SP3232EUCN-L/TR - 1 Mbps 3.3V RS-232 | MaxLinear
料号： SP3232EUCN-L/TR ✓ 量产中SP3232EUCN-L/TR 概述
An RS-232 transceiver is an interface IC that converts logic-level UART signals into RS-232 voltage levels and converts received RS-232 signals back into logic-compatible levels. Within the interface hierarchy, it is a serial transceiver, a line-driver and line-receiver component, and ultimately a semiconductor designed for data communication and industrial-control equipment.
The SP3232E has two transmit channels and two receive channels, allowing two serial links or bidirectional operation on one device. Its 1000 kbps signaling rate supports relatively high-speed RS-232 communication compared with slower legacy transceivers. Operation from a single 3.3 V supply also simplifies power design in portable systems, while the charge-pump topology generates the bipolar voltage required by RS-232 without a separate negative supply.
MaxLinear describes the SP3232E series as a solution for portable or hand-held computers, including notebook and palmtop platforms. The same architecture is useful for instrument control, point-of-sale equipment, industrial serial adapters, and embedded systems that exchange data with a host over RS-232.
The charge-pump network requires small 0.1 µF capacitors for 3.3 V operation. Place these capacitors close to their associated pins and keep the RS-232 driver and receiver traces away from sensitive analog or high-speed digital paths. Confirm the exact pin names and exposed functions against the MaxLinear datasheet before assigning PCB nets.
This product page combines the SP3232E family electrical characteristics, package information, drop-in replacement guidance, comparison data, and practical PCB design notes to support faster component selection and implementation.
直接替换替代料： SP3232EUCN-L/TR ——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： SP3232EUCN-L/TR （相同外形与封装尺寸） ——差异在于 Package, Maximum Data Rate, Operating Temperature, Mounting Type, Operating Supply Voltage.
SP3232EEY-L/TR
✅ 直接替换联系询价
查看数据手册 →SP3232EEN-L/TR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SP3232ECY-L/TR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SP3232ECA-L/TR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SP3232EUCN-L/TR 规格参数
| Product Type | RS-232 transceiver IC |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Interface Standard | RS-232 |
| Maximum Data Rate | 1000 kbps |
| Supply Voltage at 3.3 V Operation | 3.3 V |
| Power-Supply Architecture | Single supply with integrated charge pump |
| Charge-Pump Capacitor Requirement | 0.1 µF in 3.3 V operation |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Commercial Operating Temperature Range | 0 °C to 70 °C |
| AEC-Q100 Qualification | not_applicable |
SP3232EUCN-L/TR 16-pin soic 引脚配置指南
SP3232EUCN-L/TR（16-pin soic 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： SP3232EUCN-L/TR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP3232EUCN-L/TR 适用于 6 应用s: Portable Computer Serial Interface, Industrial Serial Adapter, Point-of-Sale Terminal, Test and Measurement Equipment, Embedded Controller Communication, Data Acquisition and Control Module.
Portable Computer Serial Interface
The SP3232EUCN-L/TR fits a portable computer or data-acquisition accessory that requires an RS-232 port from a 3.3 V system. Its two drivers and two receivers support two serial channels, while the 1000 kbps capability accommodates faster UART links than many legacy transceivers. The integrated charge pump avoids a separate negative supply and needs only 0.1 µF capacitors in the documented 3.3 V configuration. Place the charge-pump capacitors near the IC and route the cable-side traces away from sensitive processor and memory signals.
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Industrial Serial Adapter
The SP3232EUCN-L/TR is suitable for a compact industrial adapter that converts a 3.3 V UART into RS-232. Two driver and two receiver channels allow connection to more than one downstream serial device, and the 1000 kbps maximum rate supports higher-throughput command and telemetry links. The single-supply charge-pump architecture reduces external power complexity, while its 16-pin SOIC package simplifies assembly. Confirm grounding, cable shielding, and ESD requirements at the enclosure and connector interface.
推荐
Point-of-Sale Terminal
The SP3232EUCN-L/TR can provide the physical RS-232 layer in a point-of-sale terminal or peripheral controller powered from 3.3 V. Two receive channels can accommodate two peripheral links, while two driver channels provide outbound command or data paths. Its 1000 kbps rate exceeds typical legacy peripheral baud rates and gives the design additional timing margin. Use the exact UART baud rate, parity, and cable length as part of the system timing budget, and verify signal polarity against the selected connector wiring.
