SP3232EBCA-L/TR - 2/2 3V RS-232 Transceiver | MaxLinear
料号： SP3232EBCA-L/TR ✓ 量产中SP3232EBCA-L/TR 概述
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 voltage levels and receives RS-232 signals for conversion back into logic-compatible levels. Within the interface hierarchy, the SP3232EB belongs to the RS-232 transceiver class of interface ICs and combines line drivers, line receivers, and charge-pump voltage conversion in one integrated device. This integration eliminates the need for a separate external RS-232 voltage source.
The SP3232EB series provides two transmit channels and two receive channels, allowing two logic-side signals to leave the system while two RS-232 inputs are received. Its supply range of +3.0 V to +5.5 V allows operation from both 3.3 V and 5 V system rails. The manufacturer identifies a 250 kbit/s transmission rate and 15 kV ESD protection as notable device characteristics for robust interface designs.
The charge-pump supply is a core technical feature of the SP3222EB and SP3232EB families. At 3.3 V operation, the manufacturer states that the high-efficiency charge pump requires only 0.1 µF capacitors. This arrangement creates positive and negative RS-232 levels from one positive supply, while reducing the external component count compared with implementations requiring separate charge-pump support components.
Typical applications include portable and handheld computers, data terminals, industrial equipment, point-of-sale systems, and embedded serial interfaces. In a portable design, the device can translate low-voltage logic to and from an RS-232 peripheral while operating from the same 3.3 V rail as the system controller. In industrial equipment, the 15 kV ESD protection rating and 250 kbit/s capability support robust communication links where electrical transients and moderate data rates are expected.
PCB design should preserve the manufacturer’s recommended charge-pump capacitor connections and keep those components close to the appropriate supply pins. Decoupling and signal-routing practices should also limit switching-current paths from disturbing sensitive logic circuitry. Because the RS-232 interface is single-ended and uses large voltage swings, the connector-side traces should remain short and be arranged to minimize coupling into adjacent signals.
This product page combines the verified device characteristics, package information, manufacturer cross-reference results, practical application guidance, and engineering-focused comparison data. It is intended to help engineers identify the correct transceiver, verify footprint and interface compatibility, and plan the charge-pump and layout requirements before releasing an RS-232 design.
直接替换替代料： SP3232EBCA-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： SP3232EBCA-L/TR （相同外形与封装尺寸） ——差异在于 Package, Maximum Data Rate, Product Type, Charge-Pump Capacitor Requirement, Operating Temperature Range.
SP3232ECY-L/TR
✅ 直接替换联系询价
查看数据手册 →SP3232ECN-L/TR
✅ 直接替换联系询价
查看数据手册 →SP3232EET-L/TR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SP3232EEA-L/TR
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →SP3232EHCY-L
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →MAX3232ECAE+
✅ 直接替换📋 参考替代料（不在目录中）
SP3232EBCA-L/TR 规格参数
| Device Type | RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Supply Voltage Range | +3.0 V to +5.5 V |
| Maximum Data Rate | 250 kbit/s |
| ESD Protection | 15 kV |
| Charge-Pump Capacitor Requirement at 3.3 V | 0.1 µF |
| Protocol | RS-232 |
| Standards Compliance | True EIA/TIA-232-F |
| 封装 | 16-SSOP (0.209, 5.30 mm Width) |
| Packaging | Tape and reel |
| 安装类型 | Surface mount |
| 引脚数 | 16 pins |
SP3232EBCA-L/TR 16-ssop (0.209, 5.30 mm width) 引脚配置指南
SP3232EBCA-L/TR（16-ssop (0.209, 5.30 mm width) 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： SP3232EBCA-L/TR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SP3232EBCA-L/TR 适用于 6 应用s: Portable Data Terminals, Industrial Control Systems, Point-of-Sale Terminals, Embedded Serial Gateways, Instrumentation and Test Equipment, Communication and Networking Equipment.
Portable Data Terminals
The SP3232EBCA-L/TR fits portable data terminals that need bidirectional RS-232 communication from a 3.3 V or 5 V system rail. Its 2/2 channel arrangement supports two outbound serial signals and two inbound signals, while the integrated charge pump generates the required bipolar RS-232 levels from one supply. At 3.3 V operation, the manufacturer states that the SP3222EB/SP3232EB family requires only 0.1 µF charge-pump capacitors. The 250 kbit/s rate suits conventional terminal links, and 15 kV ESD protection adds useful transient robustness for a cabled connector. Layout should keep the charge-pump network compact and place input protection close to the connector.
推荐
Industrial Control Systems
The SP3232EBCA-L/TR is suitable for industrial controllers that exchange command and status data with RS-232 equipment. Two drivers and two receivers allow the controller to support multiple legacy peripheral connections without requiring separate line-interface devices. Operation from +3.0 V to +5.5 V accommodates both 24 V industrial terminal electronics with suitable downstream regulation and legacy 5 V systems. Its 15 kV ESD protection is valuable at accessible cable interfaces, although it does not replace a surge-protection network. The 250 kbit/s limit is appropriate for parameter polling and supervisory communication. Keep connector-side traces short and evaluate isolated grounding where the connected equipment has a different earth reference.
