SP3232EHEA-L/TR - 460kbps RS-232 Transceiver | MaxLinear
Référence : SP3232EHEA-L/TR ✗ Fin de vieSP3232EHEA-L/TR Présentation
An RS-232 transceiver is an interface IC that converts logic-level digital signals into RS-232 voltage levels and receives RS-232 signals back into logic-level outputs. It belongs to the serial-interface hierarchy, alongside UART controllers and isolation devices. This makes the SP3232EHEA-L/TR suitable for connecting a host, embedded controller, or industrial terminal to a legacy peripheral through a wired serial port.
Key features include true EIA/TIA-232-F operation from a supply as low as +2.7V, interoperability with RS-232 equipment powered from +2.7V, a 460kbps maximum data rate, and 300mV receiver hysteresis. The charge-pump architecture requires only 0.1uF capacitors during 3.3V operation, reducing external component count in portable designs while preserving standard RS-232 signal levels.
Internally, the dual-driver and dual-receiver arrangement supports two independent communication channels in full-duplex operation. Receiver hysteresis improves noise immunity around the logic threshold, while the enhanced ESD rating adds protection for connector-adjacent circuitry. The single-supply charge-pump design allows operation from modern 3.3V system rails without a separate negative RS-232 supply.
Typical applications include point-of-sale terminals, portable data-collection equipment, industrial serial adapters, diagnostic interfaces, and battery-powered handheld computers. The 16-pin SSOP supports compact PCB layouts, while the 460kbps data rate accommodates legacy peripherals that require more speed than a conventional low-speed RS-232 link.
When laying out the circuit, place charge-pump capacitors and the interface-side protection network close to their associated pins, and route the RS-232 connector path away from sensitive digital and analog traces. Confirm signal polarity and connector pin assignment before PCB release because RS-232 uses inverted logic in many controller implementations.
This page combines the manufacturer's product information, exact-MPN distributor records, technical feature details, package information, practical design guidance, and same-family drop-in options. It is intended to help engineers identify the correct channel count, speed, supply range, package, and replacement path before committing a board layout.
Alternatives de remplacement direct pour SP3232EHEA-L/TR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec SP3232EHEA-L/TR (même facteur de forme et même empreinte) — différant par Package, Maximum Data Rate, Operating Temperature, Mounting Type, Operating Supply Voltage.
SP3232EEA-L/TR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SP3232EEN-L/TR
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →SP3232EEY-L/TR
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →SP3232ECY-L/TR
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →SP3232ECA-L/TR
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →SP3232EHEA-L/TR Spécifications
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Transceiver Configuration | 2/2 full duplex |
| Protocol | RS-232 |
| Supply Voltage Range | 3V to 5.5V |
| Minimum Operating Supply | +2.7V |
| Maximum Data Rate | 460kbps |
| Receiver Hysteresis | 300mV |
| Charge-Pump Capacitor | 0.1uF at 3.3V operation |
| ESD Protection | +15kV human body model |
| Standards Compliance | EIA/TIA-232-F |
| Plage de température de fonctionnement | -40C to +85C |
| Boîtier | 16-SSOP (0.209, 5.30mm width) |
| Type de montage | Surface mount |
| Packaging | Tube |
| Statut RoHS | Compliant |
| Product Type | RS-232 interface transceiver |
Guide de configuration des broches du SP3232EHEA-L/TR 16-ssop (0.209, 5.30mm width)
Configuration des broches du SP3232EHEA-L/TR (boîtier 16-ssop (0.209, 5.30mm width)). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour SP3232EHEA-L/TR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
SP3232EHEA-L/TR convient pour 6 applications: Portable Data Collectors, Point-of-Sale Terminals, Industrial Serial Adapters, Diagnostic and Service Interfaces, Battery-Powered Handheld Computers, Legacy Peripheral Connectivity.
Portable Data Collectors
The SP3232EHEA-L/TR fits portable data-collection equipment that communicates with legacy RS-232 peripherals through a wired service or docking interface. Its 3V to 5.5V operating range supports 3.3V handheld systems, while the 460kbps maximum rate provides useful throughput for configuration logs and transaction records. The two-driver, two-receiver arrangement can support full-duplex command and response traffic. Its +15kV human-body-model ESD rating is also relevant near an exposed connector, although the complete enclosure and cable path still need system-level protection.
Recommandé
Point-of-Sale Terminals
The SP3232EHEA-L/TR is suitable for point-of-sale equipment that must retain an RS-232 connection to printers, scales, or older service peripherals. Two transmitters and two receivers allow more than one directional signal path, and the 460kbps capability is useful for burst data transfer. The 16-SSOP package preserves board area in compact terminals, while the charge-pump supply needs only 0.1uF capacitors during 3.3V operation. Design the connector return path and logic reference carefully to prevent ground offsets from creating data errors.
