SP3232EY-L - 2/2 RS-232 Transceiver | MaxLinear
料号： SP3232EY-L ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.273 | $0.27 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
SP3232EY-L 概述
An RS-232 transceiver is an interface IC that combines line drivers and receivers with the electrical characteristics required by RS-232 communication links. The driver converts low-voltage logic signals into RS-232-compatible levels, while the receiver converts incoming RS-232 signals back into logic levels. In the broader electronics hierarchy, the SP3232EY-L belongs to interface ICs, communication interfaces, and RS-232 transceivers.
The verified data identifies the SP3222E/SP3232E family as using a high-efficiency charge-pump power supply that requires only 0.1 μF capacitors in 3.3 V operation. It also specifies true +3.0 V to +5.5 V RS-232 operation, minimum 120 kbps data-rate capability under full load, and 1 μA low-power shutdown with receivers active. These features make the device relevant to portable computers, embedded serial links, instrumentation, and industrial control equipment.
The SP3232EY-L combines transmit and receive functions in one package, reducing the number of discrete interface ICs required for a dual-channel RS-232 port. Its 16-TSSOP package supports compact surface-mount layouts, while the specified 3.0 V to 5.5 V supply range allows operation from both 3.3 V and 5 V system rails. The device is appropriate where RS-232 compliance and low-voltage integration are more important than the higher data rates of newer serial standards.
Designers should pay attention to the external charge-pump capacitors, supply decoupling, and the distinction between logic-side and RS-232-side signals. The 0.1 μF capacitor requirement applies to 3.3 V operation according to the supplied family description; capacitor voltage rating and layout should follow the manufacturer guidance. Because the verified results do not provide a complete public pinout or detailed absolute-maximum table for this exact suffix, pin-level and stress-limit decisions require confirmation from the exact manufacturer datasheet before release to production.
This product page combines the supplied distributor and manufacturer-family data with application guidance, design cautions, and clearly marked information gaps. It is intended to support initial component selection and board planning rather than replace the exact datasheet, qualification process, or application-specific validation.
直接替换替代料： SP3232EY-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： SP3232EY-L （相同外形与封装尺寸） ——差异在于 Package, Product Type, Data Rate, ESD Protection, Low-Power Shutdown Current.
快速对比工具——选择替代料号进行并排对比：
SP3232EEY-L
✅ 直接替换📋 参考替代料（不在目录中）
SP3222EBEY-L/TR
✅ 直接替换✓ 有现货
$0.92 / 个
查看数据手册 →MAX3232CD
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.7831 / 个
查看数据手册 →MAX232CD
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX202CD
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.1781 / 个
查看数据手册 →SP3232EY-L 规格参数
| Product Type | RS-232 transceiver |
| Transmitter Configuration | 2 transmitters |
| Receiver Configuration | 2 receivers |
| 工作电源电压 | +3.0 V to +5.5 V |
| 数据速率 | 120 kbps minimum under full load |
| Low-Power Shutdown Current | 1 μA with receivers active |
| Charge-Pump Capacitor Requirement | 0.1 μF in 3.3 V operation |
| RS-232 Standard | True EIA/TIA-232-F operation |
| 封装 | 16-TSSOP |
| 安装类型 | Surface mount |
| Channel Count | 2/2 driver-receiver channels |
| 电源电流 | 1 mA |
| RoHS | unknown |
| REACH | unknown |
SP3232EY-L 16-tssop 引脚配置指南
SP3232EY-L（16-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： SP3232EY-L.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP3232EY-L 适用于 7 应用s: Portable RS-232 Equipment, Embedded Serial Port, Legacy Printer Interface, Industrial Control Communication, Test and Measurement Equipment, Serial Adapter and Dongle, Data Acquisition and Service Port.
Portable RS-232 Equipment
The SP3232EY-L fits portable and hand-held equipment because the supplied MaxLinear family description identifies a +3.0 V to +5.5 V operating range and a high-efficiency charge-pump supply requiring only 0.1 μF capacitors in 3.3 V operation. Its two transmitters and two receivers provide a compact multi-channel RS-232 interface without requiring separate driver and receiver packages. The device is useful when a modern low-voltage controller must connect to a legacy RS-232 peripheral, printer, service port, or configuration interface. Designers should place the charge-pump capacitors and supply bypass close to the device, while adding connector-side protection and grounding appropriate to the cable environment.
推荐
Embedded Serial Port
The SP3232EY-L is appropriate for an embedded control board that needs two RS-232 channels while operating from a 3.3 V or 5 V rail. The verified data specifies true EIA/TIA-232-F operation and at least 120 kbps data rate under full load, which is suitable for conventional serial-console, instrumentation, and legacy equipment links. Integrating both directions in a 16-TSSOP package simplifies routing compared with separate line-driver and receiver ICs. The system designer must still account for logic-level translation, cable length, grounding, ESD protection, and the external charge-pump capacitors specified for the chosen supply condition.
