MAX3078EESA+ - 3.3V RS-485/RS-422 ESD Transceiver
MPN: MAX3078EESA+ ✓ Hoạt độngMAX3078EESA+ Tóm tắt
An RS-485/RS-422 transceiver is an interface IC that converts between logic-level signals and balanced differential line signals. In the RS-485 mode, the differential bus supports communication between multiple nodes when the system is properly terminated and biased. In RS-422 mode, the device provides a balanced driver and receiver for point-to-point links. The MAX3078EESA+ is part of the broader interface-IC hierarchy and supports both standards in one compact device.
Key verified features include ±15kV ESD protection on the bus-facing pins, fail-safe receiver operation that guarantees a logic-high output when receiver inputs are open or shorted, and hot-swap capability designed to eliminate false bus transitions during power-up or hot insertion. The device operates from a 2.97V to 3.63V supply range and contains one driver and one receiver. Manufacturer data describes a supply current of 800µA when unloaded or when fully loaded with the drivers disabled.
The MAX3078EESA+ is suitable for industrial controllers, instrumentation links, data acquisition systems, building automation equipment, and embedded communications networks. Its 3.3V supply operation aligns with modern low-voltage digital systems, while the ESD protection and fail-safe circuitry help improve interface reliability in electrically noisy environments. The 8-pin SOIC package supports conventional surface-mount PCB assembly.
When laying out a MAX3078EESA+ circuit, keep the bus traces short and controlled, provide the required termination and fail-safe bias network at the appropriate bus locations, and route high-energy transient paths away from sensitive logic. Verify the receiver and driver enable polarity against the system controller because the available control and interface details are not fully specified in the provided verified excerpts.
This page combines the verified manufacturer and distributor descriptions with practical RS-485/RS-422 design guidance, package information, selection criteria, and engineering-oriented caveats. Unavailable detailed electrical limits are explicitly marked rather than inferred, allowing designers to validate them against the complete manufacturer datasheet before release to production.
Bộ thay thế dễ dàng lắp đặt cho MAX3078EESA+ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX3078EESA+ (cùng hình factor và footprint) — khác nhau ở Package, ESD Protection, Fail-Safe Receiver, RoHS Status, Supply Voltage Range.
MAX3078EESA+T
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX3078EASA+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX3078EESA
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX3076EESD+T
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX3075EESA+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX3078EESA+ Thông số kỹ thuật
| Product Type | RS-485/RS-422 transceiver |
| Supply Voltage Range | 2.97V to 3.63V |
| Driver Count | 1 |
| Receiver Count | 1 |
| Interface Standards | RS-485 and RS-422 |
| ESD Protection | ±15kV |
| Fail-Safe Receiver | Logic-high output when receiver inputs are open or shorted |
| Hot-Swap Capability | Supported |
| Unloaded Supply Current | 800µA |
| Supply Current With Drivers Disabled | 800µA when fully loaded |
| Hộp | 8-pin SOIC |
| Kiểu lắp đặt | Surface mount |
| DigiKey Listing Package | 8-SOIC |
| Manufacturer Product Status | PRODUCTION |
| Manufacturer Data Sheet Revision | Rev. 5 |
Hướng dẫn cấu hình chân MAX3078EESA+ 8-soic
Cấu hình chân cho MAX3078EESA+ (8-soic gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho MAX3078EESA+.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MAX3078EESA+ phù hợp cho 6 Áp dụngs: Industrial RS-485 Control Networks, Building Automation Interfaces, Data Acquisition and Instrumentation, Embedded Communication Ports, Remote Sensor and Actuator Links, Low-Voltage RS-422 Point-to-Point Links.
Industrial RS-485 Control Networks
The MAX3078EESA+ fits industrial control and sensor networks that use balanced differential RS-485 signaling at a 2.97V-to-3.63V supply. Its one-driver, one-receiver arrangement supports a compact node interface, while ±15kV ESD protection and fail-safe receiver behavior help improve robustness against cable-borne transients and wiring faults. The circuit should use a defined bus topology, appropriate termination, and a bias strategy that keeps the receiver output valid when the bus is idle.