Recommandé
Industrial Serial Adapters
The SP3232EHEA-L/TR can be used in industrial serial adapters that bridge modern logic to legacy RS-232 equipment. Its 460kbps data rate covers common service and control protocols, and its -40C to +85C operating range supports wider industrial temperature conditions than typical consumer interfaces. The 300mV receiver hysteresis helps distinguish valid signals amid noise. For installations with long cables or severe electrical transients, add appropriately designed protection and consider a differential RS-485 interface such as SP490EEN-L/TR instead of extending RS-232 beyond its intended cable environment.
Recommandé
Diagnostic and Service Interfaces
The SP3232EHEA-L/TR is appropriate for diagnostic equipment that accesses legacy equipment through a service port. Full-duplex operation allows command transmission and response reception through one 2/2 transceiver, while 460kbps can shorten service sessions when the connected device supports that rate. The single-supply charge-pump arrangement eliminates the need for a separate negative voltage source, simplifying portable service tools. Use controlled signal levels, a defined connector pinout, and firmware timeout handling because legacy devices may vary in logic polarity and handshake behavior.
Recommandé
Battery-Powered Handheld Computers
The SP3232EHEA-L/TR fits battery-powered handheld computers that retain an RS-232 connection for docking, programming, or legacy peripheral support. The device accepts a 3.3V system supply and its 3.3V charge-pump configuration requires only 0.1uF capacitors, reducing board area and external power complexity. Two drivers and two receivers provide a full-duplex interface when both sides transmit. Designers should still calculate the average and peak supply current in the complete handheld and enable the interface only when needed if the surrounding platform provides shutdown control.
Recommandé
Legacy Peripheral Connectivity
The SP3232EHEA-L/TR can bridge a modern microcontroller to legacy RS-232 printers, scales, meters, or programming fixtures. Its 460kbps rate accommodates common serial-control traffic, and the dual full-duplex configuration simplifies command-and-response protocols. The 16-SSOP package is suitable for compact interface cards, but the RS-232 pinout must match the connector rather than being assumed from a newer TTL serial standard. Where both devices share ground, verify that ground-potential differences remain below the receiver's tolerated range.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour SP3232EHEA-L/TR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | SP3232EEA-L/TR | SP3232EEN-L/TR | SP3232EEY-L/TR | SP3232ECY-L/TR | SP3232ECA-L/TR |
|---|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear |
| Package | SSOP-16 | SSOP-16 | SSOP-16 | SSOP-16 | SSOP-16 | SSOP-16 |
Principaux différenciateurs
- Documented enhanced ESD capability (vs SP3232EEA-L/TR)
- Full 2/2 channel configuration (vs SP3232ECY-L/TR)
- 460kbps maximum data rate (vs SP3232EEN-L/TR)
- Compact low-voltage charge-pump implementation (vs SP3232EEY-L/TR)
Notes de conception
Place the 0.1uF charge-pump capacitors directly between their designated IC pins with the shortest possible traces. Keep the charge-pump loop compact, use a solid ground reference, and avoid routing it beneath analog or high-speed digital sections. The SSOP footprint is small enough that pin escapes and capacitor orientation can dominate loop inductance, so follow the pin-description table and recommended capacitor layout in the manufacturer datasheet.
Keep RS-232 driver and receiver nets away from clocks, ADC inputs, switching-regulator nodes, and other sensitive analog signals. RS-232 uses large bipolar voltage swings relative to logic levels, so even a short parallel run can create coupling. Maintain a continuous ground reference beneath the interface where practical, and use a proper connector shield and chassis-ground strategy when the cable is external to the enclosure.
Do not assume every SP3232E order code has the same H, EA, or suffix-specific behavior. The target's obsolete status also makes it important to distinguish an exact replacement from a merely related family member. Before substitution, compare channel count, enable or shutdown behavior, charge-pump connections, temperature grade, ESD rating, data rate, package dimensions, and tape orientation. A footprint match alone does not guarantee electrical drop-in compatibility.
RS-232 driver transitions can radiate onto adjacent PCB traces or cables. Route each driver output directly toward its connector with minimal stubs, place optional series damping near the source if ringing appears, and keep the return path available. If the interface shares a board with switching converters, use separate return-current paths and evaluate additional filtering or isolation rather than relying only on software timing margin.
Informations de conformité
RoHS compliance is stated for the exact MPN in an indexed product record. No explicit REACH, lead-free, halogen-free, or conflict-minerals statement was established for the exact suffix.
