JPS5799824A - Logical operation circuit - Google Patents

Logical operation circuit

Info

Publication number
JPS5799824A
JPS5799824A JP55176679A JP17667980A JPS5799824A JP S5799824 A JPS5799824 A JP S5799824A JP 55176679 A JP55176679 A JP 55176679A JP 17667980 A JP17667980 A JP 17667980A JP S5799824 A JPS5799824 A JP S5799824A
Authority
JP
Japan
Prior art keywords
trt9
transistor
base
diode
phase dividing
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
JP55176679A
Other languages
Japanese (ja)
Other versions
JPH0234211B2 (en
Inventor
Yasushi Yasuda
Akinori Tawara
Yuki Shimauchi
Hiroshi Enomoto
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 JP55176679A priority Critical patent/JPS5799824A/en
Publication of JPS5799824A publication Critical patent/JPS5799824A/en
Publication of JPH0234211B2 publication Critical patent/JPH0234211B2/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
    • H03K19/01—Modifications for accelerating switching
    • H03K19/013—Modifications for accelerating switching in bipolar transistor circuits
    • H03K19/0136—Modifications for accelerating switching in bipolar transistor circuits by means of a pull-up or down element

Abstract

PURPOSE:To reduce the number of elements to obtain a superior integrated circuit, by connecting a transistor for discharge to the base of a phase dividing transistor and the collector of an output transistor. CONSTITUTION:The base of a transistor TRT9 for discharge is connected to a phase dividing TRT4, and the collector of the TRT9 is connected to the base of an output TRT6 through a diode D2. Consequently, the base electric charge of the TRT6 is discharged to the earth by turning-on of the TRT9. The diode D2 is provided for accelerating the transient of the phase dividing TRT4 to turn-off. Thus, the number of required TRs is reduced, and an active pull-down circuit requiring resistances is unnecessary. Since the TRT9 and the diode D2 are formed on the same isolation, the occupied area of the circuit on a chip is reduced.
JP55176679A 1980-12-15 1980-12-15 Logical operation circuit Granted JPS5799824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55176679A JPS5799824A (en) 1980-12-15 1980-12-15 Logical operation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55176679A JPS5799824A (en) 1980-12-15 1980-12-15 Logical operation circuit

Publications (2)

Publication Number Publication Date
JPS5799824A true JPS5799824A (en) 1982-06-21
JPH0234211B2 JPH0234211B2 (en) 1990-08-02

Family

ID=16017819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55176679A Granted JPS5799824A (en) 1980-12-15 1980-12-15 Logical operation circuit

Country Status (1)

Country Link
JP (1) JPS5799824A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841173A (en) * 1986-08-07 1989-06-20 Mitsubishi Denki Kabushiki Kaisha Bipolar logic circuit
JPH032662U (en) * 1989-05-31 1991-01-11
US4985648A (en) * 1988-07-26 1991-01-15 Matsushita Electric Industrial Co. Ltd. Switching output circuit with high speed operation and low power consumption

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841173A (en) * 1986-08-07 1989-06-20 Mitsubishi Denki Kabushiki Kaisha Bipolar logic circuit
US4985648A (en) * 1988-07-26 1991-01-15 Matsushita Electric Industrial Co. Ltd. Switching output circuit with high speed operation and low power consumption
JPH032662U (en) * 1989-05-31 1991-01-11

Also Published As

Publication number Publication date
JPH0234211B2 (en) 1990-08-02

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