SP3232EP-L - 3.0V RS-232 Transceiver | Sipex
料号： SP3232EP-L ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.1174 | $0.12 |
| 10 | $0.273 | $2.73 |
| 100 | $0.273 | $27.30 |
| 500 | $0.273 | $136.50 |
| 1,000 | $0.273 | $273.00 |
SP3232EP-L 概述
What is an RS-232 transceiver? An RS-232 transceiver is an interface IC that combines a driver and receiver for point-to-point serial communication. In the wider hierarchy, it is a transceiver, then an interface IC, then an integrated circuit and semiconductor. The driver converts logic-level signals into RS-232 levels, while the receiver converts incoming RS-232 levels back into digital logic levels. This device is intended for systems that need standards-based serial connectivity at low supply voltage.
Key features include the 3.0V minimum operating supply, 5.5V maximum supply, 120 kbps minimum data rate under full load, and ±15 kV enhanced ESD protection. The verified snippets also identify true EIA/TIA-232-F compliance from a +3.0V to +5.5V supply and interoperability with RS-232 down to +2.7V. These characteristics make the transceiver suitable for embedded systems, industrial control links, test equipment, and peripheral connections where a standard RS-232 interface is required.
The SP3232EP uses a +3.0V-to-+5.5V supply architecture to support low-voltage digital systems without requiring a higher-voltage RS-232 transceiver supply. The 120 kbps minimum rate under full load provides a defined data-rate target for moderate-speed serial links. Its ESD rating is particularly important because RS-232 connector inputs can be exposed to external cables and user-contact transients.
Typical applications include USB-to-RS-232 adapters, embedded instrumentation, point-of-sale equipment, industrial controllers, data-acquisition systems, and legacy peripheral connections. In each case, the transceiver provides the physical-layer interface between logic-level UART hardware and an external RS-232 port. The application must still observe the datasheet's electrical limits, pin connections, decoupling requirements, and cable-routing guidance.
For PCB design, place the transceiver close to the RS-232 connector and provide the required local supply bypassing. Keep the logic-side traces away from the connector-side signals, use an appropriate ground reference, and verify the external UART voltage levels. The 16-pin SSOP footprint requires careful solder-paste and land-pattern review before manufacturing.
This page combines verified manufacturer and distributor information, pricing context, package identification, and application-focused engineering guidance. Because the supplied web results do not provide a complete pin-by-pin pinout or verified same-package substitute list, missing engineering data is explicitly marked rather than inferred. Confirm final placement and production quantities against the manufacturer datasheet and current distributor inventory.
直接替换替代料： SP3232EP-L ——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： SP3232EP-L （相同外形与封装尺寸） ——差异在于 Package, Product Type, Supply Voltage Range, ESD Protection, Maximum Data Rate.
快速对比工具——选择替代料号进行并排对比：
MAX3232CD
✅ 直接替换✓ 有现货
$0.7831 / 个
查看数据手册 →MAX202CD
✅ 直接替换✓ 有现货
$1.1781 / 个
查看数据手册 →MAX211CDB
✅ 直接替换✓ 有现货
$3.2251 / 个
查看数据手册 →MAX213CAI+
✅ 直接替换📋 参考替代料（不在目录中）
SP3232EP-L 规格参数
| Product Type | RS-232 transceiver |
| Supply Voltage Range | +3.0 V to +5.5 V |
| Minimum Data Rate Under Full Load | 120 kbps |
| RS-232 Interoperability | Down to +2.7 V power source |
| Enhanced ESD Protection | ±15 kV |
| Compliance | True EIA/TIA-232-F standards from +3.0V to +5.5V power supply |
| Low-Power Shutdown | 1 µA with receivers active (SP3222) |
| 封装 | 16-pin SSOP |
| 安装类型 | Surface mount |
| 引脚数 | 16 |
SP3232EP-L 16-pin ssop 引脚配置指南
SP3232EP-L（16-pin ssop 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： SP3232EP-L.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP3232EP-L 适用于 6 应用s: USB-to-RS-232 Adapter, Embedded Instrumentation, Industrial Controller Link, Point-of-Sale Terminal, Data-Acquisition System, Legacy Peripheral Connection.
USB-to-RS-232 Adapter
SP3232EP-L fits the connector-side RS-232 interface in a USB-to-serial adapter when the USB-UART bridge uses compatible logic levels and the adapter operates from a +3.0 V to +5.5 V supply. Its 120 kbps minimum data rate under full load is appropriate for many low-to-moderate-speed UART links, while ±15 kV enhanced ESD protection helps at the externally accessible connector. The complete design still needs verified pin assignments, bypass capacitors, signal grounding, and cable-specific validation.
推荐
Embedded Instrumentation
The SP3232EP-L is appropriate for an embedded instrument that exposes a standard RS-232 service or measurement port. The +3.0 V to +5.5 V supply range can simplify interface design around modern 3.3 V embedded controllers, while the 120 kbps full-load data-rate specification supports common UART command streams. Use the transceiver at the physical layer, keep logic and connector-side routing separated, and verify the instrument’s cable length and grounding requirements before release.
