JPS55110966A - Driver circuit - Google Patents
Driver circuitInfo
- Publication number
- JPS55110966A JPS55110966A JP1882479A JP1882479A JPS55110966A JP S55110966 A JPS55110966 A JP S55110966A JP 1882479 A JP1882479 A JP 1882479A JP 1882479 A JP1882479 A JP 1882479A JP S55110966 A JPS55110966 A JP S55110966A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- driver circuit
- load current
- output
- allowable level
- 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
Links
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
PURPOSE: To prevent the driver circuit from overcurrent flowing by making the output of the driver circuit higher in the impedance when the load current flowing to the circuit of a test evaluation device in the semi-conductor integrated circuit exceeds the allowable level.
CONSTITUTION: The load current I0 flowing through the driver circuit 1 is obtained by detecting the differential voltage across the series resistor 2 connected between the driver circuit 1 and the tested semiconductor integrated circuit. The controlling circuit 7 determines whether the load current I0 exceeds the allowable level IL set by the circuit 6 or not. When I0>IL, the output signal of the circuit 7 and the input/output change-over signal is applied to an OR gate 8. This makes the output impedance of the driver circuit 1 higher not only at the output mode of the DUT terminal 4 but also when the load current I0 exceeding the allowable level IL flows whereby the load current is cut off to protect the driver circuit 1.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1882479A JPS55110966A (en) | 1979-02-20 | 1979-02-20 | Driver circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1882479A JPS55110966A (en) | 1979-02-20 | 1979-02-20 | Driver circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110966A true JPS55110966A (en) | 1980-08-27 |
Family
ID=11982300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1882479A Pending JPS55110966A (en) | 1979-02-20 | 1979-02-20 | Driver circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110966A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10603235B2 (en) | 2013-03-15 | 2020-03-31 | Hillenbrand Management Company Llc | Patient repositioning system |
-
1979
- 1979-02-20 JP JP1882479A patent/JPS55110966A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10603235B2 (en) | 2013-03-15 | 2020-03-31 | Hillenbrand Management Company Llc | Patient repositioning system |
US11026853B2 (en) | 2013-03-15 | 2021-06-08 | Hillenbrand Management Company Llc | Patient repositioning system |
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