JPS54138363A - Semiconductor circuit - Google Patents

Semiconductor circuit

Info

Publication number
JPS54138363A
JPS54138363A JP4609978A JP4609978A JPS54138363A JP S54138363 A JPS54138363 A JP S54138363A JP 4609978 A JP4609978 A JP 4609978A JP 4609978 A JP4609978 A JP 4609978A JP S54138363 A JPS54138363 A JP S54138363A
Authority
JP
Japan
Prior art keywords
output terminal
level
constitution
resistor
transistor
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
JP4609978A
Other languages
Japanese (ja)
Inventor
Norikuni Azuma
Osamu Oba
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4609978A priority Critical patent/JPS54138363A/en
Publication of JPS54138363A publication Critical patent/JPS54138363A/en
Pending 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
    • H03K19/003—Modifications for increasing the reliability for protection
    • H03K19/00307—Modifications for increasing the reliability for protection in bipolar transistor circuits

Landscapes

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

Abstract

PURPOSE:To decrease the cross talk by high density implementation, by increasing the switching speed through the reduction in the logical amplitude with the connection of the series circuit consisting of a diode and a resistor to the output terminal of the NAND gate of fundamental constitution. CONSTITUTION:The fundamental constitution of a NAND gate is made with transistors Q1, Q2 and resistors R1, R2, and when the input terminal IN is at high level, the transistor Q2 is conductive and the output terminal OUT is at low level. When the input terminal IN is at low level, the transistor Q2 is turned off and the output terminal is at high level. Further, the output level is clamped with the series circuit consisting of a diode D1 and a resistor R3 connected to the output terminal OUT, and the logical amplitude is reduced in comparison with the power supply voltage Vcc.
JP4609978A 1978-04-19 1978-04-19 Semiconductor circuit Pending JPS54138363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4609978A JPS54138363A (en) 1978-04-19 1978-04-19 Semiconductor circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4609978A JPS54138363A (en) 1978-04-19 1978-04-19 Semiconductor circuit

Publications (1)

Publication Number Publication Date
JPS54138363A true JPS54138363A (en) 1979-10-26

Family

ID=12737539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4609978A Pending JPS54138363A (en) 1978-04-19 1978-04-19 Semiconductor circuit

Country Status (1)

Country Link
JP (1) JPS54138363A (en)

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