SP3232EEA-L - 120kbps RS-232 Transceiver | MaxLinear
Артикул: SP3232EEA-L ✓ АктивенSP3232EEA-L Обзор
An RS-232 transceiver is an interface IC that converts a low-voltage logic-level signal into RS-232 voltage levels and receives RS-232 signals back into logic-level outputs. In the electronic-component hierarchy, it belongs to the interface IC family and provides physical-layer communication between a host controller and an external data link. Its integrated charge pump eliminates the need for a separate external RS-232 voltage source.
Key features include true EIA/TIA-232-F operation, 120 kbps minimum signaling under full load, 1 mA supply current, and shutdown-related current as low as 1 µA. The charge-pump implementation requires only 0.1 µF capacitors when operated at 3.3 V. Enhanced ESD protection reaches ±15 kV under IEC 61000-4-2 and ±15 kV under the Human Body Model, helping protect ports used in exposed or industrial environments.
The SP3232EEA-L combines two transmit channels with two receive channels in one 16-SSOP device. This channel density suits compact point-to-point links, equipment consoles, industrial controllers, and service interfaces. Its 3 V to 5.5 V operating range allows use with both 3.3 V and 5 V system rails, while the -40°C to +85°C range supports designs deployed beyond room temperature.
Typical applications include handheld equipment, notebook and peripheral adapters, industrial control panels, instrumentation, and embedded systems that exchange data through a legacy RS-232 port. The device is especially useful where a modern low-voltage controller must communicate with existing RS-232 equipment without adding a separate negative-voltage supply and discrete level-shifting circuitry.
PCB design should place the charge-pump capacitors close to their associated pins and route the RS-232 traces away from sensitive clocks and analog signals. External protection may still be required for long cables or severe industrial transients. Verify the exact SP3232EEA-L pin functions against the manufacturer datasheet before layout because the verified distributor excerpts do not publish a complete pin table.
This page combines verified distributor specifications, manufacturer documentation, strict same-package replacement analysis, and practical design guidance to support faster component selection and implementation of the SP3232EEA-L RS-232 interface.
Аналоги без доработки для SP3232EEA-L — 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 SP3232EEA-L (тот же форм-фактор и посадочное место) — отличается по Data Rate.
SP3232EBEA-L/TR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SP3232EUEY-L
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SP3232EA-L
✅ Прямая заменаУточнить цену
Открыть даташит →MAX3232CAE+
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SP3238ECY-L
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SP3232EEA-L Характеристики
| Product Type | RS-232 transceiver IC |
| Transceiver Configuration | 2 transmitters and 2 receivers |
| Скорость передачи данных | 120 kbps minimum under full load |
| Рабочее напряжение питания | 3 V to 5.5 V |
| Typical Supply Current | 1 mA |
| Ток выключения | 1 µA |
| Charge-Pump Capacitor Requirement | 0.1 µF at 3.3 V |
| Диапазон рабочих температур | -40°C to +85°C |
| Корпус | 16-pin SSOP |
| Тип монтажа | Surface mount |
| Interface Standard | True EIA/TIA-232-F operation |
| IEC 61000-4-2 ESD Protection | ±15 kV |
| Human Body Model ESD Protection | ±15 kV |
| Charge-Pump Supply | Integrated on-chip charge pump |
| Power-Supply Topology | Single-supply RS-232 interface |
Руководство по цоколевке SP3232EEA-L в корпусе 16-pin ssop
Цоколевка для SP3232EEA-L (корпус 16-pin ssop). 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 SP3232EEA-L.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
SP3232EEA-L подходит для 6 применениеs: Handheld Equipment Serial Port, Industrial Control Panel Interface, Instrumentation and Test Equipment, Legacy Equipment Adapter, Portable Diagnostic Equipment, Embedded System Debug Interface.
Handheld Equipment Serial Port
The SP3232EEA-L fits handheld and portable equipment that must expose a true RS-232 connection from a 3.3 V or 5 V controller. Its integrated charge pump generates the required RS-232 voltage without an external negative supply, and the 120 kbps minimum full-load data rate is appropriate for conventional serial control or data links. At 3.3 V, the manufacturer specifies 0.1 µF charge-pump capacitors, helping reduce board area. The two-transmitter, two-receiver arrangement can support one bidirectional channel or two point-to-point links. Designers should place the charge-pump capacitors directly beside their pins and reserve ESD protection for connectors that may be exposed to user-accessible cables.
Рекомендуется
Industrial Control Panel Interface
The SP3232EEA-L is appropriate for industrial control panels and service controllers that need to communicate with legacy RS-232 equipment over a long-lived installed interface. Its specified -40°C to +85°C operating range supports temperature variation beyond commercial room-temperature conditions, while ±15 kV IEC 61000-4-2 and HBM ESD ratings improve tolerance of connector transients. The 3 V to 5.5 V supply range allows connection to embedded 3.3 V processors or 5 V control hardware. Because industrial cables can present severe surges and ground-potential differences, external protection, isolation, or surge suppression may still be required beyond the IC's specified ESD capability.
