MAX202CUE+ - Dual RS-232 Transceiver, +5V | Analog Devices
Артикул: MAX202CUE+ ✓ АктивенMAX202CUE+ Обзор
An RS-232 transceiver is an interface IC that translates between digital logic levels and single-ended RS-232 voltage levels. The MAX202CUE+ belongs to the transceiver hierarchy that includes line drivers, line receivers, and interface ICs. Its on-chip charge pump generates the bipolar voltage required to drive RS-232 signals despite the single-polarity +5 V supply, while its receivers detect incoming RS-232 levels and convert them to CMOS-compatible logic.
Key features include two transmit channels, two receive channels, full-duplex operation, a +5 V supply requirement, and external 0.1 µF charge-pump capacitors. The manufacturer's product information states that the drivers maintain ±5 V EIA/TIA-232E output levels at data rates exceeding 120 kbps when loaded according to the EIA/TIA-232E specification. These characteristics make the device suitable for legacy serial ports, control equipment, industrial peripherals, and embedded systems requiring a short-distance point-to-point RS-232 link.
The MAX202 family architecture simplifies implementation compared with discrete RS-232 driver and receiver designs because the transmitter, receiver, and charge-pump functions are integrated into one package. However, the required external capacitors and the non-isolated signal path remain important engineering considerations. Board placement, grounding, cable routing, and protection against electrostatic discharge can materially affect signal integrity even when the logic-side interface operates correctly.
Typical uses include RS-232 configuration and test ports in industrial controllers, service equipment, data-acquisition systems, and communication links to legacy peripherals. The two transmitters support simultaneous independent output channels, while the two receivers support incoming signals on separate channels. Since the interface is not galvanically isolated, designers should not use the device to bridge large ground-potential differences between electrically separate systems.
Place the four 0.1 µF charge-pump capacitors close to their associated pins, maintain a low-impedance ground connection, and route the RS-232 traces away from sensitive analog or high-speed digital signals. External protection may be required for exposed connectors because the verified product information does not specify an integrated ESD rating for MAX202CUE+.
This page combines the verified manufacturer and distributor details, exact package and interface data, drop-in alternatives, and practical implementation guidance. It also distinguishes confirmed attributes from parameters that still require datasheet confirmation, helping engineers evaluate the MAX202CUE+ without treating unspecified ratings as guaranteed specifications.
Аналоги без доработки для MAX202CUE+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
MAX202CPWR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX202CUE
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX202CUE+ Характеристики
| Product Type | RS-232 transceiver |
| Transmitter Configuration | 2 transmitters |
| Receiver Configuration | 2 receivers |
| Duplex Mode | Full duplex |
| Напряжение питания | +5 V |
| Maximum Data Rate | In excess of 120 kbps |
| Driver Output Signal Levels | ±5 V |
| Interface Standard | EIA/TIA-232E and V.28 |
| External Charge-Pump Capacitors | 0.1 µF each; four required |
| Корпус | 16-TSSOP |
| Тип монтажа | Surface mount |
Конфигурация выводов MAX202CUE+
| Контакт 1 | R1OUT — Receiver 1 output |
| Контакт 2 | R2OUT — Receiver 2 output |
| Контакт 3 | VCC — +5 V supply input |
| Контакт 4 | C2+ — Charge-pump capacitor C2 positive terminal |
| Контакт 5 | C2- — Charge-pump capacitor C2 negative terminal |
| Контакт 6 | C1+ — Charge-pump capacitor C1 positive terminal |
| Контакт 7 | C1- — Charge-pump capacitor C1 negative terminal |
| Контакт 8 | T1IN — Driver 1 logic input |
| Контакт 9 | T2IN — Driver 2 logic input |
| Контакт 10 | GND — Ground |
| Контакт 11 | T1OUT — Driver 1 RS-232 output |
| Контакт 12 | T2OUT — Driver 2 RS-232 output |
| Контакт 13 | R1IN — Receiver 1 RS-232 input |
| Контакт 14 | R2IN — Receiver 2 RS-232 input |
| Контакт 15 | V+ — Positive charge-pump voltage output |
| Контакт 16 | V- — Negative charge-pump voltage output |
Типичное применение
MAX202CUE+ подходит для 6 применениеs: Industrial Controller Serial Port, Legacy Peripheral Communication, Data Acquisition Equipment, Test and Measurement Interface, Embedded Service Console, Networking Equipment Management Port.
Industrial Controller Serial Port
The MAX202CUE+ fits a +5 V industrial controller that needs a conventional point-to-point RS-232 diagnostic or configuration port. Its two transmitters and two receivers support full-duplex communication, while the verified data rate in excess of 120 kbps provides margin for common serial-control protocols. The 16-TSSOP package also keeps the interface compact. Place the four required 0.1 µF charge-pump capacitors close to the device and route the connector-side traces away from sensitive circuitry. Because the interface is non-isolated and its industrial temperature and ESD ratings were not supplied, engineers must verify those limits before deploying the controller in electrically noisy or harsh environments.
