MAX3232EUE+ - 3.0-5.5V 1Mbps RS-232 Transceiver | Maxim
N.º da peça: MAX3232EUE+ ✓ AtivoMAX3232EUE+ Visão geral
An RS-232 transceiver is an interface IC that converts between logic-level signals used by digital systems and bipolar voltage signals used by RS-232 links. It belongs to the interface IC category and connects host controllers, test equipment, industrial systems, and peripheral controllers through the EIA RS-232 standard. A dual transceiver supports two communication channels on one device while reducing board area and component count.
The MAX3232EUE+ operates from 3.0 V to 5.5 V and supports data rates up to 1 Mbps. Its true RS-232 transmitter output stage uses low-dropout operation, while the internal dual charge pump requires only four external 0.1 uF capacitors. The 16-TSSOP package is suitable for compact surface-mount equipment, although its narrow lead pitch requires careful PCB assembly and soldering.
The transceiver architecture separates the transmit and receive paths, allowing one side of the interface to remain active while the other handles incoming data. This makes the device suitable for systems with asynchronous serial links, local control ports, and communication with legacy RS-232 equipment. The single-supply implementation also simplifies power design in systems that do not provide a separate negative voltage rail.
Typical applications include industrial controller serial ports, laboratory data acquisition, point-of-sale equipment, security systems, embedded instrument interfaces, and general-purpose RS-232 links. Systems requiring two serial channels can use the two transmitters and two receivers in one package. The 1 Mbps capability accommodates substantially faster links than the commonly used 115.2 kbaud RS-232 rate.
When placing the device, position the four 0.1 uF charge-pump capacitors close to their associated pins and preserve the pinout shown in the manufacturer datasheet. Confirm cable-length limitations because higher baud rates reduce the practical distance supported by RS-232. The interface also needs appropriate protection and grounding when connected to exposed or industrial cabling.
This page combines electrical specifications, package guidance, application fit, comparison data, and drop-in replacement information to support faster component selection and PCB implementation. It also identifies the key technical distinctions engineers should verify when considering another RS-232 transceiver.
Alternativas drop-in para MAX3232EUE+ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MAX3232EUE+ (mesmo formato e footprint) — diferindo em Package, Supply Voltage Range, ESD Protection, Maximum Data Rate, Number of Receivers.
MAX3232EEUE+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3232CPWR
✅ Drop-InConsulte o preço
Ver ficha técnica →MAX3232ECUE+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3232CUE+T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3265EUE+T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3232IPW
✅ Drop-InConsulte o preço
Ver ficha técnica →MAX3232EUE+ Especificações
| Technology | RS-232 |
| Device Type | Dual Transceiver |
| Number of Transmitters | 2 |
| Number of Receivers | 2 |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Maximum Data Rate | 1 Mbps |
| RS-232 Implementation | True RS-232 |
| Charge Pump | Dual charge pump |
| External Charge-Pump Capacitors | 4 x 0.1 uF |
| Package Type | 16-pin TSSOP |
| Tipo de montagem | Surface mount |
| Faixa de temperatura de operação | 0 C to +70 C |
| Status RoHS | unknown |
| Lead-Free Status | unknown |
Guia de Configuração de Pinos do MAX3232EUE+ 16-pin tssop
Configuração de pinos para MAX3232EUE+ (pacote 16-pin tssop). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para MAX3232EUE+.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MAX3232EUE+ é adequado para 6 aplicaçãos: Industrial Controller Serial Ports, Laboratory Data Acquisition, Point-of-Sale Equipment, Embedded Instrument Interfaces, Security and Access Systems, General-Purpose Dual Serial Link.
Industrial Controller Serial Ports
The MAX3232EUE+ fits industrial controller serial ports that require two bidirectional RS-232 channels without a negative power rail. Its 3.0 V to 5.5 V operating range supports common embedded supply levels, while the two transmitters and two receivers reduce the number of interface packages on the board. The 1 Mbps maximum rate also provides substantial headroom above 115.2 kbaud. Use the dual charge-pump arrangement with four 0.1 uF capacitors placed close to their pins. For field wiring, add the ESD, surge, isolation, and grounding measures required by the installation environment rather than assuming the IC alone protects the connector.
Recomendado
Laboratory Data Acquisition
The MAX3232EUE+ is suitable for laboratory instruments that exchange commands and measurement data with a host computer over RS-232. Two transmit and two receive channels can support separate control and data paths, and the 1 Mbps capability allows operation beyond the conventional 115.2 kbaud RS-232 rate. Because the device operates from 3.0 V to 5.5 V, it can share a regulated rail with modern test hardware. Place the four required 0.1 uF charge-pump capacitors according to the manufacturer layout and keep the serial route away from sensitive analog sections. Verify the instrument's requested logic levels, cable length, and grounding before releasing the PCB design.
