MAX3490EPA+ - 10Mbps RS-485/RS-422 Transceiver | Analog Devices
料号： MAX3490EPA+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.35 | $3.35 |
| 10 | $3.35 | $33.50 |
| 100 | $3.35 | $335.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $3.35 | $3,350.00 |
MAX3490EPA+ 概述
An RS-485/RS-422 transceiver is an interface IC that converts digital logic-level signals into differential bus signals and converts received differential signals back into CMOS-compatible data. These differential links are used in industrial automation, instrumentation, building controls, and data communications because they are more resistant to common-mode noise than single-ended interfaces. The MAX3490EPA+ belongs to the transceiver class within interface ICs and supports point-to-point or multipoint differential communication architectures.
The principal verified features include one driver and one receiver, full duplex operation, a 3V to 3.6V supply range, and operation up to 10Mbps. The MAX3490EPA+ is identified as a true RS-485/RS-422 transceiver, while the slew-rate-limited driver helps control edge rates and reduce unwanted reflections and EMI. The verified distributor listing also identifies the package as 8-pin PDIP and lists the device as a 1/1 transceiver.
The device is suited to interfaces where low-voltage digital control communicates with a field bus over a cable. Its 10Mbps capability can support high-speed data transfer, industrial control links, and equipment-to-equipment communication. The driver’s short-circuit current limiting and thermal shutdown protection help protect the output stage when a bus fault or improper termination creates excessive output stress. Applications must still observe the manufacturer’s absolute maximum ratings and recommended external-circuit requirements.
For PCB implementation, use the 8-pin PDIP footprint and route the differential bus with controlled impedance when cable length, data rate, or EMI requirements justify it. Keep transceiver supply bypassing close to VCC and GND, connect the receiver and driver interface pins according to the datasheet, and select termination appropriate to the cable topology. The verified operating temperature range is -40°C to 85°C, making the part suitable for industrial temperature environments when the surrounding system requirements are met.
This page consolidates verified manufacturer and distributor information, pricing references, interface selection guidance, and practical design notes for engineers evaluating the MAX3490EPA+. It does not infer unverified electrical parameters; unavailable values are explicitly marked for follow-up against the manufacturer datasheet.
直接替换替代料： MAX3490EPA+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX3490EPA+ （相同外形与封装尺寸） ——差异在于 Driver Protection, Mounting Type, Package, Product Type, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
MAX3490CPA+
✅ 直接替换✓ 有现货
$6.9901 / 个
查看数据手册 →MAX3490EPA
✅ 直接替换📋 参考替代料（不在目录中）
MAX3490EPA+ 规格参数
| Product Type | RS-485/RS-422 full-duplex transceiver |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Supply Voltage Range | 3 V to 3.6 V |
| 数据速率 | 10 Mbps |
| Supported Protocols | RS-485 and RS-422 |
| Duplex Mode | Full duplex |
| Driver Type | Slew-rate-limited driver |
| Driver Protection | Short-circuit current limiting and thermal shutdown protection |
| 工作温度范围 | -40 °C to +85 °C |
| 封装 | 8-pin PDIP |
| 安装类型 | Through hole |
MAX3490EPA+ 8-pin pdip 引脚配置指南
MAX3490EPA+（8-pin pdip 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： MAX3490EPA+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3490EPA+ 适用于 6 应用s: Industrial Automation Bus Interface, Building and HVAC Control Networks, Instrumentation and Sensor Hub, Data Acquisition Equipment, Communication Port Isolation and Protection, Embedded Control Module.
Industrial Automation Bus Interface
The MAX3490EPA+ fits industrial automation links that need a low-power differential transceiver for communicating between a controller and remote equipment. Its verified 3V-to-3.6V supply range suits 3.3V digital systems, while the 10Mbps rating provides margin for high-speed control traffic. The one-driver/one-receiver arrangement supports a full-duplex bus architecture when the wiring and termination are designed according to the datasheet. Slew-rate limiting can help reduce edge-rate-induced EMI, although cable length, topology, grounding, and protection still determine real-world reliability.