Рекомендуется
Legacy Peripheral Communication
The MAX202CUE+ can connect a modern controller to a legacy peripheral that uses RS-232 rather than a modern differential or USB interface. The +5 V supply requirement is useful for embedded systems that already operate from a 5 V rail, and the integrated dual drivers and receivers reduce the component count compared with a discrete implementation. Its verified full-duplex 2/2 configuration allows separate transmit and receive channels, while operation above 120 kbps supports faster service protocols. Verify connector pin assignments, cable length, ground continuity, and logic levels at both ends. The MAX202CUE+ does not provide galvanic isolation, so an appropriate isolation method is required when the two systems may have significant ground-potential differences.
Рекомендуется
Data Acquisition Equipment
The MAX202CUE+ is appropriate for laboratory or field data-acquisition equipment that exposes an RS-232 command port alongside measurement circuitry. The integrated dual transmitter and receiver channels provide two full-duplex paths, and the verified ±5 V driver levels comply with the cited EIA/TIA-232E interface requirements when loaded appropriately. Keeping the transceiver on a separate logic area can help isolate the digital interface from sensitive measurement paths, although the device itself provides no galvanic isolation. Place the four 0.1 µF charge-pump capacitors near their pins, use a continuous ground reference, and confirm that the selected cable and connector do not introduce excessive capacitance. Verify the actual operating temperature and ESD requirements before laboratory or field deployment.
Рекомендуется
Test and Measurement Interface
The MAX202CUE+ can serve as the RS-232 interface in test equipment, programmable instruments, and service fixtures. Its verified throughput in excess of 120 kbps is adequate for many command protocols, and the two-driver/two-receiver arrangement can support bidirectional control or multi-channel arrangements. Using a +5 V-only interface simplifies the power design compared with a system requiring external ±12 V rails, although the external charge-pump capacitors remain mandatory. For instrument use, keep RS-232 routing separate from analog inputs and high-impedance measurement nodes, provide a stable ground plane, and validate cable-driven ringing and reflections at the selected baud rate. External ESD protection should be evaluated for user-accessible connectors because an integrated protection rating was not verified.
Рекомендуется
Embedded Service Console
The MAX202CUE+ supports an embedded service console when technicians connect a maintenance computer through an RS-232 port. The single +5 V supply requirement aligns with many embedded control boards, and the compact 16-TSSOP package limits board-area impact. Two full-duplex channels can support command and response traffic or separate service functions, subject to the host protocol. The design should include a defined connector pinout, ground reference, and cable-length limits because RS-232 is intended for point-to-point communication rather than long multipoint networks. Engineers should also review the unverified ESD and temperature specifications and add appropriately characterized protection if the service connector is accessible in industrial or automotive maintenance environments.
Рекомендуется
Networking Equipment Management Port
The MAX202CUE+ can implement an RS-232 management or console port on networking and communications equipment that lacks USB or Ethernet management. The verified two transmit and two receive channels support full-duplex console operation, and the 120 kbps-class capability is suitable for many text-oriented management interfaces. Its +5 V operation permits integration with a conventional 5 V logic rail, but the charge-pump capacitors must be placed with short, symmetrical routes to minimize switching noise and unstable charge-pump behavior. Keep the interface away from high-current switching nodes and maintain a low-impedance ground connection. Since the MAX202CUE+ lacks verified galvanic isolation, field-connected management ports may require isolation or surge-protection components based on the final installation environment.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX202CUE+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX202CPWR | MAX202CUE |
|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Product Type | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver |
| Supply Voltage | +5 V | +5 V | +5 V |
| Driver Configuration | 2/2 | 2/2 | 2/2 |
| Duplex Mode | Full duplex | Full duplex | Full duplex |
| Data Rate | In excess of 120 kbps | 120 kb/s class | 120 kb/s class |
| External Capacitors | Four 0.1 µF charge-pump capacitors | 0.1 µF external capacitors | 0.1 µF external capacitors |
| Interface Standard | EIA/TIA-232E and V.28 | EIA/TIA-232E and V.28 | EIA/TIA-232E and V.28 |
Ключевые отличия
- Verified single-supply external-capacitor implementation (против MAX202IPW)
- Compact 16-TSSOP implementation with full-duplex capability (против MAX202CPWR)
- Verified compatibility with EIA/TIA-232E and V.28 interfaces (против MAX202CUE)
Заметки по проектированию
Place the four required 0.1 µF charge-pump capacitors as close as practical to their associated MAX202CUE+ pins. Keep their return paths short and avoid routing the charge-pump nodes beneath or parallel to sensitive analog inputs. The verified data establishes the 0.1 µF value but does not establish dielectric or voltage-rating requirements, so those must be checked against the current manufacturer datasheet before component selection.
Separate logic-side and connector-side routing on the PCB. Keep RS-232 driver outputs and receiver inputs away from clocks, ADC inputs, and switching-power nodes, and provide a continuous ground reference between the transceiver and the connected equipment. Because the MAX202CUE+ is non-isolated, do not use it to connect equipment with unrelated or shifting ground potentials; assess isolation or a ground-referenced interface strategy instead.
Do not treat every 16-pin RS-232 device as pin compatible. The verified comparison for MAX202IPW states that its charge-pump capacitor connections differ from MAX202CUE+, so it requires a PCB change. Before substituting any part, compare power pins, ground, every transmitter and receiver signal, and all four charge-pump capacitor connections against the current manufacturer pin table. Also verify the operating-temperature grade and ESD requirements.
Информация о соответствии
The supplied verified snippets do not explicitly establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this general-purpose interface IC based on the supplied data.