Recomendado
Point-of-Sale Equipment
The MAX3232EUE+ can connect a point-of-sale terminal or peripheral controller to legacy RS-232 equipment using its two transmitters and two receivers. Its 3.0 V to 5.5 V supply range supports compact embedded systems, while true RS-232 operation produces the bipolar signal levels expected by the connected equipment. The 16-pin TSSOP package helps limit board area, and 1 Mbps operation provides more throughput than a 115.2 kbaud link. Designers should account for the narrower TSSOP lead pitch during assembly and inspection. Use the four 0.1 uF charge-pump capacitors close to the IC, and confirm whether the peripheral requires a hardware handshake or software-controlled flow control.
Recomendado
Embedded Instrument Interfaces
The MAX3232EUE+ is appropriate for embedded instruments that expose a service port or configuration channel through RS-232. The single 3.0 V to 5.5 V supply avoids requiring a negative rail, and the dual-transceiver configuration provides flexibility for two ports within one compact 16-pin TSSOP package. Its 1 Mbps maximum rate can shorten transfer time for configuration files or diagnostic information. Keep the charge-pump capacitors compact and route the interface away from high-current switching nodes. If the service connector can be exposed to user cables, treat connector protection and chassis grounding as separate PCB-level design requirements.
Recomendado
Security and Access Systems
The MAX3232EUE+ fits security controllers that communicate with readers, access panels, or configuration tools over RS-232. Its two transmitters and two receivers allow multiple device roles in one interface IC, while operation from 3.0 V to 5.5 V supports common controller supply rails. The 1 Mbps rating exceeds the bandwidth of many access-control protocols, although the installed cable determines the practical usable distance. A security installation often places the serial connector outside an enclosure, making external ESD and surge protection essential. Follow the manufacturer layout for the four 0.1 uF capacitors and validate the complete signal path against the connected equipment's voltage levels and timing.
Recomendado
General-Purpose Dual Serial Link
The MAX3232EUE+ is a practical choice for a general-purpose dual serial interface in compact embedded equipment. Two transmitters and two receivers can implement two point-to-point RS-232 links or provide dedicated directions for a host interface. The 3.0 V to 5.5 V supply range simplifies integration with low-voltage processors, and the 1 Mbps capability supports faster transfer rates than a traditional 115.2 kbaud port. The 16-pin TSSOP package reduces footprint but requires accurate land-pattern design and careful assembly. Place the four 0.1 uF charge-pump capacitors directly beside the associated pins, observe the manufacturer's pin numbering, and confirm that unused receive or transmit channels are handled according to the datasheet.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX3232EUE+ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MAX3232EEUE+ | MAX3232CPWR | MAX3232ECUE+ | MAX3232CUE+T | MAX3265EUE+T | MAX3232IPW |
|---|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Texas Instruments |
| Package | TSSOP-16 | TSSOP-16 | TSSOP-16 | TSSOP-16 | TSSOP-16 | TSSOP-16 | TSSOP-16 |
| Device Type | Dual Transceiver | Dual Transceiver | RS-232 Transceiver | RS-232 Transceiver | RS-232 Transceiver | RS-232 Transceiver | RS-232 Transceiver |
| Maximum Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| RoHS Status | unknown | unknown | compliant | unknown | unknown | unknown | unknown |
Principais diferenciais
- Adds a stated 15 kV ESD-protection rating to the same MAX3232 interface class (vs MAX3232EUE+)
- Provides a second-source path without changing the 16-pin TSSOP footprint (vs MAX3232IPW)
- Combines two transmitters and two receivers in one 16-pin TSSOP package (vs MAX202CDR)
- Supports a low 3.0 V supply while retaining true RS-232 operation (vs MAX3265EUE+T)
Notas de projeto
Place the four required 0.1 uF charge-pump capacitors as close as practical to the MAX3232EUE+ pins identified in the manufacturer reference circuit. Keep their return-current paths compact and away from sensitive receiver traces. The 16-pin TSSOP footprint has a narrow lead pitch, so verify the land pattern, paste mask, and assembly process before releasing artwork.
Do not assume that a 1 Mbps-capable transceiver guarantees 1 Mbps communication over every RS-232 cable. Cable length, capacitance, grounding, logic levels, and connected-device timing can reduce the usable rate. Confirm the remote equipment's electrical specification and keep normal 115.2 kbaud operation in mind when the installation includes long or unshielded cabling.
A true RS-232 transmitter generates bipolar voltage levels from the 3.0 V to 5.5 V supply through the internal charge pumps. Route the cable-side and logic-side nets separately to reduce coupling between switching-generated transients and receiver inputs. Use a stable ground reference between communicating systems and follow the manufacturer grounding recommendations for the completed equipment.
Assign the transmitter and receiver channels according to the direction of each serial link, and use the manufacturer pin-description table when implementing the footprint. Two transmitters and two receivers provide flexibility, but they do not eliminate the need to confirm handshake behavior, connector pin numbering, and the electrical interface expected by the remote system.
Informações de conformidade
The MAX3232CPWR comparison identifies RoHS compliance, but no explicit RoHS, REACH, lead-free, or halogen-free statement for the exact MAX3232EUE+ ordering code was confirmed. AEC-Q100 is not applicable to this commercial interface IC.