推荐
Building and HVAC Control Networks
MAX3490EPA+ is suitable for controller nodes in building-control and HVAC equipment where a compact transceiver converts low-voltage digital signals to and from an RS-485 or RS-422 differential link. The 3.3V supply matches many embedded controllers, and the verified 10Mbps capability allows communication rates above common low-speed field-bus rates. Its slew-rate-limited driver helps manage signal transitions, but installers still need correct polarity, common-mode compatibility, cable termination, and surge protection for building wiring environments.
推荐
Instrumentation and Sensor Hub
The MAX3490EPA+ can connect an embedded instrument or sensor hub to a longer-distance differential communications segment. One transmitter and one receiver provide a practical point-to-point full-duplex arrangement, while the 3V-to-3.6V operating range aligns with 3.3V logic. The 10Mbps rating is useful when the system combines sensor data, configuration commands, and status updates on one interface. Designers should verify receiver thresholds, common-mode limits, cable length, and input protection because those parameters were not included in the verified search data.
推荐
Data Acquisition Equipment
Use MAX3490EPA+ as the physical-layer interface between a data-acquisition controller and remote measurement equipment. The verified 1/1 full-duplex transceiver structure supports simultaneous command transmission and data reception when both sides implement compatible wiring. Its 10Mbps capability can accommodate burst-oriented transfer, while the 3.3V supply simplifies connection to modern embedded logic. In practice, cable characteristic impedance, termination, grounding, and isolation requirements must be evaluated for the acquisition installation.
推荐
Communication Port Isolation and Protection
MAX3490EPA+ can serve as the transceiver portion of a communication port when the board includes external protection and, where required, isolation. The verified driver short-circuit current limiting and thermal shutdown protection improve resilience to bus faults, but they are not substitutes for surge suppressors, resistors, fuses, or isolation devices. The 10Mbps interface should be routed as a controlled differential pair, with protection components selected to preserve signal integrity and to meet the required common-mode and surge limits.
推荐
Embedded Control Module
The MAX3490EPA+ is appropriate for an embedded control module that needs a compact 3.3V interface to a field bus. The PDIP package is straightforward for through-hole assembly and manual inspection, while the 3V-to-3.6V range supports common embedded rails. Its one-driver/one-receiver arrangement can connect a local processor or programmable controller to a differential network. Before release, validate logic thresholds, timing margins, startup behavior, bus biasing, and thermal performance against the complete MAX3490 datasheet.
推荐
推荐产品汇总
工程参考数据： MAX3490EPA+ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAX3490CPA+ | MAX3490EPA | MAX3490EESA |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | SOIC-8 |
| Interface | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 |
| Mounting Type | Through hole | Through hole | Through hole | SMD/SMT |
关键差异点
- 10Mbps differential communication capability （对比 MAX3490CPA+)
- Through-hole 8-pin PDIP implementation （对比 MAX3490EESA)
- Integrated driver fault protection （对比 MAX3490CPA+)
设计说明
Use the verified 8-pin PDIP footprint and follow the MAX3490 datasheet for exact pin names and numbering. Place the transceiver close to the connector or cable entry point so the differential pair is short and symmetric. Keep supply bypass components close to VCC and GND, and route the bus as a controlled differential pair when the operating data rate and cable require it.
At the verified maximum data rate of 10Mbps, cable loss, impedance discontinuities, reflections, and connector parasitics can materially affect reliability. Select termination according to the cable topology and transmitter/receiver arrangement documented by the manufacturer. Validate edge rates, common-mode behavior, and receiver thresholds with the complete system rather than relying only on nominal data-rate ratings.
Do not treat short-circuit limiting and thermal shutdown as complete bus protection. Add appropriately rated surge protection, fault current control, grounding, and any required isolation for externally accessible cables. Also avoid substituting a SOIC-8 part on a PDIP footprint without a PCB redesign; the verified comparison data identifies MAX3490EESA as SMD/SMT.
合规信息
The verified search results do not provide authoritative compliance declarations. Check the current Analog Devices product documentation and supplier declarations before production release.