MAX3243MPWREP - 3/5 RS-232 Transceiver | Texas Instruments
N.º da peça: MAX3243MPWREP ✓ AtivoMAX3243MPWREP Visão geral
An RS-232 transceiver is an interface IC that converts logic-level signals into RS-232 line levels and converts received RS-232 signals back into digital logic levels. The MAX3243 belongs to the RS-232 transceiver family, within the broader interface IC and semiconductor hierarchy. Its integrated charge pumps generate the positive and negative voltages required by RS-232, reducing the need for external discrete supply circuitry.
The principal features of the MAX3243MPWREP are its three-driver, five-receiver configuration, 3V-to-5.5V supply operation, and 250 kbps data-rate capability. The 3V minimum supply voltage supports integration with modern low-voltage digital controllers, while the 5.5V maximum accommodates conventional 5V systems. Pin-to-pin ±15 kV HBM ESD protection adds robustness at exposed serial connectors.
The device includes a dual charge-pump circuit to support RS-232 signal levels from a single supply. Five receivers allow multiple incoming channels to be monitored, while three drivers support outbound RS-232 connections. The asymmetric channel count makes the device suitable for designs that require more receive capability than transmit capability, such as control, monitoring, or diagnostic equipment.
Typical applications include industrial serial controllers, point-of-sale terminals, instrumentation, data-collection systems, and RS-232 port expansion. The 250 kbps maximum data rate is appropriate for asynchronous control links and moderate-rate data transfers. System designers must still account for cable length, connector exposure, signal integrity, and the electrical limitations of the RS-232 standard.
Decoupling capacitors should be placed close to the charge-pump and supply pins, while external protection may be needed when cables extend beyond the enclosure or connect to electrically noisy equipment. Verify the pin configuration and capacitor values in the manufacturer datasheet before layout because the dual charge-pump topology depends on correct external capacitor placement.
This page combines the MAX3243MPWREP electrical characteristics, drop-in replacement options, application guidance, and practical layout considerations to support faster component selection and board-level implementation. It also provides a concise comparison of channel count, voltage range, data rate, protection, package, and temperature coverage for engineering review.
Alternativas drop-in para MAX3243MPWREP — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
MAX3243EIPWR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX3243EUPWR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX3243EAPWR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX3243ECPWR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX3243EEPWR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX3243MPWREP Especificações
| Product Type | Multichannel RS-232 line driver and receiver |
| Supply Voltage Range | 3 V to 5.5 V |
| Number of Drivers | 3 |
| Number of Receivers | 5 |
| Maximum Data Rate | 250 kbps |
| ESD Protection | ±15 kV HBM |
| RS-232 Compliance | TIA/EIA-232-F |
| Charge-Pump Configuration | Dual |
| Encapsulamento | 28-pin TSSOP |
| Operating Temperature Maximum | 125 °C |
| Mounting Technology | Surface mount |
| Logic and Supply Compatibility | 3 V and 5 V systems |
| Driver Channel Count | 3 RS-232 outputs |
| Receiver Channel Count | 5 RS-232 inputs |
| ESD Protection Scope | Pin to pin on serial-port connection pins, including GND |
Guia de Configuração de Pinos do MAX3243MPWREP 28-pin tssop
Configuração de pinos para MAX3243MPWREP (pacote 28-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 MAX3243MPWREP.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MAX3243MPWREP é adequado para 6 aplicaçãos: Industrial RS-232 Control Interface, Point-of-Sale Terminal Interface, Instrumentation Data Acquisition, Data Collection and Monitoring, Networked Serial Port Expansion, Diagnostic and Service Equipment.
Industrial RS-232 Control Interface
The MAX3243MPWREP fits industrial control equipment that requires several incoming status signals and several outbound commands over RS-232. Its three drivers support three command channels, while five receivers can monitor five incoming lines from a controller or instrument. The 3 V to 5.5 V supply range allows operation alongside both 3.3 V and 5 V controller families. Its 250 kbps data-rate capability is suitable for asynchronous supervisory links rather than continuous high-rate data streaming. The integrated dual charge pump removes the need for external bipolar-supply generation, while ±15 kV HBM protection strengthens connections that terminate at an exposed panel connector.
Point-of-Sale Terminal Interface
The MAX3243MPWREP can support a point-of-sale terminal or peripheral that must exchange commands and status over RS-232. Five receiver channels are useful for connecting multiple peripheral outputs to a single controller input bank, while three driver channels handle outbound traffic. The 3 V minimum supply voltage supports compact mixed-voltage logic systems, and the 250 kbps rate is more than sufficient for transactional peripheral commands. The 28-pin TSSOP package helps limit board area, and the dual charge-pump architecture simplifies the power design. Place the required charge-pump capacitors close to their assigned pins and reserve connector protection if the cable can be exposed to severe ESD events.
