SP3232EEA-L - 120kbps RS-232 Transceiver | MaxLinear
N.º de pieza: SP3232EEA-L ✓ ActivoSP3232EEA-L Descripción general
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SP3232EEA-L pin functions against the manufacturer datasheet before layout because the verified distributor excerpts do not publish a complete pin table.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.
Alternativas directas para SP3232EEA-L — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con SP3232EEA-L (mismo factor de forma y huella) — difiere en Data Rate.
SP3232EBEA-L/TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3232EUEY-L
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3232EA-L
✅ Sustitución directaConsulte el precio
Ver hoja de datos →MAX3232CAE+
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3238ECY-L
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3232EEA-L Especificaciones
| Product Type | RS-232 transceiver IC |
| Transceiver Configuration | 2 transmitters and 2 receivers |
| Velocidad de datos | 120 kbps minimum under full load |
| Tensión de alimentación de funcionamiento | 3 V to 5.5 V |
| Typical Supply Current | 1 mA |
| Corriente de apagado | 1 µA |
| Charge-Pump Capacitor Requirement | 0.1 µF at 3.3 V |
| Rango de temperatura de funcionamiento | -40°C to +85°C |
| Encapsulado | 16-pin SSOP |
| Tipo de montaje | 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 |
Guía de configuración de pines de SP3232EEA-L 16-pin ssop
Configuración de pines para SP3232EEA-L (encapsulado 16-pin ssop). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para SP3232EEA-L.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
SP3232EEA-L es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SP3232EEA-L — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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. |
Diferenciadores clave
- Higher full-load signaling rate than the target (frente a SP3232EEA-L)
- Same 3.3 V and 5 V system compatibility (frente a MAX3232CAE+)
- Four-channel RS-232 integration in a compact package (frente a SP3238ECY-L)
- Specified operation across an extended temperature range (frente a MAX3232CAE+)
Notas de diseño
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.
Información de cumplimiento
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.