SP3232EBEN-L/TR - 250kbps RS-232 Transceiver | MaxLinear
料号： SP3232EBEN-L/TR ✓ 量产中SP3232EBEN-L/TR 概述
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 levels and converts received RS-232 levels back into digital logic signals. The SP3232EB family combines receiver and transmitter functions with an integrated charge-pump supply, making it suitable for portable and hand-held equipment that requires true RS-232 performance from a low-voltage system supply.
The SP3232EBEN-L/TR supports two transmit and two receive channels. Its single-supply operating range of 3.0V to 5.5V permits use in both 3.3V and 5V systems. The manufacturer states that its high-efficiency charge-pump power supply requires only 0.1µF capacitors during 3.3V operation, reducing the external support-component count for compact serial-interface designs.
The family is specified for operation at up to 250kbps and has a quiescent supply current of 0.3mA. The low-power architecture is useful for battery-powered equipment, portable test instruments, and embedded systems where an RS-232 connection is required but continuous current consumption must remain controlled. The 16-SOIC package supports standard surface-mount production and PCB rework procedures.
Typical applications include serial service ports on portable computers, industrial diagnostic equipment, point-of-sale systems, data-acquisition instruments, and embedded controllers that communicate with RS-232 peripherals. The two-channel configuration allows one port to connect to a host adapter while another handles a local serial accessory or test fixture.
Designers should preserve the required charge-pump capacitor connections and place the associated capacitors close to the device. Input and output signal paths should be routed away from switching nodes and noisy digital return currents to reduce the possibility of communications errors in electrically noisy industrial equipment.
This product page combines the manufacturer family specifications with package details, practical application guidance, and a focused drop-in replacement comparison. It is intended to help engineers select an RS-232 interface, plan a PCB layout, and evaluate compatible replacements without reducing the component to a generic transceiver description.
直接替换替代料： SP3232EBEN-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： SP3232EBEN-L/TR （相同外形与封装尺寸） ——差异在于 Mounting Type, Package, Maximum Data Rate, Operating Supply Voltage, Operating Temperature.
SP3232EBCA-L/TR
✅ 直接替换📋 参考替代料（不在目录中）
SP3232EEN-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 →MAX3232CAE+
✅ 直接替换联系询价
查看数据手册 →SP3232EBEN-L/TR 规格参数
| Product Type | RS-232 transceiver interface IC |
| Transmitter Channels | 2 channels |
| Receiver Channels | 2 channels |
| Supply Voltage Range | 3.0V to 5.5V |
| Maximum Data Rate | 250kbps |
| Quiescent Supply Current | 0.3mA |
| 工作温度范围 | -40°C to +85°C |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Charge-Pump Capacitor Requirement | 0.1µF at 3.3V operation |
| Power Supply Architecture | Single supply |
| RS-232 Standards Support | Full RS-232 |
SP3232EBEN-L/TR 16-pin soic 引脚配置指南
SP3232EBEN-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： SP3232EBEN-L/TR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP3232EBEN-L/TR 适用于 6 应用s: Portable Computer Service Port, Industrial Diagnostic Console, Point-of-Sale Terminal, Battery-Powered Field Instrument, Data Acquisition Controller, Embedded Serial Adapter.
Portable Computer Service Port
The MaxLinear SP3232EBEN-L/TR fits legacy RS-232 service connections in portable and hand-held computers because it provides two transmitters, two receivers, and true RS-232 operation from a single 3.0V to 5.5V supply. Its charge-pump implementation requires only 0.1µF capacitors at 3.3V, helping preserve board area in compact equipment. The 250kbps rate is sufficient for many service and configuration ports. Place the charge-pump capacitors directly at their designated pins and route the serial traces away from switching circuitry to reduce data errors.
推荐
Industrial Diagnostic Console
The SP3232EBEN-L/TR is appropriate for industrial diagnostic consoles that exchange RS-232 commands and status data with controllers, test fixtures, or service equipment. Two transmit and two receive channels provide flexibility for linking a host adapter with a local peripheral, while the 250kbps rate supports typical diagnostic traffic. Its single 3.0V-to-5.5V supply reduces power-conversion complexity, and the 0.3mA quiescent current is beneficial in unattended equipment. Maintain a continuous ground reference between connected systems and separate transceiver routing from motors and relay contacts.
