MAX14854GWE+ - 25Mbps Isolated RS-485/RS-422 | Analog Devices
MPN： MAX14854GWE+ ✓ 啟用中MAX14854GWE+ 概覽
An isolated RS-485/RS-422 transceiver is an interface IC that translates logic-level signals into differential cable signals while providing galvanic isolation between equipment domains. Galvanic isolation breaks ground loops, reduces common-mode noise, and protects low-voltage UART electronics from cable-side transients. This makes the MAX14854GWE+ suitable for industrial communication, test equipment, building controls, and systems where the host and cable grounds may be at different potentials.
The device supports operation from 1.71V to 5.5V, data rates up to 25Mbps in the high-speed mode, and lower-rate operation down to 500kbps according to the manufacturer product description. Its full-duplex architecture supports separate transmit and receive paths, while the integrated isolation barrier provides 2750V RMS for 60 seconds. The cable interface includes ±35kV ESD protection, a significant advantage in connector environments where electrostatic discharge is a recurring threat.
The MAX14854 family is designed for robust differential serial communication where isolated voltage levels and high data throughput are both important. The MAX14854GWE+ combines an integrated isolation barrier with RS-485/RS-422 driver and receiver functions, reducing the number of external isolation components required. Its wide-body SOIC package is intended for surface-mount industrial equipment and is compatible with automated assembly.
Typical applications include industrial RS-485 links, isolated UART bridges, factory equipment interfaces, building automation, instrumentation, and communications between controllers and remote sensors. The full-duplex configuration is especially useful when simultaneous transmit and receive operation is required, while the isolation rating supports dependable communication across equipment boundaries.
Designers should verify supply voltage, baud-rate mode, termination, fail-safe biasing, isolation requirements, and cable-side protection before layout. Place the isolation-related components and differential traces according to the manufacturer datasheet, and keep the logic-side and cable-side ground domains physically separated. The MAX14854GWE+ is an active, leaded surface-mount device identified by the GWE+ ordering suffix.
直接替換替代品，適用於 MAX14854GWE+ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX14854GWE+ （相同外形與佔位） — 差異在於 Package, Number of Channels, Function, Maximum Data Rate, Operating Temperature.
MAX14852GWE+
✅ 直接替換聯絡詢價
查看資料表 →ISO8200BTR
✅ 直接替換聯絡詢價
查看資料表 →ISO7762FDWR
✅ 直接替換聯絡詢價
查看資料表 →MAX14850ASE+
✅ 直接替換聯絡詢價
查看資料表 →HCPL-2212-500E
✅ 直接替換聯絡詢價
查看資料表 →MAX14854GWE+ 規格
| Product Type | Isolated full-duplex RS-485/RS-422 transceiver |
| Supply Voltage Range | 1.71V to 5.5V |
| Maximum Data Rate | 25Mbps |
| Low-Speed Data Rate | 500kbps |
| Galvanic Isolation | 2.75kV RMS for 60 seconds |
| ESD Protection | ±35kV |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Duplex Mode | Full duplex |
| Supported Protocols | RS-485 and RS-422 |
| 封裝 | 16-pin WSOIC |
| 安裝類型 | Surface mount |
MAX14854GWE+ 腳位配置
| 腳位 1 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 2 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 3 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 4 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 5 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 6 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 7 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 8 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 9 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 10 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 11 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 12 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 13 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 14 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 15 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
| 腳位 16 | [DATA_NEEDED: pin name] — Pin assignment must be verified from the manufacturer datasheet |
典型應用
MAX14854GWE+ 適用於 6 應用s: Isolated Industrial RS-485 Links, Factory Automation and Sensor Networks, Building Automation Networks, Instrumentation and Test Equipment, UART-to-RS-485 Bridges, Long-Cable Industrial Communications.
Isolated Industrial RS-485 Links
The MAX14854GWE+ fits isolated industrial links because it combines RS-485/RS-422 full-duplex operation with a 2.75kV RMS isolation barrier. Place it between a controller UART and a field cable when equipment grounds may differ or when ground-loop noise could affect communication. The 1.71V to 5.5V supply range supports embedded and 5V systems, while ±35kV ESD protection improves tolerance at exposed connector locations. Confirm termination, fail-safe biasing, and the supported baud-rate mode in the manufacturer datasheet.
