MAX3386EEUP+ - 3V ESD-Protected RS-232 Transceiver | Analog Devices
料号： MAX3386EEUP+ ✓ 量产中MAX3386EEUP+ 概述
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232-compatible voltage levels and converts incoming RS-232 signals back into digital logic. Within the interface hierarchy, the MAX3386EEUP+ is a multi-driver, multi-receiver line-interface device designed for point-to-point serial links requiring electrostatic-discharge protection.
Key features include three RS-232 drivers, two RS-232 receivers, a nominal 3V supply, and enhanced ESD protection of ±25 kV. The device targets EIA/TIA-232 and V.28/V.24 communications while emphasizing low power requirements and high data-rate capability. Its 20-pin TSSOP package supports compact surface-mount PCB construction without requiring external driver circuitry for each unidirectional RS-232 link.
The MAX3386EEUP+ family provides a practical bridge between a modern microcontroller UART and a legacy RS-232 port. The three transmitters support multiple outputs, while two receivers can monitor two incoming signals or implement a hardware handshake arrangement. The ±25 kV ESD rating increases robustness at exposed connector interfaces, although board-level routing and grounding remain essential for dependable operation.
Typical applications include personal digital assistants, cellular phones, portable instrumentation, barcode readers, industrial controls, and service or diagnostic equipment. It is particularly useful where a compact PCB requires several RS-232 signals but the system power supply operates near 3V. The interface supports point-to-point links rather than multidrop RS-232 networks.
When designing the circuit, account for RS-232's unbalanced voltage signaling and use a suitable protection network at any externally accessible connector. Keep the transceiver and its charge-pump components away from sensitive analog areas, and follow the Analog Devices pin-description table when assigning connector and logic signals. Confirm the exact data rate, supply range, and operating temperature limits against the manufacturer datasheet before release.
This page combines the manufacturer's interface description, package information, drop-in candidates, application guidance, and design considerations to support faster component evaluation and sourcing decisions.
直接替换替代料： MAX3386EEUP+ ——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： MAX3386EEUP+ （相同外形与封装尺寸） ——差异在于 ESD Protection, Product Type.
MAX3386EIPWR
✅ 直接替换📋 参考替代料（不在目录中）
MAX3386ECUP+
✅ 直接替换联系询价
查看数据手册 →TRS3386EIPWRG4
✅ 直接替换📋 参考替代料（不在目录中）
MAX3386EEUP+ 规格参数
| Product Type | RS-232 transceiver |
| 电源电压 | 3 V |
| Number of Transmitters | 3 |
| Number of Receivers | 2 |
| ESD Protection | ±25 kV |
| Interface Standard | EIA/TIA-232 |
| Supported Protocol | V.28/V.24 |
| 封装 | 20-pin TSSOP |
| 安装类型 | Surface mount |
MAX3386EEUP+ 20-pin tssop 引脚配置指南
MAX3386EEUP+（20-pin tssop 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： MAX3386EEUP+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3386EEUP+ 适用于 6 应用s: Portable RS-232 Data Acquisition, Industrial Control and Diagnostics, Cellular and Handheld Equipment, Barcode and Point-of-Sale Terminals, Programmable Instrument Communication, Security and Access-Control Systems.
Portable RS-232 Data Acquisition
The MAX3386EEUP+ fits portable measurement equipment that uses a legacy RS-232 connection while the controller operates from a 3V rail. Its three transmitters can support multiple outbound commands, while two receivers can return status or acknowledgements. The 20-pin TSSOP package limits board area, and the nominal 3V operation aligns with compact embedded systems. The ±25 kV ESD protection adds value when users attach external cables, although the interface still requires careful grounding and connector-level protection.
Industrial Control and Diagnostics
The MAX3386EEUP+ is suitable for industrial controllers and service equipment that need an EIA/TIA-232 service port alongside a modern host processor. Three transmitters and two receivers provide flexibility for command, status, and handshake signals, while the 3V-powered design can simplify integration with low-voltage control logic. Its 20-pin TSSOP package supports compact assembly. Before deployment, confirm that the operating-temperature rating and ESD performance satisfy the industrial enclosure and connector requirements.
Cellular and Handheld Equipment
The MAX3386EEUP+ can provide RS-232 connectivity in cellular phones, personal digital assistants, and other handheld products that need a wired legacy interface. The manufacturer describes the MAX3386E family as a low-power, high-data-rate communications interface for portable equipment. Its three transmitters and two receivers allow a compact product to support more than one serial signal without three separate interface ICs. Board layout should keep the transceiver away from sensitive RF and high-gain analog sections.
Barcode and Point-of-Sale Terminals
The MAX3386EEUP+ can connect a barcode scanner, receipt printer, or legacy point-of-sale peripheral to a 3V embedded controller. The three-driver arrangement is useful when a terminal must transmit more than one control signal, while two receivers can handle separate device acknowledgements. The 20-pin TSSOP footprint reduces board consumption compared with multiple single-channel transceivers. Ensure the connector design uses proper RS-232 grounding and that each receiver is assigned to the correct handshake or data signal.
Programmable Instrument Communication
The MAX3386EEUP+ is appropriate for programmable instruments that expose an RS-232 command interface to a computer or service terminal. Its nominal 3V supply and 20-pin TSSOP package make it useful in compact instruments with limited board area, while the two receivers can support separate status or data paths. The interface can also coexist with a local UART controller because the transceiver handles RS-232 voltage conversion. Verify maximum data rate, logic thresholds, and temperature limits for the intended command throughput.
Security and Access-Control Systems
The MAX3386EEUP+ can support service diagnostics or controller connectivity in access-control and security equipment that retains an RS-232 interface. The ±25 kV ESD protection is useful around user-accessible connectors, and the three transmitters plus two receivers allow multiple command and status paths. A 3V supply matches many compact embedded controllers, while the TSSOP package limits board-space requirements. The enclosure design should still provide chassis grounding, controlled cable routing, and any required surge suppression.
工程参考数据： MAX3386EEUP+ ——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 | MAX3386EIPWR | MAX3386ECUP+ | TRS3386EIPWRG4 |
|---|---|---|---|---|
| Product Type | 3V RS-232 transceiver | 3V RS-232 transceiver | 3V RS-232 transceiver | RS-232 transceiver |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Package | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP |
关键差异点
- Offers three transmitters and two receivers in one 20-pin TSSOP device （对比 TRS3386EIPWRG4)
- Uses a nominal 3V supply for compact embedded systems （对比 MAX3386EIPWR)
- Combines a 20-pin TSSOP footprint with enhanced ESD protection （对比 MAX3386ECUP+)
设计说明
Route the MAX3386EEUP+ interface pins directly toward the connector or protected board boundary and place any approved protection components close to the entry point. Keep the transceiver away from sensitive analog and RF areas. Use the manufacturer pin-description table to identify every transmitter, receiver, supply, ground, and charge-pump connection before finalizing tracks.
RS-232 signals are differential in the connector interface but use unbalanced voltage levels relative to the transceiver ground. Keep the ground reference continuous and route driver outputs away from receiver inputs to reduce crosstalk. Avoid long parallel unprotected traces between the IC and connector, especially when three transmitters operate simultaneously.
Do not treat the ±25 kV ESD rating as permission to omit connector protection in uncontrolled environments. Confirm whether the rating applies to driver, receiver, or both sides and whether system-level standards require a dedicated surge-protection network. Also verify the exact supply range, data rate, temperature grade, and receiver thresholds before releasing the design.
合规信息
Compliance status was not explicitly stated for this ordering variant. Review the current Analog Devices product documentation and material-declaration records before release.