Рекомендуется
Instrumentation and Test Equipment
The SP3232EEA-L can serve as the communications interface in portable instrumentation and test equipment that must exchange commands or measurement data with a host computer. Two transmitters and two receivers consolidate multiple RS-232 functions into one 16-SSOP device, while the 120 kbps full-load rate is suitable for legacy instrument-control protocols rather than high-speed data transfer. Its low 1 mA typical supply current helps with battery-operated test sets, and the shutdown current can reach 1 µA when the relevant low-power mode is used. Place the interface away from precision analog sections and verify the connector shield and ground strategy to prevent cable-borne noise from entering the measurement system.
Рекомендуется
Legacy Equipment Adapter
The SP3232EEA-L is a practical choice for a legacy-equipment adapter that lets a modern low-voltage USB, embedded, or industrial controller communicate with an RS-232 port. The IC handles the positive and negative voltage conversion required by RS-232 while operating from a single 3 V to 5.5 V rail, eliminating the older convention of using a separate ±12 V or ±5 V supply. Its 120 kbps minimum rate under full load is suitable for terminal, printer, controller, and service-port traffic. The adapter designer should confirm logic polarity, flow-control support, and connector wiring, because the verified excerpts do not state the complete pin-level function or hardware flow-control arrangement.
Рекомендуется
Portable Diagnostic Equipment
The SP3232EEA-L supports portable diagnostic equipment that transfers service logs, configuration data, or test results through an RS-232 service connector. Operation from 3.3 V permits direct integration with low-power embedded logic, and the 1 mA typical supply current reduces the burden on portable power systems. The integrated charge pump and 0.1 µF capacitor requirement at 3.3 V simplify the analog power section compared with discrete RS-232 drivers. For diagnostic equipment used in service environments, maintain a controlled ground return, keep transmit and receive routing separated where practical, and consider adding connector-level surge protection if cables may be longer than the application's ESD test configuration.
Рекомендуется
Embedded System Debug Interface
The SP3232EEA-L can provide an embedded system's debug, console, or configuration port without requiring a desktop-only RS-232 voltage source. Two receive channels allow the host to monitor status while the embedded processor transmits responses, and two transmitter channels are available for separate data or control signaling where pin allocation permits. The 120 kbps minimum full-load rate is more than adequate for diagnostic text and control protocols, while 3 V to 5.5 V operation supports common embedded rails. Before finalizing the PCB, confirm the exact SP3232EEA-L numbered pin functions from the manufacturer datasheet and ensure the firmware uses the same logic polarity and signal mapping as the installed board.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для SP3232EEA-L — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SP3232EBEA-L/TR | SP3232EUEY-L | SP3232EA-L | MAX3232CAE+ | SP3238ECY-L |
|---|---|---|---|---|---|---|
| Package | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP |
| Brand | MaxLinear, Inc. | MaxLinear, Inc. | MaxLinear, Inc. | MaxLinear, Inc. | Maxim Integrated | MaxLinear, Inc. |
Ключевые отличия
- Higher full-load signaling rate than the target (против SP3232EEA-L)
- Same 3.3 V and 5 V system compatibility (против MAX3232CAE+)
- Four-channel RS-232 integration in a compact package (против SP3238ECY-L)
- Specified operation across an extended temperature range (против MAX3232CAE+)
Заметки по проектированию
Place all charge-pump capacitors directly beside their designated IC pins and keep the associated loops as short as practical. The manufacturer specifies that 0.1 µF capacitors are sufficient for 3.3 V operation. Avoid routing the charge-pump current path through areas carrying precision analog signals, and maintain a continuous ground reference beneath and around the interface section. Exact capacitor pin assignments must be confirmed from the SP3222E/SP3232E datasheet before layout.
Do not assume that every similarly named SP3232 variant has identical shutdown, enable, or flow-control behavior. The verified excerpts establish the 120 kbps rating, 3 V to 5.5 V supply range, and 2/2 channel configuration for SP3232EEA-L, but they do not expose a complete numbered pin table. Verify pin names, logic polarity, charge-pump connections, and any shutdown-control state in the manufacturer datasheet before releasing artwork or production firmware.
Treat the RS-232 connector as an electrically noisy boundary. Keep the connector ground, cable shield, transceiver ground, and logic ground arranged according to the application's return-current strategy, and route driver outputs away from receiver inputs and sensitive clocks. The specified ±15 kV IEC 61000-4-2 and HBM protection does not eliminate requirement for external surge suppression on long industrial cables or when ground-potential differences are substantial.
Информация о соответствии
The verified excerpts do not explicitly provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for SP3232EEA-L. The interface IC is not presented as an automotive-qualified AEC-Q100 device.