推荐
Test and Measurement Equipment
The SP3232EUCN-L/TR is appropriate for a compact instrument that exposes an RS-232 control or service port. The 1000 kbps signaling rate supports fast command exchange, and the dual-channel arrangement can simplify sharing between instrument subsystems. Its 3.3 V operation and low-capacitance charge-pump requirement help preserve board area in portable test equipment. Separate the RS-232 cable interface from sensitive analog measurement circuits, and validate ground-offset behavior in the final equipment configuration.
推荐
Embedded Controller Communication
The SP3232EUCN-L/TR allows an embedded controller with a 3.3 V UART to communicate with an RS-232 modem, reader, or service unit. The 2-driver, 2-receiver arrangement supports simultaneous signal paths and multidrop-style cable wiring where the system design permits it. A maximum rate of 1000 kbps allows a higher baud-rate link than common 230 kbps RS-232 transceivers. Match the UART settings and logic levels to the transceiver specification, and use the manufacturer pin-description table to assign every package terminal.
推荐
Data Acquisition and Control Module
The SP3232EUCN-L/TR is suitable for a data-acquisition module that accepts commands or returns records through RS-232. The 1000 kbps maximum rate can shorten transfer time for larger data packets, while the 3.3 V supply and 16-pin SOIC package support compact controller boards. Two driver and receiver channels offer flexibility for separate control and monitoring paths. For long cables or noisy industrial environments, validate signal integrity with the actual cable, baud rate, and grounding arrangement rather than relying only on nominal device ratings.
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推荐产品汇总
工程参考数据： SP3232EUCN-L/TR ——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 | SP3232EEY-L/TR | SP3232EEN-L/TR | SP3232ECY-L/TR | SP3232ECA-L/TR |
|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | MaxLinear, Inc. | MaxLinear, Inc. | MaxLinear, Inc. | MaxLinear, Inc. | MaxLinear, Inc. |
| Product Type | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver |
| Number of Drivers | 2 | 2 | 2 | 2 | 2 |
| Number of Receivers | 2 | 2 | 2 | 2 | 2 |
| Maximum Data Rate | 1000 kbps | 1000 kbps | 1000 kbps | 1000 kbps | 1000 kbps |
| 3.3 V Operation | Supported | Supported | Supported | Supported | Supported |
| Charge-Pump Capacitor | 0.1 µF | 0.1 µF | 0.1 µF | 0.1 µF | 0.1 µF |
| Special Features | Integrated charge pump with 2 drivers and 2 receivers | Same SP3232E family architecture | Same SP3232E family architecture | Same SP3232E family architecture | Same SP3232E family architecture |
关键差异点
- Higher nominal RS-232 speed than lower-rate alternatives （对比 ST3232ECDR)
- Single 3.3 V supply with integrated charge-pump support （对比 ST3232ECDR)
- Four communication channels in one interface IC （对比 SP232EET-L/TR)
设计说明
Place the documented 0.1 µF charge-pump capacitors directly beside the corresponding SP3232E pins and keep their ground returns short. The MaxLinear application circuit is the preferred starting point because capacitor placement affects the charge-pump loop and radiated noise. Avoid routing RS-232 driver outputs beneath sensitive analog or high-speed digital traces, and provide a solid ground reference between the transceiver and connector.
Separate the cable-side RS-232 nets from UART logic and internal power signals. Maintain a practical ground connection at the interface boundary, but follow the system grounding strategy so that cable surge currents do not flow through sensitive circuit ground paths. If the board includes both a transceiver and a connector, place the ESD-protection component close to the connector and the transceiver close to its supply and charge-pump components.
Do not assume that every SP3232E ordering suffix is an unconditional drop-in alternative. Verify the package body dimensions, lead pitch, pin assignment, temperature range, and exposed terminal treatment before releasing a PCB substitution. Also confirm the UART baud rate against the 1000 kbps transceiver limit, since protocol overhead and system latency reduce the usable application throughput.
合规信息
The manufacturer material identifies the SP3232E as a commercial portable-equipment interface product. RoHS, REACH, lead-free, halogen-free, and conflict-mineral status require confirmation from the current manufacturer product or material declaration.