推荐
Point-of-Sale Terminal
The SP3232EBEN-L/TR can provide the legacy RS-232 connection used by point-of-sale terminals, receipt printers, scales, or customer displays. Its 250kbps maximum data rate is more than sufficient for the short command and transaction packets commonly used in these systems, while two transmitters and two receivers can support multiple wired accessories. Operating from a single 3.3V or 5V rail simplifies integration with embedded checkout controllers. Use the manufacturer charge-pump layout and keep the RS-232 traces away from switching power stages to prevent communication glitches.
推荐
Battery-Powered Field Instrument
The SP3232EBEN-L/TR supports field instruments that communicate through a legacy RS-232 port while operating from a constrained battery-powered supply. The device accepts 3.0V to 5.5V, has a listed quiescent current of 0.3mA, and uses a charge-pump supply requiring only 0.1µF capacitors in 3.3V operation. These characteristics help control component count and standby consumption. For handheld equipment, follow the manufacturer capacitor-placement guidance, provide a stable common ground between systems, and verify that the selected external capacitors have suitable voltage and temperature ratings.
推荐
Data Acquisition Controller
The SP3232EBEN-L/TR is suitable for a data-acquisition controller that uses RS-232 to configure a measurement instrument or transfer stored records to a host computer. The 250kbps rate supports moderate-volume serial control and data transfer, while the dual transmit and receive configuration can simplify multi-device cabling. A single 3.0V-to-5.5V supply allows the interface to share common embedded-system rails. Use shielded or appropriately routed cabling where required, avoid long unprotected branches, and keep transceiver traces isolated from high-current sensor and actuator return paths.
推荐
Embedded Serial Adapter
The MaxLinear SP3232EBEN-L/TR fits compact embedded serial adapters that convert a processor UART into a full RS-232 connection. It supports 250kbps operation, two transmit channels, and two receive channels from a single 3.0V-to-5.5V supply. The 16-SOIC package is compatible with conventional surface-mount assembly, and the 0.1µF 3.3V charge-pump capacitors support a compact implementation. Match UART logic levels to the device interface, include the required bypass and charge-pump capacitance, and provide an unobstructed return path between connected RS-232 equipment.
推荐
推荐产品汇总
工程参考数据： SP3232EBEN-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 | SP3232EBCA-L/TR | SP3232EEN-L/TR | SP3232ECA-L/TR | MAX3232CAE+ |
|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | Maxim Integrated |
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Product Type | 2/2 full RS-232 transceiver | SP3232EB RS-232 transceiver | SP3232 RS-232 transceiver | SP3232 RS-232 transceiver | RS-232 transceiver |
| Maximum Data Rate | 250kbps | 250kbps | 250kbps | 250kbps | 120kbps |
| Surface-Mount Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC |
关键差异点
- Higher documented maximum data rate than the cited MAX3232 alternative （对比 MAX3232CAE+)
- Single-supply operation across common embedded rails （对比 MAX3232CAE+)
- Compact charge-pump support for portable designs （对比 SP3232EBCA-L/TR)
- Same-manufacturer family option for pin-compatible PCB reuse （对比 SP3232EEN-L/TR)
设计说明
Place the 0.1µF charge-pump capacitors at the pins identified in the manufacturer application circuit and minimize loop area between each capacitor and the SP3232EBEN-L/TR. For 3.3V operation, use the capacitance value specified by MaxLinear rather than substituting a generic value without checking the operating and temperature requirements. Keep the charge-pump node away from sensitive receiver inputs and follow the recommended ground-plane connection.
Route RS-232 and charge-pump paths away from switching regulators, relays, high-current inductors, and fast digital clocks. Maintain a continuous return path between the transceiver and the connected equipment; a split or interrupted ground can increase common-mode voltage and cause intermittent communication errors. Match the external data-rate requirements to the 250kbps device limit and avoid long unterminated branches where reflected signals could affect reception.
Do not treat the 16-SOIC package as permission to interchange every SP3232 ordering code without checking its functional options. Confirm the numbered pins, supply limits, charge-pump connections, shutdown behavior, and capacitor values against the exact manufacturer datasheet. When substituting MAX3232CAE+, verify that the lower cited data rate still satisfies the link and review any differences in enable, shutdown, or supply-current requirements.
The SP3232EBEN-L/TR accepts a single supply from 3.0V to 5.5V, which simplifies low-voltage equipment design. Place the recommended bypass capacitance close to the supply pins and verify that the upstream regulator can support both the IC load and the charge-pump current. Although the listed quiescent supply current is 0.3mA, total system demand can rise during transmission and depends on the connected RS-232 load.
合规信息
The manufacturer product page and listed distributor information do not explicitly state the requested compliance statuses. The device is an industrial and portable RS-232 interface IC rather than an automotive-qualified product.