JPS612424A - Cmos logic integrated circuit - Google Patents

Cmos logic integrated circuit

Info

Publication number
JPS612424A
JPS612424A JP59123094A JP12309484A JPS612424A JP S612424 A JPS612424 A JP S612424A JP 59123094 A JP59123094 A JP 59123094A JP 12309484 A JP12309484 A JP 12309484A JP S612424 A JPS612424 A JP S612424A
Authority
JP
Japan
Prior art keywords
integrated circuit
terminal
mos transistor
channel mos
constant voltage
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
JP59123094A
Other languages
Japanese (ja)
Inventor
Masahiro Fuwa
正博 不破
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 JP59123094A priority Critical patent/JPS612424A/en
Publication of JPS612424A publication Critical patent/JPS612424A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K19/00Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/003Modifications for increasing the reliability for protection
    • H03K19/00315Modifications for increasing the reliability for protection in field-effect 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)

Abstract

PURPOSE:To reduce the probability of the generation of malfunction and the generation of latching-up by reducing the high-level output voltage of an ordinary CMOS integrated circuit down to about 0.7 time on the basis of the clamping and level shifting characteristics of a constant voltage diode. CONSTITUTION:The source terminal S of a p-channel MOSTR1 is connected to a power supply terminal 5, the source terminal S of an n-channel MOSTR2 is earthed, a cathode terminal 6a of a constant voltage diode 6 is connected to an output terminal 4, and the anode terminal 6b of the diode 6 is earthed. Consequently, the high level output voltage (VOH) can be clamped down to 3-3.5V as compared to 5V power supply voltage applied to the power supply terminal 5. In the transmission format using the CMOS integrated circuit as a driving circuit, a transient absorption current (iOL) can be reduced down to 0.7 time and the area of the output TR in the CMOS integrated circuit can be also reduced in proportion to 0.7 times.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、pチャンネルMO5)−ランジスタとnチャ
ンネルMO5l−ランジスタとから構成されたαぴ(C
cr@1enentary Metal 0xide 
Sem1conductor )集積回路に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides an α-p(C
cr@1enentary Metal Oxide
Sem1conductor) relates to integrated circuits.

〔従来技術とその問題点〕[Prior art and its problems]

従来、CMOS集積回路の出力高レベル電圧はほとんど
電源電圧まで上ってしまうため、CMO5集積回路が他
のCMOS集積回路、又はTTL集積回路を駆動する伝
送形態において、伝送線路の負荷容量に蓄積された電荷
を放電させる過渡吸収電流(ioi、 )は、CMO5
集積回路の出力高レベル電圧(VOH)を伝送線路の特
性インピーダンス(zO)で割った値であるから、駆動
回路をTTL集積回路とした場合に比べて、駆動回路の
出力高レベル電圧(VOH)の比より約1.4倍大きく
なり、CMOS集積回路の過渡吸収電流能力を上げるよ
う出力トランジスタの面積を太きくしなければならない
という欠点があった。また、上記伝送形態において誘導
雑音の大きさは、駆動回路をTTL集積回路とした場合
に比べて、駆動回路の出力高レベル電圧(VOH)の比
より約1.4倍となり、誘導雑音による誤動作の発生す
る確率が大きくなるという欠点があった。
Conventionally, the output high level voltage of a CMOS integrated circuit rises almost to the power supply voltage, so in a transmission mode where a CMOS integrated circuit drives another CMOS integrated circuit or a TTL integrated circuit, the output high level voltage is accumulated in the load capacitance of the transmission line. The transient absorption current (ioi, ) that discharges the accumulated charge is CMO5
Since it is the value obtained by dividing the output high level voltage (VOH) of the integrated circuit by the characteristic impedance (zO) of the transmission line, the output high level voltage (VOH) of the drive circuit is lower than when the drive circuit is a TTL integrated circuit. This ratio is approximately 1.4 times larger than the current ratio, which has the disadvantage that the area of the output transistor must be increased in order to increase the transient absorption current capability of the CMOS integrated circuit. In addition, in the above transmission form, the magnitude of induced noise is approximately 1.4 times the ratio of the output high level voltage (VOH) of the drive circuit compared to when the drive circuit is a TTL integrated circuit, and malfunctions due to induction noise. The disadvantage is that the probability of occurrence of this increases.

