SP3232EHCA-L/TR - 3.3V 460kbps RS-232 Transceiver | MaxLinear
N.º de pieza: SP3232EHCA-L/TR ✗ Fin de vidaSP3232EHCA-L/TR Descripción general
An RS-232 transceiver is an interface IC that converts logic-level signals between a digital system and the voltage-defined RS-232 port. The SP3232EH series belongs to the transceiver hierarchy within interface ICs, bridging embedded controllers, data-processing equipment, and legacy serial peripherals. Its two-driver, two-receiver arrangement supports full-duplex communication while keeping the external interface compact.
The main engineering features include a 460 kbps maximum data rate, operation across 3 V to 5.5 V, true EIA/TIA-232-F compliance, interoperability with RS-232 equipment operating from a 2.7 V supply, and enhanced 15 kV HBM ESD protection. The charge-pump supply architecture requires only 0.1 µF capacitors in 3.3 V operation, reducing external component count compared with implementations that need larger energy-storage capacitors.
Designed for portable and hand-held equipment, the SP3232EH combines four interface channels with low-voltage operation. Charge-pump circuitry generates the bipolar voltage levels required by RS-232 while the logic-side interface remains compatible with modern digital supply rails. Its 16-pin SSOP format supports compact layouts where a higher-pin-count package would be unnecessary.
Typical uses include notebook and palmtop computer serial ports, handheld instrumentation, point-of-sale equipment, industrial data acquisition, and embedded systems that retain an RS-232 connection. The 460 kbps capability is suitable for moderate-speed serial links, while 15 kV HBM protection improves interface robustness in exposed equipment.
When laying out the circuit, keep the charge-pump capacitors and RS-232 charge-pump nodes close to the device, preserve the datasheet-defined capacitor values, and route driver outputs and receiver inputs away from sensitive logic. Confirm that the selected cable and connector provide the intended ground reference and protection arrangement for the installation environment.
This product record combines electrical specifications, same-footprint family alternatives, application guidance, and design-focused considerations to support faster component selection, PCB planning, and RS-232 interface qualification.
Alternativas directas para SP3232EHCA-L/TR — 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 SP3232EHCA-L/TR (mismo factor de forma y huella) — difiere en Package, Maximum Data Rate, Operating Temperature, Mounting Type, Operating Supply Voltage.
SP3232ECA-L/TR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →SP3232ECY-L/TR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →SP3232EEY-L/TR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →SP3232EEN-L/TR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →SP3232EEA-L
✅ Sustitución directaConsulte el precio
Ver hoja de datos →SP3238EEA-L/TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
SP3232EHCA-L/TR Especificaciones
| Product Type | RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Transceiver Configuration | 2/2 full-duplex |
| Supply Voltage Range | 3 V to 5.5 V |
| Minimum Operating Supply | 2.7 V |
| Maximum Data Rate | 460 kbps |
| Protocol | RS-232 |
| Standards Compliance | True EIA/TIA-232-F |
| ESD Protection, Human Body Model | 15 kV |
| Charge-Pump Capacitor | 0.1 µF in 3.3 V operation |
| Encapsulado | 16-SSOP, 5.30 mm width |
| Tipo de montaje | Surface mount |
| Packaging | Tube |
Guía de configuración de pines de SP3232EHCA-L/TR 16-ssop, 5.30 mm width
Configuración de pines para SP3232EHCA-L/TR (encapsulado 16-ssop, 5.30 mm width). 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 SP3232EHCA-L/TR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
SP3232EHCA-L/TR es adecuado para 6 aplicacións: Portable Serial Communications, Notebook and Handheld Peripherals, Industrial Data Acquisition, Point-of-Sale Terminals, Embedded Test and Measurement, Legacy Equipment Maintenance.
Portable Serial Communications
The SP3232EHCA-L/TR fits portable equipment that must retain a true RS-232 port while operating from a 3.3 V system supply. Its two drivers and two receivers provide full-duplex connectivity, while the documented 460 kbps rate supports moderate-speed data links. The 0.1 µF charge-pump capacitors required in 3.3 V operation reduce board area, and 15 kV HBM ESD protection strengthens the connector-facing interface. In a handheld controller, the device can translate logic-level UART signals into RS-232 levels without requiring a separate 5 V supply.
Recomendado
Notebook and Handheld Peripherals
The SP3232EHCA-L/TR was developed for notebook, palmtop, and hand-held applications where a legacy serial connector must coexist with low-voltage digital electronics. The 2/2 channel arrangement connects two data directions, and the 3 V to 5.5 V range accommodates both 3.3 V and 5 V system rails. Its 16-SSOP package limits board area, while the 460 kbps data rate is appropriate for configuration ports, service interfaces, and peripheral synchronization rather than sustained high-bandwidth transfers.
