SP3232EHEY-L/TR - 460 kbps RS-232 Transceiver | MaxLinear
Артикул: SP3232EHEY-L/TR ✓ АктивенSP3232EHEY-L/TR Обзор
An RS-232 transceiver is a semiconductor interface device that bridges a digital logic system and a serial communications link using RS-232 voltage signaling. Each transceiver channel combines a line driver, which converts logic signals into RS-232 output levels, with a receiver, which converts incoming RS-232 signals into logic-compatible levels. In the broader hierarchy, the SP3232EHEY-L/TR belongs to the interface-controller class, specifically the RS-232 driver/receiver and transceiver family within integrated interface ICs.
The SP3232E series supports operation from a single 3.3 V supply while producing the positive and negative voltage levels required for conventional RS-232 communication. According to the MaxLinear manufacturer datasheet, its charge-pump supply requires only 0.1 µF capacitors in 3.3 V operation. The 2/2 driver and receiver arrangement provides two independent communications channels, while the 460 kbps maximum signaling rate supports common point-to-point serial links, embedded equipment, and legacy peripheral interfaces.
The enhanced protection is particularly valuable in industrial and instrumentation environments where cables can be longer and more exposed than in a protected desktop enclosure. The device is specified for true EIA/TIA-232-F operation from a supply as high as 5.5 V and can interoperate with RS-232 equipment powered from a source as low as 2.7 V. Its internal charge-pump architecture reduces the number of external bulk capacitors while preserving bipolar RS-232 output levels.
Typical applications include data acquisition equipment, industrial controllers, portable test instruments, point-of-sale terminals, and embedded systems that retain an RS-232 service or communications port. The device can also pair with a host UART or microcontroller to provide a standards-compliant physical interface for legacy equipment. Designers should treat the cable, ground reference, connector, and logic levels as parts of the complete communication path rather than relying only on the IC specification.
A key design consideration is ensuring that the host-side interface levels match the selected UART and that unused driver or receiver channels are handled according to the manufacturer pin descriptions. Power-supply decoupling, charge-pump capacitor placement, and signal routing should follow the recommended layout in the manufacturer datasheet. ESD protection helps manage cable transients, but it does not replace proper grounding, shielding, or external surge protection in severe industrial environments.
This product page combines the exact electrical ratings, package information, pin-location guidance, verified drop-in candidates, and practical interface-layout considerations for SP3232EHEY-L/TR. It also distinguishes genuine same-footprint replacements from functionally similar devices that use different packages, allowing engineers to evaluate compatibility before modifying an existing RS-232 design.
Аналоги без доработки для SP3232EHEY-L/TR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с SP3232EHEY-L/TR (тот же форм-фактор и посадочное место) — отличается по Maximum Data Rate, Package, Mounting Type, Number of Drivers, Number of Receivers.
SP3232EEY-L/TR
✅ Прямая заменаУточнить цену
Открыть даташит →SP3232ECY-L/TR
✅ Прямая заменаУточнить цену
Открыть даташит →SP3232EEN-L/TR
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →SP3232EHEY-L/TR Характеристики
| Number of Drivers | 2 drivers |
| Number of Receivers | 2 receivers |
| Transceiver Configuration | 2/2 full RS-232 transceiver |
| Supply Voltage Range | 3 V to 5.5 V |
| Nominal 3.3 V Operation | 3.3 V |
| Maximum Data Rate | 460 kbps |
| Protocol | RS-232 |
| Standards Compatibility | True EIA/TIA-232-F operation |
| Minimum Interoperable RS-232 Source | 2.7 V |
| Charge-Pump Capacitor Requirement | 0.1 µF in 3.3 V operation |
| ESD Protection | ±15 kV human-body-model ESD protection |
| Корпус | 16-TSSOP |
| Package Width | 0.173 mm |
| Package Body Length | 4.40 mm |
| Тип монтажа | Surface mount |
| Packaging | Tube |
Руководство по цоколевке SP3232EHEY-L/TR в корпусе 4.40 mm
Цоколевка для SP3232EHEY-L/TR (корпус 4.40 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для SP3232EHEY-L/TR.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
SP3232EHEY-L/TR подходит для 6 применениеs: Embedded RS-232 Service Port, Industrial Data-Acquisition Equipment, Portable Test and Measurement Instruments, Point-of-Sale Terminal Interface, Legacy Controller Connectivity, Instrumentation and Control Cabinets.
Embedded RS-232 Service Port
The SP3232EHEY-L/TR fits an embedded service console because it combines two RS-232 channels with a 3.3 V-compatible single supply and a 460 kbps data-rate capability. A host UART connects to the logic-side inputs and outputs, while the driver channels provide the bipolar RS-232 levels required by legacy equipment. Its 16-TSSOP package limits board area, while ±15 kV human-body-model ESD protection improves robustness against charged cable transients. Place the 0.1 µF charge-pump capacitors close to their pins and route both RS-232 channels away from sensitive clock and sensing traces.