さらに、上記過渡吸収電流および誘導雑音がCMO5集
積回路のラッチアップを起こすトリガーとなるという欠
点があった。
Furthermore, there is a drawback that the transient absorption current and induced noise act as a trigger for latch-up of the CMO5 integrated circuit.

〔発明の目的〕[Purpose of the invention]

本発明はCMO5集積回路の出力高レベル電圧を、TT
L集積回路とのインクフェイスを合せるよう、3〜3.
5 V 4で低下させることにより、上記欠点を解決し
、TTL集積回路と同等な過渡吸収電流および誘導雑音
特性をもたせ、誤動作に強く、ラッチアップにも強くし
たCMO3論理集積回路を提供することにある。
The present invention converts the output high level voltage of the CMO5 integrated circuit into TT
3 to 3 to align the ink face with the L integrated circuit.
To provide a CMO3 logic integrated circuit which solves the above-mentioned drawbacks by lowering the voltage to 5 V4, has transient absorption current and induced noise characteristics equivalent to TTL integrated circuits, is resistant to malfunctions, and is resistant to latch-up. be.

〔発明の構成〕 本発明はpチャンネルMOSトランジスタとnチャンネ
ルMOSトランジスタから構成されたCMOS集積回路
において、pチャンネルMOSトランジスタのドレイン
端子とnチャンネルMOSトランジスタのドレイン端子
とを接続した出力端子に、定電圧ダイオードのカソード
を接続し、該定電圧ダイオードのアノードを接地したこ
とを特徴とするαB論理集積回路、及びCMO5集積回
路において、pチャンネルMOSトランジスタのドレイ
ン端子とnチャンネルMOSトランジスタのドレイン端
子との接続点に、定電圧ダイオードのカソード端子を接
続し、該定電圧ダイオードのアノード端子を出力端子と
したことを特徴とするCMO3論理集積回路である。
[Structure of the Invention] The present invention provides a CMOS integrated circuit composed of a p-channel MOS transistor and an n-channel MOS transistor. In an αB logic integrated circuit and a CMO5 integrated circuit characterized in that the cathode of a voltage diode is connected and the anode of the voltage regulator diode is grounded, the drain terminal of the p-channel MOS transistor and the drain terminal of the n-channel MOS transistor are The CMO3 logic integrated circuit is characterized in that a cathode terminal of a constant voltage diode is connected to the connection point, and an anode terminal of the constant voltage diode is used as an output terminal.

〔実施例〕〔Example〕

次に図面を参照して本発明の実施例について説明する。 Next, embodiments of the present invention will be described with reference to the drawings.

第1図は、本発明の第1の実施例を示す回路図である。FIG. 1 is a circuit diagram showing a first embodiment of the present invention.

第1図に示す本発明に係るCMO5論理集積回路はpチ
ャンネルMOSトランジスタ1のゲート端子Gとnチャ
ンネルMO5トランジスタ2のゲート端子Gとを共通に
接続した入力端子3と、該nチャンネルMOSトランジ
スタ1のドレイン端子りと該nチャンネルMOSトラン
ジスタ2のドレイン端子りとを共通に接続した出力端子
4とを有し、該nチャンネルMOSトランジスタ1のソ
ース端子Sを電源端子5に接続し、該nチャンネルMO
3)ランジスタ2のソース端子Sを接地し、該出力端子
4に定電圧ダイオード6のカソード端子6aを接続し、
該定電圧ダイオード6のアノード端子6bを接地したも
のである。
The CMO5 logic integrated circuit according to the present invention shown in FIG. The drain terminal of the n-channel MOS transistor 2 is connected in common to the output terminal 4, and the source terminal S of the n-channel MOS transistor 1 is connected to the power supply terminal 5. M.O.
3) Ground the source terminal S of the transistor 2, connect the cathode terminal 6a of the constant voltage diode 6 to the output terminal 4,
The anode terminal 6b of the constant voltage diode 6 is grounded.