推荐
Industrial Controller Link
SP3232EP-L can provide the RS-232 physical layer for an industrial controller communicating with a legacy peripheral. Its true EIA/TIA-232-F operation from a +3.0 V to +5.5 V supply and enhanced ±15 kV ESD rating are useful for exposed serial interfaces, but industrial suitability also depends on temperature, isolation, surge protection, and enclosure grounding. Those qualification details are not present in the supplied results and must be checked against the manufacturer datasheet before deployment.
推荐
Point-of-Sale Terminal
A point-of-sale terminal with a legacy RS-232 printer or peripheral port can use SP3232EP-L as the line-driver and receiver. The 120 kbps minimum rate under full load is generally aligned with transaction-oriented serial peripherals, and the ±15 kV enhanced ESD specification adds protection where an external cable is connected. Confirm the peripheral’s logic polarity, connector DTE/DCE orientation, cable length, and supply sequencing before selecting the final footprint and pin configuration.
推荐
Data-Acquisition System
SP3232EP-L can connect a data-acquisition controller to an RS-232 instrument when the acquisition system uses a +3.0 V to +5.5 V logic rail and needs a defined 120 kbps full-load rate. The transceiver helps isolate the UART controller from the physical RS-232 signal levels, while the enhanced ESD rating is valuable for laboratory and field cables. In practice, add suitable protection, maintain a defined ground reference, and verify that the instrument does not require isolated RS-232 communication.
推荐
Legacy Peripheral Connection
The SP3232EP-L is useful for modern controller boards that must retain a legacy RS-232 peripheral connection. Its low-voltage supply range supports compact mixed-voltage designs, and the transceiver combines transmit and receive functions in one 16-pin SSOP package. Compatibility is not guaranteed by package name alone: verify every pin function, driver and receiver polarity, electrical thresholds, supply current, and RS-232 standard requirements before placing the alternative on an existing PCB.
推荐
推荐产品汇总
工程参考数据： SP3232EP-L ——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 | MAX3232CD | MAX202CD | MAX211CDB | MAX213CAI+ | SN75176BD |
|---|---|---|---|---|---|---|
| Package | 16-pin SSOP | 16-pin SOIC; exact footprint compatibility unverified | 16-pin SOIC; exact footprint compatibility unverified | 16-pin SOIC; exact footprint compatibility unverified | 16-pin SOIC; exact footprint compatibility unverified | 16-pin SOIC; exact footprint compatibility unverified |
| Brand | Sipex | Maxim Integrated | Maxim Integrated | Maxim Integrated | Analog Devices | Texas Instruments |
关键差异点
- Low-voltage RS-232 operation （对比 MAX3232CD)
- Defined full-load data-rate capability （对比 MAX202CD)
- Enhanced ESD specification （对比 MAX211CDB)
- Low-voltage interoperability statement （对比 MAX213CAI+)
设计说明
Use the verified +3.0 V to +5.5 V operating range as the design boundary. Place the transceiver’s required supply-decoupling network close to the device pins and verify the capacitor value, voltage rating, and ESR requirements in the manufacturer datasheet. Do not assume that interoperability down to +2.7 V means the SP3232EP-L is specified for operation below +3.0 V. The exact quiescent and active current must also be checked because it was not supplied.
Route the RS-232 connector-side nets as a separate signal group from UART logic-side nets. Keep the transceiver close to the connector when practical, maintain a continuous ground reference, and minimize stubs and unprotected long traces. The external cable is an ESD entry point, so place connector protection and chassis or signal-ground arrangements consistently with the system’s isolation strategy. The supplied data does not include a complete pinout, so confirm every net against the official datasheet before layout.
Do not substitute a part merely because it is labeled RS-232. Verify the exact package, pin numbering, driver and receiver enable pins, supply voltage, output levels, input thresholds, data rate, and shutdown behavior. The alternatives listed here are candidates selected from available site and cross-reference information, not manufacturer-confirmed equivalents. For production, use an approved BOM source and compare the official SP3232EP-L datasheet with the candidate datasheet before releasing the PCB.
The verified 120 kbps-under-full-load specification is a minimum data-rate capability under a stated condition, not a complete system guarantee. Validate UART rise and fall times, cable capacitance, line loading, grounding, and connector wiring at the target baud rate. If the cable is long or exposed to industrial transients, assess additional protection and isolation rather than relying only on the IC’s ±15 kV enhanced ESD specification.
The supplied data does not provide the SP3232EP-L operating temperature, thermal resistance, or package power rating. Do not estimate production thermal reliability from the package name alone. Use the manufacturer’s maximum ratings and application guidance, confirm ambient temperature and airflow, and check exposed connector and copper effects during thermal validation. These missing values are marked as data-needed rather than inferred.
合规信息
The supplied verified results identify true EIA/TIA-232-F operation and do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. Compliance status remains unknown rather than inferred.
