JPS5657136A - Semiconductor logical operation circuit - Google Patents

Semiconductor logical operation circuit

Info

Publication number
JPS5657136A
JPS5657136A JP13330979A JP13330979A JPS5657136A JP S5657136 A JPS5657136 A JP S5657136A JP 13330979 A JP13330979 A JP 13330979A JP 13330979 A JP13330979 A JP 13330979A JP S5657136 A JPS5657136 A JP S5657136A
Authority
JP
Japan
Prior art keywords
vee
circuit
power supply
power sources
power
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
JP13330979A
Other languages
Japanese (ja)
Other versions
JPS6144334B2 (en
Inventor
Akira Yamagiwa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13330979A priority Critical patent/JPS5657136A/en
Publication of JPS5657136A publication Critical patent/JPS5657136A/en
Publication of JPS6144334B2 publication Critical patent/JPS6144334B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to extract simply latent defects in the large-scale integrated logical operation circuit equipped with a power supply compensating circuit, by switching giving the same change to power sources of the bias generating circuit and giving independent change to them.
CONSTITUTION: Bias generating circuit 10 to compensate power supply of the extra-high speed logical operation circuit is provided. At the normal operation time, switch SW is so closed that power sources VEE and VEE' may have the same change, thereby compensating power supply. In case that the power supply operation margin test for defect extraction is performed, switch SW is opened to change power sources VEE and VEE' independently of each other. Since resistance RE connected to current source transistor Q3 is connected to power source VEE though circuit 10 generates constant voltage VCS on a basis of power source VEE, the current value of the current switch is increased or reduced to be able to perform the operation margin test by changing potentials of power sources VEE and VEE' properly independently of each other. As a result, latent defects can be extracted simply.
COPYRIGHT: (C)1981,JPO&Japio
JP13330979A 1979-10-16 1979-10-16 Semiconductor logical operation circuit Granted JPS5657136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13330979A JPS5657136A (en) 1979-10-16 1979-10-16 Semiconductor logical operation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13330979A JPS5657136A (en) 1979-10-16 1979-10-16 Semiconductor logical operation circuit

Publications (2)

Publication Number Publication Date
JPS5657136A true JPS5657136A (en) 1981-05-19
JPS6144334B2 JPS6144334B2 (en) 1986-10-02

Family

ID=15101650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13330979A Granted JPS5657136A (en) 1979-10-16 1979-10-16 Semiconductor logical operation circuit

Country Status (1)

Country Link
JP (1) JPS5657136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302892A (en) * 1991-09-12 1994-04-12 Mitsubishi Denki Kabushiki Kaisha Semiconductor integrated circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302892A (en) * 1991-09-12 1994-04-12 Mitsubishi Denki Kabushiki Kaisha Semiconductor integrated circuit

Also Published As

Publication number Publication date
JPS6144334B2 (en) 1986-10-02

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