出力端子4と接地されたソース端子Sとの間に挿入され
た定電圧ダイオード6は、電源端子5に印加した電源電
圧5vに対する出力高レベル電圧(VOH)を3〜8.
51にクランプするよう動作する。
A constant voltage diode 6 inserted between the output terminal 4 and the grounded source terminal S has an output high level voltage (VOH) of 3 to 8.
51.

従来のCMO5集積回路の出力高レベル電圧は電源電圧
にほぼ等しくなるが、本発明の回路では、出力高レベル
電圧(VOH)は3.5V15V = 0.7倍に低減
される。したがって、CMOS集積回路を駆動回路とし
た伝送形態において、過渡吸収電流(ioL)は前記の
如<  1oL= VOH/20  より0.7倍に低
減することができ、CMO3集積回路の出力トランジス
タの面積も0.7倍に比例して小さくすることができる
The output high level voltage of the conventional CMO5 integrated circuit is approximately equal to the power supply voltage, but in the circuit of the present invention, the output high level voltage (VOH) is reduced to 3.5V15V=0.7 times. Therefore, in a transmission mode using a CMOS integrated circuit as a driving circuit, the transient absorption current (ioL) can be reduced to 0.7 times from < 1oL = VOH/20 as described above, and the area of the output transistor of the CMO3 integrated circuit can be reduced by 0.7 times. can also be reduced in proportion to 0.7 times.

また、誘導雑音は出力高レベル電圧(VOH)に比例す
ることから、従来のCMO5集積回路に比べて0.7倍
に低減することができる。
Furthermore, since the induced noise is proportional to the output high level voltage (VOH), it can be reduced by 0.7 times compared to the conventional CMO5 integrated circuit.

第2図は、本発明の第2の実施例を示す回路図である。FIG. 2 is a circuit diagram showing a second embodiment of the invention.

第2図に示す本発明のCMO3論理集積回路はpチャン
ネルMOSトランジスタlのゲート端子Gとnチャンネ
ルMOSトランジスタ2のゲート端子Gとを共通に接続
した入力端子3と、該nチャンネルMO3)ランジスタ
1のドレイン端子りと該nチャンネルMOSトランジス
タ2のドレイン端子りとを共通に接続した接続点Cとを
有し、接続点Cに定電圧ダイオード6のカソード6aヲ
接続し該定電圧ダイオード6のアノード端子6bを出力
端子4に接続し、該nチャンネルMOSトランジスタl
のソース端子Sを電源端子5に接続し、該nチャンネル
MQS トランジスタ2のソース端子Sを接地したもの
である。
The CMO3 logic integrated circuit of the present invention shown in FIG. and the drain terminal of the n-channel MOS transistor 2 are connected in common, and the cathode 6a of the voltage regulator diode 6 is connected to the connection point C, and the anode of the voltage regulator diode 6 is connected to the node C. The terminal 6b is connected to the output terminal 4, and the n-channel MOS transistor l
The source terminal S of the n-channel MQS transistor 2 is connected to the power supply terminal 5, and the source terminal S of the n-channel MQS transistor 2 is grounded.

