MAX3386EEUP+ - 3V ESD-Protected RS-232 Transceiver | Analog Devices
MPN： MAX3386EEUP+ ✓ 啟用中MAX3386EEUP+ 概覽
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.
直接替換替代品，適用於 MAX3386EEUP+ — 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： MAX3386EEUP+ （相同外形與佔位） — 差異在於 ESD Protection, Product Type.
MAX3386EIPWR
✅ 直接替換📋 參考替代品（不在目錄中）
MAX3386ECUP+
✅ 直接替換聯絡詢價
查看資料表 →TRS3386EIPWRG4
✅ 直接替換📋 參考替代品（不在目錄中）
MAX3386EEUP+ 規格
| Product Type | RS-232 transceiver |
| 供應電壓 | 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 |
| 封裝 | 20-pin TSSOP |
| 安裝類型 | Surface mount |
MAX3386EEUP+ 20-pin tssop 腳位配置指南
MAX3386EEUP+（20-pin tssop 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： MAX3386EEUP+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX3386EEUP+ 適用於 6 應用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.
工程參考資料，適用於 MAX3386EEUP+ — 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 | 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 |
主要差異化特點
- Offers three transmitters and two receivers in one 20-pin TSSOP device (對比TRS3386EIPWRG4)
- Uses a nominal 3V supply for compact embedded systems (對比MAX3386EIPWR)
- Combines a 20-pin TSSOP footprint with enhanced ESD protection (對比MAX3386ECUP+)
設計說明
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.
合規資訊
Compliance status was not explicitly stated for this ordering variant. Review the current Analog Devices product documentation and material-declaration records before release.