SP3232ECN-L - 120 kbps RS-232 Transceiver | MaxLinear
Teilenummer: SP3232ECN-L ✓ AktivSP3232ECN-L Übersicht
An RS-232 transceiver is an interface integrated circuit that combines line drivers, line receivers, and the charge-pump circuitry needed to generate the bipolar voltage swings required by the EIA/TIA-232 standard. Within the interface hierarchy, the SP3232ECN-L belongs to the RS-232 transceiver family, which sits below interface transceivers and above individual drivers and receivers.
The SP3232ECN-L uses a high-efficiency charge-pump supply that requires only 0.1 uF capacitors during 3.3 V operation. This allows the transceiver to operate from 3 V to 5.5 V while maintaining true RS-232 performance. Its 2/2 channel arrangement provides two transmit paths and two receive paths in one package, reducing board area compared with separate driver and receiver ICs.
The E-qualified version also provides enhanced electrostatic-discharge protection of up to plus or minus 15 kV under both the IEC 61000-4-2 system and the Human Body Model. The operating temperature range shown by distributor data is 0 C to 70 C. This combination of low supply voltage, integrated charge pump, and reinforced ESD protection makes the part useful in equipment exposed to electrically noisy or physically connected environments.
Typical applications include notebook and palmtop computer serial ports, industrial control panels, point-of-sale terminals, data-acquisition equipment, and service interfaces for embedded systems. The 120 kbps signaling rate is appropriate for legacy RS-232 links carrying configuration commands, diagnostic data, and control traffic rather than continuous high-speed bulk transfers.
When designing the circuit, verify the charge-pump capacitor values, driver and receiver connection details, and interface protection requirements against the manufacturer data sheet. Keep RS-232 driver outputs away from sensitive analog inputs, provide controlled return paths, and consider adding external surge protection when a cable can leave the enclosure.
This page consolidates manufacturer and distributor information, package details, commercial availability, drop-in replacement options, application guidance, and practical design notes into one engineering reference for evaluating the SP3232ECN-L in new and existing serial-interface designs.
Drop-in-Alternativen für SP3232ECN-L – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit SP3232ECN-L (gleiche Bauform und Footprint) – abweichend in Device Type, Maximum Data Rate, Package, Supply Voltage Range, Charge-Pump Architecture.
SP3232EEN-L
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →SP3232EBCN-L
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SP232ECT-L
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →MAX3232CSE+
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →MAX3232ESE+
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →SP3232ECN-L Technische Daten
| Product Type | RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Channel Configuration | 2 transmit and 2 receive |
| Maximum Data Rate | 120 kbps |
| Single Supply Voltage Range | 3 V to 5.5 V |
| Charge-Pump Capacitor Requirement | 0.1 uF in 3.3 V operation |
| ESD Protection, IEC 61000-4-2 | plus or minus 15 kV |
| ESD Protection, Human Body Model | plus or minus 15 kV |
| Betriebstemperaturbereich | 0 C to 70 C |
| Gehäuse | 16-pin narrow SOIC |
| Montageart | Surface Mount |
| Logic Compatibility | TTL-compatible transceiver |
| RS-232 Standard | EIA/TIA-232 |
| RoHS-Status | RoHS compliant |
| Charge-Pump Architecture | High-efficiency internal charge pump |
SP3232ECN-L 16-pin narrow soic Pinbelegungsleitfaden
Pinbelegung für SP3232ECN-L (16-pin narrow soic-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für SP3232ECN-L.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
SP3232ECN-L ist geeignet für 6 Anwendungs: Portable Computer Serial Port, Industrial Control Panel Interface, Point-of-Sale Terminal Connectivity, Embedded System Debug and Service Port, Data Acquisition Equipment, Medical and Laboratory Equipment.
Portable Computer Serial Port
The SP3232ECN-L suits legacy serial ports in notebooks, palmtop computers, and portable data-capture equipment where the host logic operates from 3.3 V but the cable requires true RS-232 levels. Its internal charge pump produces the required bipolar signals from a 3 V to 5.5 V supply and needs only 0.1 uF capacitors in 3.3 V operation. Two transmitters and two receivers support bidirectional console, service, and configuration links without requiring separate driver and receiver packages. The 120 kbps rate is appropriate for command traffic and diagnostic data rather than high-volume file transfers.
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Industrial Control Panel Interface
The SP3232ECN-L can connect a low-voltage controller to industrial peripherals that retain RS-232 connections. Its 2/2 arrangement supports two command channels and two status or acknowledgment channels, while the internal charge pump removes the need for a separate negative supply generator. The plus or minus 15 kV IEC 61000-4-2 and Human Body Model ratings add valuable protection for panels with exposed service connectors. Engineers should confirm the 0 C to 70 C operating range and add external surge protection where cables extend outside the enclosure.
