GB1403622A - Logic circuits - Google Patents

Logic circuits

Info

Publication number
GB1403622A
GB1403622A GB3846772A GB3846772A GB1403622A GB 1403622 A GB1403622 A GB 1403622A GB 3846772 A GB3846772 A GB 3846772A GB 3846772 A GB3846772 A GB 3846772A GB 1403622 A GB1403622 A GB 1403622A
Authority
GB
United Kingdom
Prior art keywords
transistors
resistor
stage
circuits
logic circuits
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.)
Expired
Application number
GB3846772A
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.)
Fairchild Semiconductor Corp
Original Assignee
Fairchild Camera and Instrument Corp
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 Fairchild Camera and Instrument Corp filed Critical Fairchild Camera and Instrument Corp
Publication of GB1403622A publication Critical patent/GB1403622A/en
Expired 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
    • H03K19/0002—Multistate logic

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)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Picture Signal Circuits (AREA)

Abstract

1403622 Emitter coupled logic circuits FAIRCHILD CAMERA & INSTRUMENT CORP 17 Aug 1972 [13 Sept 1971] 38467/72 Heading H3T Emitter coupled logic circuits having emitter follower outputs are coupled by connecting erect and inverted outputs of one stage to respective bases of the next through voltage level shifting transistors. As shown, the stage 14, 15 is coupled through diode connected transistors 25-29 to the input of the next stage 40, 37. It is explained that the three transistors 19, 25, 26 and 22, 28, 29, whichever set is conducting, hold the voltage across resistor 41 three diode-voltage drops below the supply V cc and accordingly separate biasing couplings may be avoided and resistor 41 may replace the normal constant current transistor. Resistor 44 and diodes 45 and 46 provide temperature compensation. The arrangement may be used in bi-stable circuits and in NAND and NOR circuits in which case additional transistors may be connected in series with 37 and 40. Diodes 45 and 46 provide temperature compensation.
GB3846772A 1971-09-13 1972-08-17 Logic circuits Expired GB1403622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17974471A 1971-09-13 1971-09-13

Publications (1)

Publication Number Publication Date
GB1403622A true GB1403622A (en) 1975-08-28

Family

ID=22657812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3846772A Expired GB1403622A (en) 1971-09-13 1972-08-17 Logic circuits

Country Status (8)

Country Link
JP (1) JPS4838662A (en)
AU (1) AU470288B2 (en)
CA (1) CA974307A (en)
DE (1) DE2243634A1 (en)
FR (1) FR2152919B1 (en)
GB (1) GB1403622A (en)
IT (1) IT974983B (en)
NL (1) NL7211636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039881A (en) * 1989-06-23 1991-08-13 Motorola, Inc. High speed, low power input buffer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631427A (en) * 1984-11-19 1986-12-23 Advanced Micro Devices, Inc. ECL gate circuit having internally generated reference voltages
US4649298A (en) * 1985-01-09 1987-03-10 At&T Bell Laboratories Non-saturating tri-state driver circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039881A (en) * 1989-06-23 1991-08-13 Motorola, Inc. High speed, low power input buffer

Also Published As

Publication number Publication date
AU4658072A (en) 1974-03-21
CA974307A (en) 1975-09-09
FR2152919A1 (en) 1973-04-27
FR2152919B1 (en) 1974-01-04
JPS4838662A (en) 1973-06-07
DE2243634A1 (en) 1973-03-22
NL7211636A (en) 1973-03-15
IT974983B (en) 1974-07-10
AU470288B2 (en) 1976-03-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee