JPS566534A - Level converting circuit - Google Patents
Level converting circuitInfo
- Publication number
- JPS566534A JPS566534A JP8135179A JP8135179A JPS566534A JP S566534 A JPS566534 A JP S566534A JP 8135179 A JP8135179 A JP 8135179A JP 8135179 A JP8135179 A JP 8135179A JP S566534 A JPS566534 A JP S566534A
- Authority
- JP
- Japan
- Prior art keywords
- level
- transistor
- current
- output
- converting circuit
- 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
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
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/018—Coupling arrangements; Interface arrangements using bipolar transistors only
- H03K19/01806—Interface arrangements
- H03K19/01812—Interface arrangements with at least one differential stage
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Manipulation Of Pulses (AREA)
- Logic Circuits (AREA)
Abstract
PURPOSE:To prevent the undesired level output by setting the output level of the level converting circuit forcedly to the level of one side when the power voltage becomes to the prescribed level or less. CONSTITUTION:When negative power voltage VEE becomes to a small voltage level in terms of the absolute value, no sufficient bias current is supplied to transistor Q10 at bias part 3. And thus the emitter current of Q10 is reduced, and accordingly the collector current is reduced for the collector of constant current transistor Q15 at level converting part 1. And the low-level potential of node N1 increases. Thus transistors Q18 and Q19 start conduction in case transistor Q13 is turned on by the emitter-coupled logic signal of input A. Then the level of output terminal P2 is turned forcedly to a low level.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8135179A JPS566534A (en) | 1979-06-29 | 1979-06-29 | Level converting circuit |
US06/157,853 US4356409A (en) | 1979-06-29 | 1980-06-09 | Level conversion circuit |
DE19803024274 DE3024274A1 (en) | 1979-06-29 | 1980-06-27 | LEVEL CONVERTER CONTROL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8135179A JPS566534A (en) | 1979-06-29 | 1979-06-29 | Level converting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS566534A true JPS566534A (en) | 1981-01-23 |
Family
ID=13743938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8135179A Pending JPS566534A (en) | 1979-06-29 | 1979-06-29 | Level converting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS566534A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5975720A (en) * | 1982-10-25 | 1984-04-28 | Seiko Instr & Electronics Ltd | Semiconductor device |
JPS6096600A (en) * | 1983-10-28 | 1985-05-30 | Toshiba Corp | Lithium tantalate single crystal |
JPS6157120A (en) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | Ttl circuit with protection circuit |
JPH03183677A (en) * | 1980-10-02 | 1991-08-09 | Xerox Corp | Formation of electro-optical guided wave layer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49112530A (en) * | 1973-02-23 | 1974-10-26 | ||
JPS51120143A (en) * | 1975-03-26 | 1976-10-21 | Honeywell Inf Systems | Logical level translator |
JPS54945A (en) * | 1977-06-06 | 1979-01-06 | Nec Corp | Integrated circuit providing output control function |
-
1979
- 1979-06-29 JP JP8135179A patent/JPS566534A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49112530A (en) * | 1973-02-23 | 1974-10-26 | ||
JPS51120143A (en) * | 1975-03-26 | 1976-10-21 | Honeywell Inf Systems | Logical level translator |
JPS54945A (en) * | 1977-06-06 | 1979-01-06 | Nec Corp | Integrated circuit providing output control function |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03183677A (en) * | 1980-10-02 | 1991-08-09 | Xerox Corp | Formation of electro-optical guided wave layer |
JPS5975720A (en) * | 1982-10-25 | 1984-04-28 | Seiko Instr & Electronics Ltd | Semiconductor device |
JPS6096600A (en) * | 1983-10-28 | 1985-05-30 | Toshiba Corp | Lithium tantalate single crystal |
JPS6157120A (en) * | 1984-08-29 | 1986-03-24 | Fujitsu Ltd | Ttl circuit with protection circuit |
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