推荐
Point-of-Sale Terminals
The SP3232EBCA-L/TR supports point-of-sale equipment that connects printers, scanners, readers, or service interfaces through RS-232. Its 2/2 transceiver configuration can place a host and peripheral on one logic-side interface while maintaining separate receive channels for status and control information. The single-supply charge-pump design reduces the external power-conversion requirement, which is valuable in compact countertop equipment operating from 3.3 V or 5 V. A 250 kbit/s link rate is sufficient for transaction traffic and configuration consoles. Designers should apply the manufacturer’s capacitor values, route driver outputs away from sensitive inputs, and consider additional surge protection for cables connected outside the enclosure.
推荐
Embedded Serial Gateways
The SP3232EBCA-L/TR is useful in embedded serial gateways that translate between a modern controller and an RS-232-equipped instrument. A single +3.0 V to +5.5 V supply range supports embedded Linux, microcontroller, and industrial-control rails, while the charge-pump output provides true RS-232 levels without a separate negative supply. The two-driver, two-receiver arrangement can support a command port and a diagnostic port. The 250 kbit/s maximum rate accommodates configuration protocols and legacy equipment but not high-bandwidth serial links. Place the transceiver near the connector, provide a continuous return path, and assess whether galvanic isolation is required when the remote instrument has an independent earth ground.
推荐
Instrumentation and Test Equipment
The SP3232EBCA-L/TR can provide the legacy RS-232 link used by programmable instruments, bench accessories, and service interfaces. A 2/2 arrangement allows command transmission and measurement-status reception on the same board, while the 3.3 V capability supports compact modern test instruments. The 250 kbit/s rate is suitable for command sequences, status text, and legacy diagnostic protocols. Its 15 kV ESD protection is useful where the interface is exposed to user-accessible cables, although proper system grounding remains essential. Use short connector-side routing, avoid placing the transceiver beneath high-current switching paths, and verify the exact pin mapping from the manufacturer datasheet before fabrication.
推荐
Communication and Networking Equipment
The SP3232EBCA-L/TR is appropriate for network equipment, adapters, and management interfaces that retain an RS-232 service port. The single +3.0 V to +5.5 V supply simplifies integration with 3.3 V and 5 V control logic, and the integrated charge pump eliminates a separate bipolar supply. Two transmitters and two receivers provide enough channels for console management or equipment-to-equipment diagnostics. The 250 kbit/s rate supports administrative traffic rather than Ethernet-speed transfers, so the device is best treated as an auxiliary management interface. Maintain a low-impedance signal ground, provide connector-side transient protection where required, and keep switching regulators and relay currents away from the RS-232 routing region.
推荐
推荐产品汇总
工程参考数据： SP3232EBCA-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 | SP3232ECY-L/TR | SP3232ECN-L/TR | SP3232EET-L/TR | SP3232EEA-L/TR | MAX3232ECAE+ |
|---|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear | Maxim Integrated |
| Package | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP |
| Device Type | 2/2 RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver |
| Compatibility Classification | Target device | Drop-in replacement, pin compatible | Functional equivalent, pin compatible | Same-family candidate; verify exact suffix | Same-family candidate; verify exact suffix | Cross-brand replacement candidate; verify package and pin mapping |
关键差异点
- Single-supply 3.3 V operation with integrated charge pump （对比 MAX3232ECAE+)
- Direct same-family drop-in path （对比 SP3232ECY-L/TR)
- Two-driver and two-receiver configuration （对比 MAX232ACPE+)
设计说明
Place the charge-pump capacitors close to the pins specified in the MaxLinear SP3232EB application circuit. The manufacturer states that the SP3222EB/SP3232EB series needs only 0.1 µF capacitors in 3.3 V operation. Keep capacitor connections short, use an appropriate DC voltage rating, and avoid routing sensitive logic traces beneath the charge-pump current loop to minimize switching-node coupling.
Keep the transceiver close to the RS-232 connector so that driver outputs and receiver inputs do not travel through long PCB traces. Maintain a continuous signal-ground return between the equipment and connected device, and keep the RS-232 routing away from switching regulators, relays, inductors, and high-speed clocks. If the cable leaves the enclosure, assess whether additional connector-side surge protection is required beyond the device’s 15 kV ESD protection.
Do not substitute a generic RS-232 transceiver solely because it has the same pin count. Verify the exact package suffix, footprint, supply range, driver and receiver count, shutdown behavior, temperature grade, ESD rating, and charge-pump capacitor values. The MAX3232EC family appears in the MaxLinear cross-reference material, but a cross-brand substitution still requires comparison of the exact ordering code and manufacturer pin table.
合规信息
The verified product and distributor excerpts do not state the compliance status of SP3232EBCA-L/TR. Consult the current MaxLinear product declaration or material declaration before environmental qualification.