Recomendado
Industrial Data Acquisition
The SP3232EHCA-L/TR can bridge a controller to legacy RS-232 test or data-acquisition equipment when the system already includes ESD-conscious cabling and grounding. The two-driver, two-receiver configuration supports simultaneous command and response paths, and 460 kbps operation is sufficient for many instrument-control protocols. Its 15 kV HBM protection improves robustness at an exposed connector, although industrial surge, ground-loop, and long-cable conditions still require system-level design review and suitable protection.
Recomendado
Point-of-Sale Terminals
The SP3232EHCA-L/TR suits point-of-sale terminals, receipt peripherals, and service equipment using RS-232 command links. It provides two transmit and two receive channels from a single 3.3 V or 5 V rail, eliminating a separate legacy interface supply in suitable designs. The 460 kbps rate supports transaction traffic and diagnostic protocols, while compact 16-SSOP construction preserves board area. Designers should preserve the manufacturer charge-pump layout and verify connector-level protection because internal HBM ratings do not replace cable or enclosure design.
Recomendado
Embedded Test and Measurement
The SP3232EHCA-L/TR is useful in embedded instrumentation that must communicate with a host through RS-232. The 2/2 transceiver arrangement allows separate transmit and receive paths, while 460 kbps operation covers many configuration, logging, and calibration streams. Operation from a 3 V to 5.5 V supply simplifies integration with low-voltage processors, and 0.1 µF charge-pump capacitors in 3.3 V mode reduce external component count. For bench-adjacent equipment, add appropriately selected external surge and cable protection based on the installation environment.
Recomendado
Legacy Equipment Maintenance
The SP3232EHCA-L/TR supports maintenance adapters that connect modern test computers or embedded controllers to legacy RS-232 equipment. Because the device is obsolete, engineers must carefully confirm the complete ordering suffix, pinout, operating grade, and lot traceability before release. Its established 2/2 RS-232 architecture and 16-SSOP footprint simplify repair-board replication when the manufacturer documentation confirms electrical equivalence. Production users should also evaluate an active lifecycle alternative to reduce sourcing risk.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SP3232EHCA-L/TR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | SP3232ECA-L/TR | SP3232ECY-L/TR | SP3232EEY-L/TR | SP3232EEN-L/TR |
|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear |
| Package | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP |
| Driver and Receiver Count | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 |
| Interface Protocol | RS-232 | RS-232 | RS-232 | RS-232 | RS-232 |
| Ordering-Suffix Characteristics | EHCA ordering variant | ECA ordering variant | ECY ordering variant | EEY ordering variant | EEN ordering variant |
Diferenciadores clave
- Low-voltage RS-232 operation with a compact charge-pump network (frente a SP3232ECA-L/TR)
- Enhanced connector-side ESD rating (frente a SP3238EEA-L/TR)
- Full-duplex channel arrangement in a 16-SSOP footprint (frente a SP232AET-L/TR)
Notas de diseño
Place the manufacturer-recommended charge-pump capacitors directly beside their associated pins and keep the charge-pump traces short. The SP3232EH uses 0.1 µF capacitors in 3.3 V operation. Avoid routing these switching nodes beneath sensitive analog or communication traces, and maintain the component spacing and ground-return arrangement shown in the MaxLinear application circuit. Exact capacitor tolerances and voltage ratings should follow the manufacturer recommendations.
Keep RS-232 driver outputs and receiver inputs away from clock, UART, and analog-sensing traces to reduce capacitive coupling from the charge-pump and line-driver stages. Route the connector side as an unprotected or separately protected interface zone, and provide a low-impedance chassis or signal-ground return according to the cable topology. The IC's 15 kV HBM rating addresses specified human-body contact conditions but does not eliminate external surge or ground-loop risks.
Do not substitute a similarly named SP3232 or SP3238 device solely because it uses a 16-SSOP package. Before replacement, verify all 16 connections, supply range, driver and receiver count, data rate, charge-pump capacitor values, operating-temperature grade, ESD rating, and shutdown behavior against the manufacturer datasheet. Because SP3232EHCA-L/TR is obsolete, also obtain lot traceability and lifecycle confirmation to prevent unintended mixing with electrically different ordering suffixes.
Información de cumplimiento
The product information identifies a lead-free status field but does not provide a complete compliance statement. RoHS, REACH, AEC-Q100, halogen-free, and conflict-minerals statuses therefore remain unconfirmed. The interface is described as meeting true EIA/TIA-232-F standards from a 5.5 V supply.
