MAX3380EEUP+ - 2/2 RS-232 Transceiver | Analog Devices
料号： MAX3380EEUP+ ✓ 量产中MAX3380EEUP+ 概述
An RS-232 transceiver is an interface IC that converts between single-ended logic-level signals and differential bipolar RS-232 signals. It belongs to the transceiver class, then to the broader interface IC and semiconductor hierarchy. This bidirectional interface is useful when equipment must communicate over longer cable distances, tolerate ground-offset differences, or meet the electrical characteristics associated with EIA/TIA-232 and V.28 communications.
The MAX3380EEUP+ uses a low-dropout transmitter output stage and a dual charge pump. These features allow RS-232-compatible output levels from supplies below +3.1 V and down to +2.35 V without increasing supply current when the supply lies within that range. Its +5.5 V maximum operating voltage also makes it suitable for systems powered from a single lithium-ion cell or a low-voltage regulated rail.
The four-driver, four-receiver naming in some listings refers to two transmit channels and two receive channels rather than four independent full-duplex ports. Both RS-232 I/O pins and logic-side pins receive enhanced electrostatic-discharge protection. Typical system-level uses include data acquisition equipment, industrial controllers, service interfaces, embedded serial ports, and instrumentation that requires a compact, low-voltage RS-232 connection.
For board design, treat the transmitter outputs and receiver inputs as externally exposed communication pins even when the logic-side pins are protected. Keep the interface connector and cable path away from sensitive analog circuitry, provide the required bypass capacitance close to the supply pins, and route the differential transmission traces as a pair. The transmitter should connect to the remote RS-232 port through protection and signal-conditioning components appropriate to the required surge and ESD levels.
MAX3380EEUP+ is appropriate when a board needs two RS-232 receive channels and two RS-232 transmit channels from a compact, low-power interface IC. Verify cable length, data rate, connector protection, and grounding before deployment. This page combines the product specifications, qualified package details, sourcing information, replacement guidance, and practical RS-232 design considerations into a focused engineering reference.
直接替换替代料： MAX3380EEUP+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MAX3380EEUP+T
✅ 直接替换联系询价
查看数据手册 →MAX3380ECUP-T
✅ 直接替换📋 参考替代料（不在目录中）
MAX3380EEUP-T
✅ 直接替换📋 参考替代料（不在目录中）
MAX3381EEUP+
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →MAX3380EEUP+ 规格参数
| Device Type | RS-232 transceiver |
| Number of Transmitters | 2 |
| Number of Receivers | 2 |
| Supply Voltage Range | +2.35 V to +5.5 V |
| Maximum Data Rate | 460 kbps |
| RS-232 ESD Protection | 15 kV |
| Logic Pin ESD Protection | 15 kV |
| Interface Standard | EIA/TIA-232 |
| Communication Standard | V.28/V.24 |
| Transmitter Architecture | Low-dropout output stage |
| Charge-Pump Architecture | Dual charge pump |
| Transmitter Output Levels | RS-232-compatible levels from +2.35 V to +5.5 V supply |
| 封装 | 20-pin TSSOP |
| 安装类型 | Surface mount |
MAX3380EEUP+ 20-pin tssop 引脚配置指南
MAX3380EEUP+（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： MAX3380EEUP+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3380EEUP+ 适用于 6 应用s: Industrial Serial Control Interface, Data Acquisition Equipment, Embedded Service Console, Instrumentation and Test Equipment, Battery-Powered Portable Equipment, Security and Access-Control Equipment.
Industrial Serial Control Interface
The MAX3380EEUP+ fits industrial equipment that requires two RS-232 channels for configuration, diagnostics, or service communications. Its two transmitters and two receivers support simultaneous or independently assigned serial links while the +2.35 V to +5.5 V operating range supports low-voltage industrial controllers. Operation up to 460 kbps provides useful throughput for short diagnostic protocols and legacy equipment. The 15 kV ESD protection on the RS-232 and logic pins adds robustness at exposed interfaces, although external connector protection remains appropriate where surge threats exceed the device ratings.
推荐
Data Acquisition Equipment
Data acquisition systems can use the MAX3380EEUP+ to bridge modern logic-level equipment and legacy RS-232 instruments. One receiver channel can monitor a device response while another receives a status or trigger signal, and the transmitter channels can support command and data paths. Its low-voltage operation is useful in compact instruments powered from a regulated rail, while the 460 kbps capability accommodates many laboratory and industrial protocols. Keep the cable interface physically separated from sensitive measurement circuitry and validate grounding at the system level.
