MAX3483CPA+ - 3.3V 250kbps RS-485 Transceiver | Analog Devices
MPN： MAX3483CPA+ ✓ 啟用中MAX3483CPA+ 概覽
An RS-485 transceiver is an interface IC that converts digital logic-level signals into differential bus signals and converts received differential signals back into logic-level data. RS-485 is commonly used for longer-distance, noise-tolerant industrial communication, while RS-422 provides a related differential signaling method. The MAX3483CPA+ belongs to the interface IC hierarchy: transceiver, communication interface, interface IC, and semiconductor.
Its key verified features include one transmitter and one receiver, 250kbps operation, 3.3V operation, half-duplex communication, 50mV receiver hysteresis, and slew-rate-limited signaling. These characteristics suit equipment interfaces, industrial control links, instrumentation, and embedded systems that require a compact, low-power differential bus interface. The slew-rate-limited driver is particularly useful when longer cables or imperfect terminations create reflection concerns.
The MAX3483CPA+ uses a true differential bus architecture rather than a single-ended logic output. Designers must still provide the correct bus topology, cable termination, common-mode handling, grounding, and protection for their installation. The driver and receiver are combined in one package, but the bus interface still requires external application-specific components such as termination resistors, protection devices, and decoupling capacitors.
Typical applications include industrial automation, factory equipment, building controls, process monitoring, data acquisition, and embedded communications. A half-duplex arrangement allows the same pair of conductors to transmit and receive, although software or hardware flow control is needed to prevent simultaneous transmission and reception. The verified sources identify the MAX3483 family as low-power 3.3V transceivers, but detailed electrical limits, absolute maximum ratings, and pin-level values are not supplied in the prompt.
For a new design, verify the complete manufacturer datasheet for supply tolerance, input and output thresholds, driver current, receiver sensitivity, timing, temperature limits, and ESD information before committing to the PCB. This page distinguishes verified product facts from unavailable parameters and does not infer specifications that were not present in the supplied data.
直接替換替代品，適用於 MAX3483CPA+ — 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。
MAX3483ECPA+
✅ 直接替換聯絡詢價
查看資料表 →MAX3483ECPA
✅ 直接替換📋 參考替代品（不在目錄中）
MAX3483CPA
✅ 直接替換📋 參考替代品（不在目錄中）
SP3483EP-L
✅ 直接替換📋 參考替代品（不在目錄中）
MAX3485EPA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX3483CPA+ 規格
| Product Type | RS-485/RS-422 transceiver |
| 供應電壓 | 3.0 V to 3.6 V |
| 資料速率 | 250 kbps |
| Driver Count | 1 |
| Receiver Count | 1 |
| Duplex Mode | Half-duplex |
| Receiver Hysteresis | 50 mV |
| Protocols | RS-422 and RS-485 |
| Slew-Rate-Limited Driver | Yes |
| 工作溫度 | 0C to 70C |
| 安裝類型 | Through hole |
| 封裝 | 8-pin PDIP |
| Logic Direction | Single transmitter and single receiver |
| Driver Architecture | True differential RS-485/RS-422 |
| EMI Behavior | Slew-rate limiting minimizes EMI |
| Cable Reflection Control | Slew-rate limiting helps reduce reflections |
MAX3483CPA+ 8-pin pdip 腳位配置指南
MAX3483CPA+（8-pin pdip 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： MAX3483CPA+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX3483CPA+ 適用於 6 應用s: Industrial Automation Bus, Building Control Network, Data Acquisition Equipment, Embedded Serial Communication, Process Monitoring, Instrument Communication Interface.
Industrial Automation Bus
The MAX3483CPA+ fits industrial automation links that need a low-power differential interface at 250kbps or below. Its one-driver, one-receiver arrangement supports a half-duplex RS-485 network, while the slew-rate-limited driver helps limit high-frequency EMI on factory wiring. The 3.0V to 3.6V supply aligns with modern controller rails. A design should add the termination, protection, and grounding required by the actual cable length and topology, then verify the controller UART timing against the complete transceiver data sheet.
