SP232AEP-L - 16-Pin RS-232 Transceiver | MaxLinear
料号： SP232AEP-L ✗ 停产SP232AEP-L 概述
An RS-232 transceiver is an interface IC that converts logic-level UART signals into RS-232 levels and converts received RS-232 signals back into CMOS-compatible logic. Within the broader hierarchy of semiconductor interfaces, this device is a transceiver, an RS-232 interface IC, a line-driver/receiver pair, and a power-management-compatible peripheral for legacy serial ports. It is commonly associated with industrial equipment, computer peripherals, instrumentation, and embedded control systems that retain a DB9 or equivalent RS-232 connection.
The SP232A family provides a 120 kbit/s data rate under load, as stated in the retrieved SP232A documentation. MaxLinear's product-page description also presents an 80 kbit/s under-load rate for the family, so the two retrieved sources differ and both values are retained here rather than silently choosing one. The difference may reflect device-family wording, test conditions, or source revision differences. The verified product materials also identify small 0.1 µF ceramic charge-pump capacitors as a characteristic of the SP232A implementation.
The device uses MaxLinear's BiCMOS design, combining bipolar and CMOS process characteristics to support the line-driver and receiver functions required by RS-232. Its single-supply operation simplifies system power design compared with traditional ±12 V RS-232 interfaces. Nevertheless, the charge-pump network still creates the bipolar voltage levels required to drive an RS-232 receiver threshold, and correct capacitor selection and layout remain essential.
Typical uses include connecting a UART-equipped controller to an industrial serial peripheral, upgrading a legacy PC serial port, communicating with test equipment, and building multi-channel RS-232 links. The 16-pin PDIP format is appropriate for through-hole industrial boards and prototypes, although it occupies more board area than surface-mount RS-232 transceivers.
Designers should place the charge-pump capacitors close to their associated pins, route RS-232 driver outputs away from sensitive receiver inputs, and provide suitable protection for exposed external cables. The -40 °C to +85 °C temperature range is specifically listed in the Mouser product result, making the device suitable for extended commercial and industrial environments when the complete system qualification supports that range.
This page consolidates the verified distributor and manufacturer information, identifies the documented protocol, package, speed, temperature, and charge-pump characteristics, and separates confirmed drop-in candidates from replacement options that require further engineering verification.
直接替换替代料： SP232AEP-L ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
SP232AEP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX232EPE+
✅ 直接替换📋 参考替代料（不在目录中）
MAX232AEPE+
✅ 直接替换📋 参考替代料（不在目录中）
SP232AEP-L 规格参数
| Product Type | RS-232 line-driver and receiver transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Transceiver Configuration | 2/2 full RS-232 |
| 电源电压 | 5 V |
| Supported Protocol | RS-232 and V.28 |
| Maximum Data Rate Under Load | 120 kbit/s |
| Alternative Manufacturer-Page Data Rate | 80 kbit/s under load |
| Charge-Pump Capacitor Value | 0.1 µF ceramic |
| 工作温度范围 | -40 °C to +85 °C |
| 封装 | 16-pin PDIP |
| 安装类型 | Through-hole |
| Process Technology | BiCMOS |
| ESD Rating | 2 kV |
| Industrial Pinout Compatibility | Pin-to-pin compatible with popular industry-standard pinouts |
SP232AEP-L 16-pin pdip 引脚配置指南
SP232AEP-L（16-pin pdip 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： SP232AEP-L.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP232AEP-L 适用于 6 应用s: Legacy PC Serial Port Interface, Industrial Controller Serial Link, Test and Measurement Equipment, Embedded UART to RS-232 Bridge, Networking and Service Equipment, Medical and Diagnostic Equipment.
Legacy PC Serial Port Interface
The SP232AEP-L is appropriate for adding a logic-level UART connection to a legacy RS-232 port because it combines two drivers and two receivers with documented standard-pinout compatibility. The 16-pin PDIP format is easy to inspect, replace, and prototype on through-hole boards. A design should use the 5 V supply specified in the retrieved documentation, route each RS-232 line through the appropriate protection network, and confirm the DB9 signal assignment at the connector rather than inferring it solely from the transceiver family.
推荐
Industrial Controller Serial Link
The SP232AEP-L suits industrial controller designs requiring two RS-232 channels, a 5 V interface supply, and operation across the documented -40 °C to +85 °C range. Its 2/2 organization allows one port to handle control and status traffic or two independent links. For industrial deployment, engineers should verify isolation requirements, connector grounding, surge protection, and the complete system's environmental qualification, since the transceiver rating alone does not specify an isolated industrial interface.