Рекомендуется
Industrial Data-Acquisition Equipment
The SP3232EHEY-L/TR is suitable for two-channel industrial data acquisition when the equipment must communicate with legacy RS-232 sensors, controllers, or laboratory instruments. Its 3 V to 5.5 V supply range allows operation from a 3.3 V system rail, and the integrated charge pump generates the required positive and negative signaling levels without a separate bipolar supply. The 460 kbps rating supports moderate-speed command and measurement traffic, while enhanced ±15 kV ESD protection adds margin for exposed cables. Verify the device temperature grade and add external surge protection when the interface leaves a controlled enclosure.
Рекомендуется
Portable Test and Measurement Instruments
The SP3232EHEY-L/TR works well in portable test instruments that need to download results or accept commands through a legacy RS-232 link. Its small 16-TSSOP footprint preserves board area for signal conditioning and display circuitry, and the 3 V minimum supply supports compact low-voltage systems. Two drivers and two receivers permit more than one RS-232 function when both directions and channels are required. The 460 kbps maximum rate is suitable for many instrument-control protocols, while the low-capacitance charge-pump implementation simplifies external component placement. Confirm cable length and ground-return requirements for reliable operation.
Рекомендуется
Point-of-Sale Terminal Interface
The SP3232EHEY-L/TR can support a point-of-sale terminal that retains a serial connection to a printer, scanner, or service computer. The 2/2 driver-receiver arrangement provides two RS-232 channels in one 16-TSSOP device, reducing the footprint compared with separate single-channel transceivers. Operation from 3.3 V suits compact embedded terminals, and the charge-pump circuit needs only 0.1 µF capacitors in 3.3 V operation. The enhanced ESD rating helps protect the interface from human contact during installation or service, although the system must still maintain a common signal ground and correctly shielded connectors.
Рекомендуется
Legacy Controller Connectivity
The SP3232EHEY-L/TR provides a practical bridge between a modern controller and legacy RS-232 equipment. One channel can carry commands while another carries status or diagnostic information, taking advantage of the integrated two-driver, two-receiver arrangement. Its 460 kbps rating exceeds the needs of many control and monitoring protocols, while the 3 V to 5.5 V supply range allows common embedded and legacy host rails. Use the manufacturer pin descriptions to connect the host-side UART and charge-pump components, and validate the logic polarity and timing against both the controller firmware and the connected peripheral.
Рекомендуется
Instrumentation and Control Cabinets
The SP3232EHEY-L/TR is appropriate for instrumentation and control cabinets where short RS-232 links connect diagnostic equipment to a local controller. Two full-duplex channels support separate command and data paths, while the 3.3 V operation reduces the power and capacitor burden in compact control electronics. Its ±15 kV human-body-model ESD rating adds useful protection against charged cable contact, but long cable runs still require grounding and, where required, dedicated surge suppression. Validate the operating-temperature grade against the cabinet temperature and observe the recommended charge-pump and bypass-capacitor layout for stable operation.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для SP3232EHEY-L/TR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SP3232EEY-L/TR | SP3232ECY-L/TR | SP3232EEN-L/TR |
|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear |
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Transceiver Type | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Maximum Data Rate | 460 kbps | 460 kbps | 460 kbps | 460 kbps |
| Protocol | RS-232 | RS-232 | RS-232 | RS-232 |
| Charge-Pump Capacitor | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation |
| RS-232 Standard Compatibility | True EIA/TIA-232-F operation | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver |
Ключевые отличия
- Two full RS-232 channels in a compact surface-mount package (против SP232EET-L/TR)
- Documented enhanced human-body-model ESD protection (против SP3232EEY-L/TR)
- Low-capacitance 3.3 V charge-pump implementation (против SP3232ECY-L/TR)
Заметки по проектированию
Place the SP3232E charge-pump capacitors and supply bypass capacitor directly beside their associated pins, with short ground returns and minimal loop area. Follow the SP3222E/SP3232E manufacturer layout rather than reproducing a generic RS-232 arrangement. Keep the 0.1 µF charge-pump capacitors in 3.3 V operation close to the IC because long traces add inductance that can disturb charge transfer and produce unstable positive or negative rail levels.
Do not treat RS-232 as a logic-level UART connection. The SP3232EHEY-L/TR driver outputs use bipolar RS-232 levels, while the receiver inputs accept bipolar RS-232 signals, so the host UART connects only to the logic-side pins. Verify signal polarity, driver and receiver channel mapping, and the enable behavior for each exact suffix before updating a PCB or substituting a related SP3232E part.
Route each RS-232 driver output as a dedicated pair with its receiver return path when practical, and keep the cable interface away from clocks, ADC inputs, and sensitive analog nodes. The ±15 kV human-body-model ESD rating improves transient tolerance, but it is not a surge-protection rating. Use chassis grounding, shielding, and appropriately rated external protection for cables exposed to severe industrial transients.
Decouple the SP3232EHEY-L/TR supply at the IC with the capacitance specified by the manufacturer datasheet and provide a low-impedance return between the charge-pump capacitors and ground. Although the interface operates from 3 V to 5.5 V, the host UART voltage must remain compatible with the SP3232E logic inputs and outputs. Confirm startup, supply sequencing, and logic levels before enabling the attached transmitter.
Информация о соответствии
The manufacturer datasheet documents true EIA/TIA-232-F operation and ±15 kV human-body-model ESD protection meeting IEC ESD requirements. No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was identified for this exact ordering code.