Được đề xuất
Building Automation Interfaces
Use the MAX3078EESA+ in building-automation equipment where controllers communicate with sensors, actuators, and distributed I/O over RS-485. The 3.3V supply operation can simplify integration with low-voltage embedded controllers, and the verified hot-swap capability helps reduce false transitions during power-up or hot insertion. Because automation cables can be long and exposed to nearby switching equipment, controlled routing, grounding, termination, and verified ESD behavior are important design requirements.
Được đề xuất
Data Acquisition and Instrumentation
The MAX3078EESA+ is appropriate for measurement and data-acquisition equipment that needs a compact differential bus interface between an embedded controller and remote instrumentation. Fail-safe receiver operation is useful when the bus may be disconnected or shorted, while the one-driver, one-receiver arrangement provides a straightforward node connection. Confirm signal levels, slew behavior, and timing against the complete data sheet before defining the maximum cable length and data rate.
Được đề xuất
Embedded Communication Ports
The MAX3078EESA+ can provide a low-voltage balanced communication port for embedded control boards. Its 2.97V-to-3.63V operating range aligns with 3.3V digital systems, and the 8-pin SOIC package simplifies surface-mount assembly and PCB footprint planning. In a new design, verify the exact driver-enable and receiver-enable pin functions, power-up behavior, and bus idle behavior from the manufacturer pinout rather than relying on the package name alone.
Được đề xuất
Remote Sensor and Actuator Links
For remote sensor and actuator networks, the MAX3078EESA+ offers a compact way to connect a controller to balanced field-bus wiring. Its verified ESD protection is relevant when field wiring connects to externally accessible equipment, and the fail-safe receiver provides a defined high state for open or shorted receiver inputs. The application must still validate cable length, topology, grounding, protection placement, and communication timing against the complete manufacturer specification.
Được đề xuất
Low-Voltage RS-422 Point-to-Point Links
The MAX3078EESA+ can also serve RS-422 point-to-point links because the verified device description identifies both RS-485 and RS-422 support. The 3.3V supply range is useful for compact industrial and embedded systems, and the one-driver, one-receiver configuration provides a balanced link without requiring a multi-drop bus arrangement. Confirm the exact receiver thresholds, driver output capability, and enable controls in the complete data sheet before setting baud rate and cable length.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX3078EESA+ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MAX3078EESA+T | MAX3078EASA+ | MAX3076EESD+ | MAX3075EESA+ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-pin SOIC | 8-SOIC | 8-pin SOIC | 14-pin NSOIC | 8-pin SOIC |
Bảo phân biệt quan trọng
- 3.3V-class supply operation (vsMAX3076EESD+)
- Compact 8-pin SOIC implementation (vsMAX3076EESD+)
- Verified fail-safe and hot-swap features (vsMAX3075EESA+)
Ghi chú thiết kế
Route the RS-485/RS-422 differential pair as a closely coupled pair with substantially equal length and geometry, and connect the receiver and transceiver ground to the system ground with a low-impedance path. Avoid crossing the bus with switching traces or routing it beneath noisy power stages. Because the provided verified data does not specify a complete trace-impedance or spacing recommendation, confirm the applicable values from the complete MAX3078E data sheet and the system’s cable and grounding requirements.
Do not assume that every related MAX3078E suffix is automatically interchangeable. The verified results show MAX3078EESA+, MAX3078EESA+T, MAX3078EASA+, MAX3076EESD+, and MAX3075EESA+, but the excerpts do not provide complete pin assignments, enable polarity, or electrical limits for each variant. Confirm package dimensions, pin names, supply limits, receiver thresholds, driver enable behavior, and ESD configuration before approving a substitution.
Place termination and fail-safe bias components at the locations required by the selected RS-485 topology rather than scattering them across the bus. For RS-422 point-to-point links, use the termination arrangement specified by the complete system interface requirements. Keep the bus-side protection and transceiver ground return paths short, and validate the implementation with cable-length, baud-rate, common-mode, and hot-plug tests.
Thông tin tuân thủ
The provided verified excerpts identify the manufacturer, product status, interface function, ESD protection, package, and supply information but do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status.