推荐
Legacy Printer Interface
The SP3232EY-L can support a legacy printer or peripheral interface when the host logic uses low-voltage digital signaling and the target device expects true RS-232 levels. Two transmit and two receive channels allow status and control signals to share the same physical interface, while the 120 kbps minimum data-rate specification provides ample margin for many printer and service-port protocols. The interface should include the required charge-pump capacitors and supply decoupling, and the board should provide robust connector protection because an external cable exposes the interface to ESD and surge events. Validate the logic polarity and handshake timing in the connected equipment.
推荐
Industrial Control Communication
The SP3232EY-L is suitable for industrial control and diagnostic equipment that retains an RS-232 management, programming, or service port. Its +3.0 V to +5.5 V supply range permits integration with both 3.3 V and 5 V control electronics, and the compact 16-TSSOP package supports space-constrained boards. The verified 120 kbps minimum data rate is appropriate for many configuration and supervisory protocols. For industrial deployment, engineers should add connector-side ESD protection, define a suitable common ground strategy, and verify the exact operating-temperature and isolation requirements against the current manufacturer datasheet before qualification.
推荐
Test and Measurement Equipment
The SP3232EY-L can provide a legacy RS-232 control port on test and measurement instruments that need to communicate with older computers, fixtures, or service software. The two-channel transceiver reduces the number of interface components needed when the instrument has both command and response signals. The verified 1 μA low-power shutdown with receivers active may help reduce consumption in portable test products, although the complete mode-current behavior must be checked in the exact datasheet. Place bypass and charge-pump capacitors close to the IC, provide controlled return paths, and add protection at any user-accessible connector.
推荐
Serial Adapter and Dongle
The SP3232EY-L is well suited to compact serial adapters and dongles that convert a low-voltage host interface to RS-232. Its 16-TSSOP package and two transmitters plus two receivers allow several control signals to be integrated in a small board, while the 3.0 V to 5.5 V range supports common embedded hosts. The charge-pump supply is particularly relevant to compact products because the supplied family description specifies only 0.1 μF capacitors in 3.3 V operation. A production design should still include ESD protection, a defined ground reference, tested cable compatibility, and a verified shutdown control strategy.
推荐
Data Acquisition and Service Port
The SP3232EY-L can support service and configuration ports on data-acquisition equipment, where a stable legacy RS-232 connection may coexist with modern low-voltage control logic. The verified 120 kbps minimum rate is suitable for many command, diagnostic, and firmware-service channels, while the two receive channels can support status feedback. The device should be placed close to its bypass and charge-pump capacitors, with careful separation from sensitive analog or high-speed circuitry. Check the exact suffix's pinout, absolute maximum ratings, and operating-temperature limits because those details are not present in the supplied search snippets.
推荐
推荐产品汇总
工程参考数据： SP3232EY-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 | SP3232EEY-L | SP3222E | MAX3232CD | MAX232CD |
|---|---|---|---|---|---|
| Product Type | 2/2 RS-232 transceiver | 2/2 RS-232 transceiver | RS-232 transceiver family member | RS-232 transceiver | RS-232 transceiver |
| Brand | MaxLinear | MaxLinear | MaxLinear | Maxim Integrated | Maxim Integrated |
关键差异点
- Integrated two-channel RS-232 interface （对比 MAX3232CD)
- Low-voltage charge-pump integration （对比 MAX232CD)
- Documented minimum data rate （对比 SP3222E)
- Low-power receiver-active shutdown （对比 MAX202ID)
设计说明
Place the charge-pump capacitors and supply bypass components directly beside the SP3232EY-L pins, following the exact capacitor connections and loop geometry in the current MaxLinear datasheet. The supplied family description confirms 0.1 μF capacitors for 3.3 V operation. Keep the high-current charge-pump paths compact and route them away from sensitive analog inputs, clock lines, and communication grounds where practical. Confirm capacitor voltage ratings and package footprints before layout release.
Design the RS-232 connector path with controlled return continuity, adequate ground reference, and connector-side ESD protection. RS-232 is a single-ended interface, so cable routing and grounding can materially affect noise immunity. Use the two transmitter and two receiver channels for their intended signal directions, and validate the assembled board with the target cable length, baud rate, and connected equipment rather than relying only on logic-level simulation.
Do not treat SP3232EY-L, SP3232EEY-L, and generic RS-232 transceiver names as automatically interchangeable. The verified search results show related listings, but they do not provide a complete exact-suffix pin table or ordering cross-reference. Confirm package suffix, pin names, charge-pump capacitor values, supply limits, and temperature range in the current manufacturer datasheet. Treat any cross-family substitution as a design review item, not a drop-in assumption.
合规信息
The supplied search results do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for the exact SP3232EY-L ordering code. AEC-Q100 is not applicable to this general-purpose interface IC based on the supplied data, but no automotive qualification claim should be inferred.
