6126252B2 JPS6126252B2 (en) 1986-06-19

Family

ID=11582450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57004369A Granted JPS57136820A (en) 1982-01-14 1982-01-14 Semiconductor logical circuit

Country Status (1)

Country Link
JP (1) JPS57136820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60142619A (en) * 1983-12-28 1985-07-27 Fujitsu Ltd Semiconductor integrated circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60142619A (en) * 1983-12-28 1985-07-27 Fujitsu Ltd Semiconductor integrated circuit
JPH0578967B2 (en) * 1983-12-28 1993-10-29 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6126252B2 (en) 1986-06-19

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