推荐
Embedded Service Console
The MAX3380EEUP+ is suitable for an embedded service or maintenance console that must communicate with a host computer or field-service tool over RS-232. Two receiver channels can accept separate service commands and equipment status, while two transmitter channels can provide command responses and diagnostic data. The +2.35 V minimum supply supports compact portable and embedded systems, and the 20-pin TSSOP preserves board area. Designers should add the appropriate connector, series impedance, and chassis-ground strategy for the expected cable environment.
推荐
Instrumentation and Test Equipment
MAX3380EEUP+ can connect a modern controller to RS-232-compatible analyzers, meters, or programmable instruments. The two-channel receiver arrangement permits two instruments to report independently, and the two transmitters can carry commands to separate devices. Its low dropout operation enables RS-232 output from supplies near the lower end of the +2.35 V to +5.5 V range, while 460 kbps supports high-speed legacy serial links over practical cable lengths. Confirm the remote instrument's logic polarity, handshake method, and ground reference during system integration.
推荐
Battery-Powered Portable Equipment
The MAX3380EEUP+ supports portable and battery-powered equipment that needs an RS-232 service or data port without a +5 V-only interface. Its operating range begins at +2.35 V and extends to +5.5 V, which is compatible with suitably regulated lithium-ion power systems. The low-dropout transmitter stage and dual charge pump maintain RS-232-compatible output levels over the specified supply range. Protection planning must include the connector and cable because internal 15 kV ESD ratings do not eliminate the need for external surge suppression in severe environments.
推荐
Security and Access-Control Equipment
The MAX3380EEUP+ can support legacy access-control readers, controllers, or alarm panels that retain RS-232 service ports. Two transmit channels can address separate peripheral devices, and two receive channels can collect acknowledgment and status information. The low supply range supports compact controller boards, while the protected RS-232 and logic pins improve tolerance to electrostatic discharge during installation and maintenance. The communication link should still be isolated or protected according to the installation's cable length, grounding arrangement, and surge exposure.
推荐
推荐产品汇总
工程参考数据： MAX3380EEUP+ ——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 | MAX3380EEUP+T | MAX3380ECUP-T | MAX3380EEUP-T | MAX3381EEUP+ |
|---|---|---|---|---|---|
| Package | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Device Type | 2/2 RS-232 transceiver | 2/2 RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | 2/2 RS-232 transceiver |
| Number of Transmitters | 2 | 2 | 2 | 2 | 2 |
| Number of Receivers | 2 | 2 | 2 | 2 | 2 |
| Supply Voltage Range | +2.35 V to +5.5 V | +2.35 V to +5.5 V | +2.35 V to +5.5 V | +2.35 V to +5.5 V | +2.35 V to +5.5 V |
| Temperature-Grade Suffix | E | E | C | E | E |
关键差异点
- Very low minimum operating supply （对比 MAX3381EEUP+)
- ESD protection covers communication and logic pins （对比 MAX3380ECUP-T)
- Same-package alternatives can simplify PCB reuse （对比 MAX3380EEUP+T)
设计说明
Place the required bypass capacitors directly beside the MAX3380EEUP+ supply and ground pins. Keep the charge-pump and high-voltage transmitter-current return paths compact, and avoid routing sensitive analog signals beneath the IC or between the transmitter pins. The TSSOP footprint permits short connections, but its fine lead pitch still requires careful thermal relief and solder-mask design to avoid bridging during rework.
Do not treat a similar MAX3380E ordering suffix as automatically interchangeable. Before substituting MAX3380EEUP+T, MAX3380ECUP-T, or MAX3380EEUP-T, compare the manufacturer ordering table for temperature grade, ESD configuration, package, and shipment code. The C and E suffixes can represent different operating-temperature coverage, so a mechanically compatible part can still be electrically unsuitable for the target enclosure.
Route each RS-232 transmitter output as a short, continuous trace toward the connector and place any protection network close to the entry point. RS-232 receivers can respond to external cable noise even when logic-side devices are quiet. Use a defined chassis-to-logic grounding strategy, avoid long ground loops, and test the finished assembly with the longest intended cable because the transceiver alone does not determine system-level EMC performance.
Confirm that the maximum supply transient remains below +5.5 V, including startup overshoot and inductive coupling from adjacent converters. The low-dropout transmitter output stage supports operation from +2.35 V, but adequate headroom must also exist for the charge pump and internal circuitry. Decouple the supply locally and evaluate regulator stability with the actual cable, connector, and peripheral loading before production release.
合规信息
Compliance status beyond the identified interface standards was not established for the exact MAX3380EEUP+ ordering code. The device is a general-purpose RS-232 interface rather than an automotive-qualified component.