Instrumentation Data Acquisition
The MAX3243MPWREP is appropriate for laboratory and industrial instrumentation that needs to acquire multiple RS-232 status channels while providing three command outputs. The five-receiver, three-driver arrangement supports asymmetric control-and-feedback architectures commonly found in older test equipment. A 250 kbps maximum data rate supports moderate command and measurement-transfer rates, and the 3 V to 5.5 V operating range simplifies integration with mixed legacy and modern control electronics. Pin-to-pin ±15 kV HBM protection is valuable when the serial connector is externally accessible. Designers should still evaluate ground noise, cable length, and connector grounding to prevent ground-loop errors in precision measurements.
Data Collection and Monitoring
The MAX3243MPWREP can bridge a low-voltage controller to RS-232 data-collection equipment with three transmit and five receive channels. Its 250 kbps rate is suitable for polled logs, configuration exchanges, and periodic monitoring records rather than continuous high-bandwidth transfers. The 28-pin TSSOP package supports compact interface sections, and the integrated dual charge pump reduces external component count. Five receivers make it possible to consolidate several incoming signals around one device. Use shielded or twisted-pair cabling where appropriate, maintain a common reference through the connector ground, and verify the external capacitor network and pin placement against the manufacturer layout guidance before fabrication.
Networked Serial Port Expansion
The MAX3243MPWREP is useful when a system needs to expand limited controller serial interfaces into three RS-232 driver outputs and five receiver inputs. The 3 V to 5.5 V supply range supports a transition from legacy 5 V logic to 3.3 V logic without requiring a 5 V-only transceiver. Its 250 kbps rate is appropriate for configuration links, diagnostics, and control channels associated with network equipment. The integrated charge pump keeps the external supply arrangement simpler, while HBM-rated ±15 kV protection adds margin at an exposed service connector. Confirm connector pin assignments and avoid presenting a terminated RS-232 line as a direct substitute for a differential network interface.
Diagnostic and Service Equipment
The MAX3243MPWREP can serve in diagnostic equipment that interrogates several devices while driving command lines to selected targets. Five receiver inputs allow multiple DUT status signals to be monitored, and three driver outputs support active control or acknowledgment channels. Its maximum data rate of 250 kbps is suitable for setup commands and diagnostic records. The 125 °C maximum operating-temperature listing supports applications where the interface IC is positioned in a thermally demanding enclosure. The 28-pin TSSOP package requires careful lead clearance and signal routing, so follow the manufacturer footprint and decoupling guidance. External protection may be needed when service ports are connected to long cables or unknown field equipment.
Dados de referência de engenharia para MAX3243MPWREP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MAX3243EIPWR | MAX3243EUPWR | MAX3243EAPWR | MAX3243ECPWR | MAX3243EEPWR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin TSSOP | 28-pin TSSOP | 28-pin TSSOP | 28-pin TSSOP | 28-pin TSSOP | 28-pin TSSOP |
Principais diferenciais
- Five receive channels support consolidated monitoring (vs MAX3232EUE+T)
- Maximum operating temperature supports thermally demanding systems (vs MAX3243ECPWR)
- Single 3 V to 5.5 V supply with integrated dual charge pump (vs MAX3237CAI+T)
Notas de projeto
Place the charge-pump capacitors directly beside the pins specified in the manufacturer datasheet and keep the associated current-loop paths short. Connect the device ground and connector ground through a low-impedance plane rather than routing signal returns through narrow traces. The 28-pin TSSOP footprint has approximately 0.65 mm lead pitch, so verify pad dimensions against the current Texas Instruments land pattern before fabrication.
Do not treat an RS-232 receiver input as a logic-level signal, and do not connect differential Ethernet signals to this device. Confirm that the connector mapping uses one driver output per transmitted channel and one receiver input per received channel. The MAX3243MPWREP has three drivers and five receivers, so a design requiring a different channel count needs pin-level review rather than assumption.
Route each RS-232 line away from clocks, switching-node edges, and high-current return paths. RS-232 is a single-ended, unbalanced interface, so cable routing and grounding can materially affect signal integrity even below the stated 250 kbps limit. For exposed connectors, maintain a practical isolation distance from noisy circuits and consider additional surge protection beyond the integrated ±15 kV HBM protection.
Calculate dissipation from the actual supply voltage, output-current state, and quiescent current before using the 125 °C maximum operating-temperature specification as a design target. The retrieved technical information does not provide a complete thermal-resistance table or full load-current specification, so use the manufacturer datasheet for those limits. Provide normal copper area around the TSSOP and avoid placing the package near a local heat source.
Informações de conformidade
The retrieved manufacturer and distributor information does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for this exact orderable part. The MAX3243-EP family designation is recorded, but automotive qualification should not be inferred from the family name alone.