定電圧ダイオード6は、電源端子5に印加された電源電
圧5Vに対する出力高レベル電圧(VOH)を3〜8.
5vにレベルシフトするよう動作する。本発明の回路で
は出力高レベル電圧(VOH)を0.7倍に低減でき、
第1図と同様の効果が得られる・〔発明の効果〕 本発明は、以上説明したように定電圧ダイオードによる
クランプ特性およびレベルシフト特性を使用して、従来
のCMO5集積回路の出力高レベル電圧を約0.7倍に
低減することにより、CMO5集積回路を駆動回路とし
た伝送形態における過渡吸収電流および誘導雑音を約0
.7倍に低減でき、誤動作の発生する確率を少くしてラ
ッチアップを起こす確率を少なくできる。また、過渡吸
収電流の低減により、従来の出力トランジスタの面積を
0.7倍に比例して小さくすることができる効果を有す
るものである。
The constant voltage diode 6 has an output high level voltage (VOH) of 3 to 8.
It operates to shift the level to 5v. The circuit of the present invention can reduce the output high level voltage (VOH) by 0.7 times,
Effects similar to those shown in FIG. 1 can be obtained. [Effects of the Invention] As explained above, the present invention uses the clamping characteristics and level shift characteristics of the constant voltage diode to reduce the output high level voltage of the conventional CMO5 integrated circuit. By reducing the current by approximately 0.7 times, the transient absorption current and induced noise in a transmission format using a CMO5 integrated circuit as a driving circuit can be reduced to approximately 0.
.. This can be reduced by a factor of 7, reducing the probability of malfunctions and the probability of latch-up occurring. Further, by reducing the transient absorption current, the area of the conventional output transistor can be reduced in proportion to 0.7 times.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の第1の実施例を示す回路図、第2図は
本発明の第2の実施例を示す回路図であ1 pチャンネ
ルMOSトランジスタ、2 nチャンネルMO8l−ラ
ンジスタ、3・・入力端子、4・・・出力端子、5・・
電源端子、6・・定電圧ダイ−オード。 第1図 第2図
FIG. 1 is a circuit diagram showing a first embodiment of the invention, and FIG. 2 is a circuit diagram showing a second embodiment of the invention. 1 p-channel MOS transistor, 2 n-channel MO8l-transistor, 3.・Input terminal, 4... Output terminal, 5...
Power supply terminal, 6... Constant voltage diode. Figure 1 Figure 2

Claims (2)

【特許請求の範囲】[Claims] (1)pチャンネルMOSトランジスタとnチャンネル
MOSトランジスタとから構成されたCMOS集積回路
において、pチャンネルMOSトランジスタのドレイン
端子とnチャンネルMOSトランジスタのドレイン端子
とを接続した出力端子に、定電圧ダイオードのカソード
を接続し、該定電圧ダイオードのアノードを接地したこ
とを特徴とするCMOS論理集積回路。
(1) In a CMOS integrated circuit composed of a p-channel MOS transistor and an n-channel MOS transistor, the cathode of a constant voltage diode is connected to the output terminal connecting the drain terminal of the p-channel MOS transistor and the drain terminal of the n-channel MOS transistor. A CMOS logic integrated circuit, characterized in that the anode of the constant voltage diode is grounded.
(2)pチャンネルMOSトランジスタとnチャンネル
MOSトランジスタとから構成されたCMOS集積回路
において、pチャンネルMOSトランジスタのドレイン
端子とnチャンネルMOSトランジスタのドレイン端子
との接続点に、定電圧ダイオードのカソード端子を接続
し、該定電圧ダイオードのアノード端子を出力端子とし
たことを特徴とするCMOS論理集積回路。
(2) In a CMOS integrated circuit composed of a p-channel MOS transistor and an n-channel MOS transistor, the cathode terminal of a constant voltage diode is connected to the connection point between the drain terminal of the p-channel MOS transistor and the drain terminal of the n-channel MOS transistor. A CMOS logic integrated circuit characterized in that the anode terminal of the constant voltage diode is used as an output terminal.
JP59123094A 1984-06-15 1984-06-15 Cmos logic integrated circuit Pending JPS612424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59123094A JPS612424A (en) 1984-06-15 1984-06-15 Cmos logic integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59123094A JPS612424A (en) 1984-06-15 1984-06-15 Cmos logic integrated circuit

Publications (1)

Publication Number Publication Date
JPS612424A true JPS612424A (en) 1986-01-08

Family

ID=14852051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59123094A Pending JPS612424A (en) 1984-06-15 1984-06-15 Cmos logic integrated circuit

Country Status (1)

Country Link
JP (1) JPS612424A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100268209B1 (en) * 1996-09-06 2000-10-16 포만 제프리 엘 High reliability i/o stacked fets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100268209B1 (en) * 1996-09-06 2000-10-16 포만 제프리 엘 High reliability i/o stacked fets

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