JPS6473912A - Schmitt circuit - Google Patents
Schmitt circuitInfo
- Publication number
- JPS6473912A JPS6473912A JP62231679A JP23167987A JPS6473912A JP S6473912 A JPS6473912 A JP S6473912A JP 62231679 A JP62231679 A JP 62231679A JP 23167987 A JP23167987 A JP 23167987A JP S6473912 A JPS6473912 A JP S6473912A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- turned
- circuit
- transfer gate
- threshold control
- 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
Abstract
PURPOSE:To provide a different input threshold voltage and hysteresis width in one circuit by adding a threshold control circuit comprising a Schmitt circuit provided with a threshold control terminal as an external terminal. CONSTITUTION:In giving a low level signal to a threshold control terminal 4, a 1st transfer gate 19 is turned on and a 2nd transfer gate 20 is turned off. Thus, a 1st level voltage VL1 fed to the gate 19 is given to a terminal 15. On the other hand, in giving a high level signal to the threshold control terminal 4, a 2nd transfer gate 20 is turned on and the 1st transfer gate 19 is turned off. Thus, a 2nd low level voltage VL2 fed to the gate 19 is given to the terminal 15. Thus, a low level threshold voltage VthL of the Schmitt circuit is varied properly with a control signal given to the threshold control terminal 4 in this way and the operation in response to the circuit state is attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62231679A JPS6473912A (en) | 1987-09-16 | 1987-09-16 | Schmitt circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62231679A JPS6473912A (en) | 1987-09-16 | 1987-09-16 | Schmitt circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6473912A true JPS6473912A (en) | 1989-03-20 |
Family
ID=16927288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62231679A Pending JPS6473912A (en) | 1987-09-16 | 1987-09-16 | Schmitt circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6473912A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0449623A2 (en) * | 1990-03-28 | 1991-10-02 | Nec Corporation | Integrated circuit device for RS-232C line receiver |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5546384B2 (en) * | 1975-07-02 | 1980-11-22 | ||
JPS5854132B2 (en) * | 1978-11-10 | 1983-12-02 | 旭化成株式会社 | Lymphocyte separation device |
JPS59141823A (en) * | 1983-02-02 | 1984-08-14 | Nec Corp | Comparator |
-
1987
- 1987-09-16 JP JP62231679A patent/JPS6473912A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5546384B2 (en) * | 1975-07-02 | 1980-11-22 | ||
JPS5854132B2 (en) * | 1978-11-10 | 1983-12-02 | 旭化成株式会社 | Lymphocyte separation device |
JPS59141823A (en) * | 1983-02-02 | 1984-08-14 | Nec Corp | Comparator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0449623A2 (en) * | 1990-03-28 | 1991-10-02 | Nec Corporation | Integrated circuit device for RS-232C line receiver |
EP0449623A3 (en) * | 1990-03-28 | 1992-01-08 | Nec Corporation | Integrated circuit device for rs-232c line receiver |
US5327463A (en) * | 1990-03-28 | 1994-07-05 | Nec Corporation | Integrated circuit device for RS-232C line receiver |
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