JPS5597763A - Ternary pulse generating circuit - Google Patents

Ternary pulse generating circuit

Info

Publication number
JPS5597763A
JPS5597763A JP514279A JP514279A JPS5597763A JP S5597763 A JPS5597763 A JP S5597763A JP 514279 A JP514279 A JP 514279A JP 514279 A JP514279 A JP 514279A JP S5597763 A JPS5597763 A JP S5597763A
Authority
JP
Japan
Prior art keywords
circuit
trs7
base
terminal
pulse
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
JP514279A
Other languages
Japanese (ja)
Other versions
JPS6334658B2 (en
Inventor
Kiyoaki Kawai
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 JP514279A priority Critical patent/JPS5597763A/en
Publication of JPS5597763A publication Critical patent/JPS5597763A/en
Publication of JPS6334658B2 publication Critical patent/JPS6334658B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Logic Circuits (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To omit a terminating resistance needed for the integrated circuit of a ternary pulse generating circuit used for a digital repeater, etc., by generating a ternary pulse rising rapidly by a small number of elements. CONSTITUTION:A ternary pulse generating circuit is constituted by providing input terminals 1, 2 and 4', reference voltage terminal 5, and power voltage terminal 6 in addition to transistors Tr7-Tr9, and output transistor 11 constituting a current switching circuit. A pulse corresponding to a positive-polarity output is applied from terminal 1 to the base of Tr7 of this circuit, and that corresponding to a negative-polarity output from terminal 2 to the base of Tr8; and the NOR pulse of a base-applied signal applied to Trs7 and 8 is applied to the base of Tr9 and while in-phase and out-of-phase primary windings of transformer 11 is conneced to collectors of Trs7 and 8, constant-current circuit 10 is connected to emitters of Trs7, 8 and 9 in common. Then, Trs7, 8 and 9 constituting the current switching circuit are driven complementarily to improve the rising time of a waveform outputted from output terminal 3, so that the need for the terminating resistance of an integrated circuit will be eliminated.
JP514279A 1979-01-19 1979-01-19 Ternary pulse generating circuit Granted JPS5597763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP514279A JPS5597763A (en) 1979-01-19 1979-01-19 Ternary pulse generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP514279A JPS5597763A (en) 1979-01-19 1979-01-19 Ternary pulse generating circuit

Publications (2)

Publication Number Publication Date
JPS5597763A true JPS5597763A (en) 1980-07-25
JPS6334658B2 JPS6334658B2 (en) 1988-07-12

Family

ID=11603044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP514279A Granted JPS5597763A (en) 1979-01-19 1979-01-19 Ternary pulse generating circuit

Country Status (1)

Country Link
JP (1) JPS5597763A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192156A (en) * 1981-05-22 1982-11-26 Fujitsu Ltd Pulse outputting circuit
JPS5836051A (en) * 1981-08-27 1983-03-02 Fujitsu Ltd Pulse output circuit
US4606046A (en) * 1983-12-27 1986-08-12 At&T Bell Laboratories Converter/line driver circuit for a line repeater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192156A (en) * 1981-05-22 1982-11-26 Fujitsu Ltd Pulse outputting circuit
JPS5836051A (en) * 1981-08-27 1983-03-02 Fujitsu Ltd Pulse output circuit
US4606046A (en) * 1983-12-27 1986-08-12 At&T Bell Laboratories Converter/line driver circuit for a line repeater

Also Published As

Publication number Publication date
JPS6334658B2 (en) 1988-07-12

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