推荐
Test and Measurement Equipment
The SP232AEP-L can provide a compact logic-level-to-RS-232 bridge in test instruments, bench controllers, and legacy automated test equipment. Its two transmitters and two receivers support multi-channel command, response, and trigger wiring, while the charge-pump implementation uses small 0.1 µF ceramic capacitors as described in the retrieved documentation. Measurement designers should keep sensitive analog and reference circuitry away from the charge-pump area and verify ground continuity between the interface and the instrument chassis.
推荐
Embedded UART to RS-232 Bridge
The SP232AEP-L is a practical choice between a microcontroller UART and an RS-232 peripheral because it performs level translation in both directions within one 16-pin PDIP. The verified 120 kbit/s under-load datasheet description supports ordinary control-port traffic, although the separate 80 kbit/s manufacturer-page figure makes 80 kbit/s the safer conservative limit until conditions are confirmed. Firmware should use a baud rate below the verified operating limit and include communication timeouts for robust industrial use.
推荐
Networking and Service Equipment
The SP232AEP-L can support service-console and configuration interfaces on networking equipment that retains an RS-232 management port. Two channels make it possible to expose separate command and diagnostic connections without using two separate interface packages. The through-hole PDIP construction suits serviceable or legacy equipment, but new compact products may prefer a smaller surface-mount equivalent after verifying exact pin and capacitor compatibility. A production design should also assess whether USB-to-RS-232 conversion would better satisfy modern security and enclosure constraints.
推荐
Medical and Diagnostic Equipment
The SP232AEP-L can provide a wired service or configuration interface in medical and diagnostic equipment where an RS-232 port remains part of the installed system. Its 2/2 channel arrangement and documented -40 °C to +85 °C range provide useful flexibility, but the component is not itself a medical-grade interface. Compliance must be assessed at the finished-equipment level, including electrical isolation, leakage current, ESD protection, risk management, and validation of every external cable-connected port.
推荐
推荐产品汇总
工程参考数据： SP232AEP-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 | SP232AEP | MAX232EPE+ | MAX232AEPE+ |
|---|---|---|---|---|
| Package | 16-pin PDIP | 16-pin PDIP - same | 16-pin PDIP - same | 16-pin PDIP - same |
| Brand | MaxLinear, Inc. | MaxLinear, Inc. | Analog Devices | Analog Devices |
关键差异点
- Documented 120 kbit/s under-load data rate （对比 MAX232EPE+)
- BiCMOS implementation documented by the manufacturer （对比 MAX232AEPE+)
- Two transmitters and two receivers in one 16-pin PDIP （对比 MAX232EPE+)
- Extended 85 °C maximum operating temperature （对比 MAX232AEPE+)
设计说明
Place the two 0.1 µF ceramic charge-pump capacitors directly across their specified pins and keep each loop as small as practical. Route the charge-pump connections away from UART receiver traces, analog inputs, crystal circuits, and sensitive reference nodes. The supplied manufacturer and datasheet-search results confirm the 0.1 µF ceramic requirement but do not expose a complete layout drawing, so the current MaxLinear datasheet should control placement.
Do not treat every MAX232-family designation as a drop-in substitute. The retrieved comparison results identify MAX232EPE+ and MAX232AEPE+ as candidates, but suffix differences can alter electrical ratings, temperature range, or ordering. Verify the 16-pin PDIP footprint, capacitor connection and value, supply limits, driver slew behavior, receiver thresholds, and ESD rating against both datasheets before approving a substitution.
Keep RS-232 driver outputs away from receiver and logic traces because the cable-side transition edges can couple into nearby circuits. Use a continuous ground reference, avoid long parallel runs between noisy outputs and sensitive inputs, and terminate or bias unused receiver inputs exactly as directed by the manufacturer. External connectors should receive suitable surge and ESD protection beyond the device's documented 2 kV ESD rating.
Provide a stable 5 V supply and decouple the transceiver close to its supply pins. The retrieved SP232A information identifies a single-supply 5 V implementation and 0.1 µF ceramic charge-pump capacitors; it does not provide a verified bulk-capacitor recommendation in the supplied text. Use the manufacturer datasheet for the final capacitor network, and verify supply ripple and ground bounce before using the device in precision measurement equipment.
合规信息
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because this is a general-purpose RS-232 interface IC rather than an automotive-qualified device in the provided evidence.