推薦
Factory Automation and Sensor Networks
The MAX14854GWE+ is suitable for factory automation systems that distribute control or measurement data over long RS-485 or RS-422 cables. Its full-duplex architecture supports separate transmit and receive paths, which can simplify communications between a controller and remote sensor or actuator nodes. The isolation barrier helps prevent ground-potential differences between machinery and the controller from propagating into the UART electronics. Use the 16-pin WSOIC footprint and follow the datasheet layout guidance for isolation clearance and cable-side routing.
推薦
Building Automation Networks
The MAX14854GWE+ can be used in building-automation equipment where a controller communicates with remote modules across RS-485 or RS-422 wiring. Galvanic isolation helps the controller withstand ground offsets between distributed building electronics, and ±35kV ESD protection is useful where cables connect through accessible connectors. The device supports operation from 1.71V to 5.5V, enabling use in both low-voltage control boards and conventional industrial interfaces. Select the appropriate baud rate, termination, and grounding strategy for the installed cable length.
推薦
Instrumentation and Test Equipment
The MAX14854GWE+ is appropriate for instrumentation that communicates with remote measurement equipment over a differential bus. Its isolated full-duplex interface helps separate the sensitive instrument electronics from the cable environment, while the 25Mbps capability supports high-rate control or data paths when the system configuration permits it. The 1.71V to 5.5V operating range is useful for mixed-voltage designs. Designers should verify timing, input thresholds, termination, and isolation capacitance against the complete instrument architecture.
推薦
UART-to-RS-485 Bridges
The MAX14854GWE+ works as the physical-layer companion for a microcontroller UART when the target system requires isolated RS-485 or RS-422 communication. Its one-driver, one-receiver full-duplex arrangement can support bidirectional point-to-point links, while the isolation barrier keeps the cable-side return current separate from the logic side. The 16-pin WSOIC package is practical for automated PCB assembly. Firmware must match the electrical mode, baud rate, termination, and any idle-state or fail-safe requirements.
推薦
Long-Cable Industrial Communications
The MAX14854GWE+ supports industrial communication links where cable transients and ground differences are expected. Its ±35kV ESD protection adds a layer of protection for the cable interface, while 2.75kV RMS isolation helps protect the host electronics. The 25Mbps maximum data rate provides headroom for high-speed links, although actual distance and baud rate are strongly influenced by cable characteristics, termination, topology, and transceiver timing. Use the manufacturer’s RS-485/RS-422 guidance to establish the final network design.
推薦
推薦產品摘要
工程參考資料，適用於 MAX14854GWE+ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX14852GWE+ | ISO8200BTR | ISO7762FDWR | MAX14850ASE+ | HCPL-2212-500E |
|---|---|---|---|---|---|---|
| Package | 16-pin WSOIC | 16-pin WSOIC | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | Analog Devices | Broadcom |
主要差異化特點
- Integrated high-speed differential communication (對比HCPL-2212-500E)
- Cable-side transient protection (對比MAX14852GWE+)
- System isolation for ground-offset environments (對比Non-isolated RS-485 transceiver)
設計說明
Keep the UART-side and cable-side ground domains separated according to the manufacturer isolation-layout guidance. Route the differential RS-485/RS-422 pair as a matched pair, minimize stubs, and place termination components at the physical ends of the cable. Do not allow isolation-barrier copper or fast external signals to cross between the two ground domains.
Do not assume that a 16-pin SOIC footprint alone proves replacement compatibility. Verify pin names, isolation-side supply connections, driver enable behavior, receiver thresholds, data-rate mode, and termination requirements against the original schematic. The MAX14854GWE+ is isolated, so a board designed for a non-isolated transceiver may require different components and a revised creepage strategy.
For industrial cables, combine the transceiver’s ±35kV ESD protection with connector-level layout practices. Keep the cable connector, protection network, and transceiver input path tightly coordinated, and use a controlled ground reference for the cable side. Isolation reduces ground-loop current, but it does not eliminate radiated emissions or conducted noise from external equipment.
合規資訊
The supplied verified data identifies the product as an active isolated interface IC but does not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements.