Empfohlen
Point-of-Sale Terminal Connectivity
A point-of-sale terminal can use the SP3232ECN-L to interface a serial receipt printer, scanner, or service connector that expects RS-232 electrical levels. The 120 kbps signaling rate is more than adequate for transaction messages, status responses, and short configuration commands. Running from a 3.3 V system rail avoids an unnecessary 5 V converter, while the integrated charge pump and 0.1 uF capacitor requirement keep the external support network compact. ESD protection is valuable at user-accessible connectors, although cable routing and chassis grounding remain important.
Empfohlen
Embedded System Debug and Service Port
The SP3232ECN-L provides a practical service interface between an embedded controller and a laptop or maintenance terminal. Two receive channels can return status and diagnostic messages, while two transmit channels can carry commands and log data. Its single 3 V to 5.5 V operating range simplifies design in systems that lack a legacy plus 5 V rail. The 120 kbps limit suits interactive diagnostic sessions and firmware-boot logging. Firmware designers should define the ground reference carefully and avoid connecting RS-232 driver outputs to unrelated TTL inputs.
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Data Acquisition Equipment
Laboratory and industrial data-acquisition equipment can use the SP3232ECN-L for legacy instrument control or RS-232-equipped sensors. The 2/2 channel count permits simultaneous command transmission and measurement-status reception, while 120 kbps is adequate for many short sensor records and control packets. Operation from 3.3 V simplifies mixed-signal board partitioning, and the enhanced ESD ratings improve robustness around externally accessible equipment. For long cables or industrial environments, engineers should retain the specified charge-pump capacitors and consider TVS protection at the connector.
Empfohlen
Medical and Laboratory Equipment
The SP3232ECN-L can serve older laboratory instruments and service interfaces that expose RS-232 ports. A 3.3 V control board can communicate with a 5 V instrument while avoiding a separate negative-voltage rail, and the integrated charge pump simplifies the analog and digital power partitioning. The 120 kbps rate supports configuration commands and periodic instrument status reports. Because the published temperature range is 0 C to 70 C and the exact medical-system qualification is not stated, the device should not be assumed suitable for extended-temperature or patient-connected circuits without separate review.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für SP3232ECN-L – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | SP3232EEN-L | SP3232EBCN-L | SP232ECT-L | MAX3232CSE+ | MAX3232ESE+ |
|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC - same footprint | 16-SOIC - same footprint | 16-SOIC - same footprint | 16-SOIC - same footprint | 16-SOIC - same footprint |
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | Maxim Integrated | Maxim Integrated |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Wichtigste Unterscheidungsmerkmale
- Single-supply operation extends down to 3 V (vs. MAX3232CSE+)
- Exact same-family 120 kb/s replacement path (vs. SP3232EEN-L)
- Higher-rate family option when link speed is the priority (vs. SP3232EBCN-L)
- Integrated ESD protection for connector-facing circuits (vs. MAX3232ESE+)
Designhinweise
Use the charge-pump capacitor values specified by the manufacturer and place them close to the corresponding pins. The SP3232E family information confirms that 0.1 uF capacitors are sufficient for 3.3 V operation. Decoupling requirements, capacitor tolerance, and maximum capacitor values should still be checked against the current manufacturer data sheet. Stable charge-pump operation is essential because excessive ripple can degrade the generated RS-232 voltage levels.
Route the two driver outputs and two receiver inputs away from sensitive analog nodes, clocks, and high-speed switching traces. Keep the RS-232 interface area at the board edge when it connects to an external cable, and provide a low-impedance return path between the transceiver ground and the connected equipment. Avoid routing protected or unprotected RS-232 signals directly beneath the charge-pump section.
Do not treat an RS-232 transceiver input as a 3.3 V TTL input without checking the receiver thresholds and supply arrangement. Likewise, a TTL UART cannot connect directly to an RS-232 driver output. Verify the complete pinout, enable state, ground reference, and charge-pump connections in the manufacturer data sheet before layout because the verified web results confirm the 16-SOIC package but do not expose the full numbered pin list.
The integrated ESD ratings reduce risk at the IC, but they do not eliminate the need for good enclosure and cable design. Keep the RS-232 trace as short as practical, provide a solid ground reference, and avoid placing unprotected cable routing next to switching regulators or high-current power stages. If the connector is exposed to severe industrial transients, evaluate an external TVS or other surge-protection network that does not distort normal RS-232 signaling.
Compliance-Informationen
RoHS compliance is identified by the supplied Xecor comparison for SP3232ECN-L. Reach, lead-free, halogen-free, and conflict-minerals declarations were not present in the verified data. AEC-Q100 is not applicable because this is an interface IC rather than an automotive-qualified device.