推薦
Building Control Network
MAX3483CPA+ can be used in building-control equipment that communicates over a wired differential bus, such as a controller, sensor gateway, or remote I/O module. The 250kbps rate is appropriate for many control and monitoring messages, and the 3.3V operation simplifies interfacing with low-voltage digital logic. Because the verified temperature range is 0C to 70C, indoor commercial equipment is a better initial fit than harsh outdoor equipment unless the manufacturer data and system thermal design are separately reviewed.
推薦
Data Acquisition Equipment
The MAX3483CPA+ is suitable for data-acquisition equipment that must move commands or measurements between a controller and a remote instrument over an RS-485 or RS-422 connection. Its 250kbps maximum listed rate is more than adequate for many low-bandwidth measurement systems, while the half-duplex arrangement conserves wiring. Use controlled edge rates, proper cable termination, and grounded protection to maintain signal integrity across longer installations; exact threshold and timing margins require the manufacturer data sheet.
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Embedded Serial Communication
The MAX3483CPA+ provides a compact interface between a low-voltage microcontroller UART and an RS-485 or RS-422 physical bus. With one transmitter and one receiver, it supports half-duplex communication where the software controls the direction of the bus. The 3.3V supply is convenient for embedded systems, but the design must account for driver enable timing, bus turnaround, termination, and ESD protection. Those timing and protection details are not included in the supplied verified snippets.
推薦
Process Monitoring
MAX3483CPA+ can connect process-monitoring equipment to a distributed measurement network when low power and differential signaling are important. The 250kbps data rate supports routine supervisory and sensor-data traffic, while slew-rate limiting helps reduce EMI from cable transitions. The device should be placed according to the bus topology, with protection and grounding selected for the installation environment. The supplied data does not confirm industrial or automotive qualification, so compliance and environmental claims must be checked separately.
推薦
Instrument Communication Interface
The MAX3483CPA+ is appropriate for laboratory and test-instrument interfaces that use a wired RS-485 or RS-422 control link. Its 3.3V operation can reduce interface complexity in modern instruments, and the half-duplex topology can reduce the number of signal conductors. Designers should verify receiver sensitivity, common-mode range, driver output levels, and propagation delay from the complete data sheet because those values are not present in the supplied search snippets.
推薦
推薦產品摘要
工程參考資料，適用於 MAX3483CPA+ — 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 | MAX3483ECPA+ | MAX3483ECPA | MAX3483CPA | SP3483EP-L | MAX3485EPA |
|---|---|---|---|---|---|---|
| Package | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Exar | Analog Devices |
主要差異化特點
- Specified 3.3V operating class (對比SP3483EP-L)
- True differential RS-485/RS-422 signaling (對比MAX3483ECPA+)
- Commercial through-hole integration (對比MAX3485EPA)
設計說明
Do not select a replacement solely because it is labeled RS-485. Verify the physical package, pin-by-pin mapping, supply range, receiver thresholds, driver enable behavior, data rate, temperature range, and ESD capability. The supplied evidence establishes an 8-pin PDIP and half-duplex 1/1 transceiver for MAX3483CPA+, but it does not reproduce the complete pin map or all electrical limits.
Place the transceiver close to the bus connector and provide a short, controlled return path. Keep sensitive logic away from the connector side of the board, use a ground reference appropriate to the installation, and route differential conductors with consistent geometry where practical. Add only the protection and filtering required by the actual cable environment; unverified component values should not be treated as datasheet requirements.
Use the manufacturer guidance for cable termination and topology. The MAX3483 family's slew-rate limiting is intended to reduce EMI and reflections, but it does not eliminate the need for correct bus geometry or termination. Check the selected resistor network against cable length, node count, baud rate, and whether the transceiver is at an endpoint before validating signal integrity with measurements.
The MAX3483CPA+ uses a through-hole 8-pin PDIP package, so thermal performance depends on board mounting, copper area, airflow, and the actual bus load. The supplied data does not provide power dissipation, junction-temperature, or package thermal-resistance values, so a thermal estimate cannot be responsibly calculated here. Check those values in the manufacturer datasheet and the final operating load.
合規資訊
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred.