CN216356675U - Interconnection device between unequal potential chips - Google Patents
Interconnection device between unequal potential chips Download PDFInfo
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- CN216356675U CN216356675U CN202122701776.4U CN202122701776U CN216356675U CN 216356675 U CN216356675 U CN 216356675U CN 202122701776 U CN202122701776 U CN 202122701776U CN 216356675 U CN216356675 U CN 216356675U
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- phototriode
- emitting diode
- optocoupler
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Abstract
The utility model discloses an interconnection device among unequal potential chips, which comprises an optocoupler U1 and an optocoupler U2, wherein the cathode of a light emitting diode in U1 is connected with the TX1 sending end of a first chip, the anode of the light emitting diode in U1 is connected with VCC1 through a resistor R1, the emitter of a phototriode in U1 is grounded, the collector of the phototriode in U1 is divided into two paths, the first path is connected with a power VCC2 through a resistor R2, and the second path is connected with the RX2 receiving end of a second chip; the connecting mode of the optical coupler U2 is similar to that of the optical coupler U1. The device provided by the embodiment of the utility model realizes communication interconnection among the unequal potential chips by using the optocoupler, and has the advantages of small volume, low cost, simple circuit structure and the like.
Description
Technical Field
The utility model relates to the technical field of communication interconnection devices among chips, in particular to an interconnection device among unequal potential chips.
Background
A plurality of chips which need to be powered exist in a PCB, the power supply voltages among the chips are different under many conditions, communication is needed among pins generally, but direct connection cannot be achieved among devices with unequal potentials.
The inventor finds that if the MAX232 chip or the MAX485 chip is used for realizing interconnection between the unequal potential chips, on one hand, the cost is increased, and the size of the chip is large.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is how to provide an interconnection device between unequal potential chips, which has the advantages of simple circuit, low cost and small volume.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: an interconnection device between unequal potential chips comprises an optocoupler U1 and an optocoupler U2, wherein the cathode of a light emitting diode in U1 is connected with the sending end of a TX1 of a first chip, the anode of the light emitting diode in U1 is connected with VCC1 through a resistor R1, the emitter of a phototriode in U1 is grounded, the collector of the phototriode in U1 is divided into two paths, the first path is connected with a power supply VCC2 through a resistor R2, and the second path is connected with the receiving end RX2 of a second chip;
the negative pole of emitting diode is connected with the TX2 sending terminal of second chip among U2, emitting diode's positive pole connects VCC2 through resistance R4 among U2, the projecting pole ground connection of phototriode in U2, the collecting electrode of phototriode is divided into two routes in U2, and first route connects power VCC1 through resistance R3, and the second route is connected with the receiving terminal RX1 of first chip.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the device provided by the embodiment of the utility model realizes communication interconnection among the unequal potential chips by using the optocouplers, and has the advantages of small volume, low cost and simple circuit structure.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic circuit diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, an embodiment of the present invention discloses an interconnection device between unequal potential chips, including an optocoupler U1 and an optocoupler U2, a negative electrode of a light emitting diode in the optocoupler U1 is connected to a TX1 transmitting terminal of a first chip, a positive electrode of the light emitting diode in the optocoupler U1 is connected to VCC1 via a resistor R1, an emitter of a phototriode in the U1 is grounded, a collector of the phototriode in the U1 is divided into two paths, the first path is connected to a power VCC2 via a resistor R2, and the second path is connected to a receiving terminal RX2 of a second chip;
the negative pole of emitting diode is connected with the TX2 sending terminal of second chip among the opto-coupler U2, emitting diode's positive pole connects VCC2 through resistance R4 among the U2, the projecting pole ground connection of phototriode in opto-coupler U2, the collecting electrode of phototriode is divided into two the tunnel in U2, and first route connects power VCC1 through resistance R3, and the second way is connected with the receiving terminal RX1 of first chip.
The working principle is as follows: as shown in fig. 1, U1 and U2 are optical couplers, VCC1 and VCC2 are power supply voltages of the first chip and the second chip, respectively, TX1 is a transmitting end of the first chip, and is isolated and interconnected with a receiving end RX2 of the second chip; TX2 is the transmitting end of the second chip, isolated from the receiving end RX1 of the first chip.
The device provided by the embodiment of the utility model realizes communication interconnection among the unequal potential chips by using the optocouplers, and has the advantages of small volume, low cost and simple circuit structure.
Claims (1)
1. The utility model provides an interconnection device between equipotential chip which characterized in that: the circuit comprises an optocoupler U1 and an optocoupler U2, wherein the cathode of a light emitting diode in U1 is connected with the sending end of a TX1 of a first chip, the anode of the light emitting diode in U1 is connected with VCC1 through a resistor R1, the emitter of a phototriode in U1 is grounded, the collector of the phototriode in U1 is divided into two paths, the first path is connected with a power VCC2 through a resistor R2, and the second path is connected with the receiving end RX2 of a second chip;
the negative pole of emitting diode is connected with the TX2 sending terminal of second chip among U2, emitting diode's positive pole connects VCC2 through resistance R4 among U2, the projecting pole ground connection of phototriode in U2, the collecting electrode of phototriode is divided into two routes in U2, and first route connects power VCC1 through resistance R3, and the second route is connected with the receiving terminal RX1 of first chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122701776.4U CN216356675U (en) | 2021-11-06 | 2021-11-06 | Interconnection device between unequal potential chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122701776.4U CN216356675U (en) | 2021-11-06 | 2021-11-06 | Interconnection device between unequal potential chips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216356675U true CN216356675U (en) | 2022-04-19 |
Family
ID=81135579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122701776.4U Active CN216356675U (en) | 2021-11-06 | 2021-11-06 | Interconnection device between unequal potential chips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216356675U (en) |
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2021
- 2021-11-06 CN CN202122701776.4U patent/CN216356675U/en active Active
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