MAX202IN - 120kbps Dual RS-232 Transceiver | Texas Instruments
Артикул: MAX202IN ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
MAX202IN Обзор
An RS-232 transceiver is the interface between a modern controller’s logic-level UART signals and the higher-voltage, ground-referenced RS-232 bus. A line driver converts outgoing logic levels into RS-232 levels, while a line receiver converts incoming bus levels into logic-compatible signals. In the signal-chain hierarchy, the MAX202IN belongs to the interface-IC class and specifically implements an RS-232 line interface for asynchronous serial communication.
The verified device data identifies a 5 V supply, 120 kbit/s operation, ±9 V output capability, and ±15 kV ESD protection. These specifications suit equipment that needs bidirectional RS-232 conversion, including PC serial adapters, industrial control links, instrumentation, and legacy peripheral connections. The integrated charge pump generates the bipolar voltage required by RS-232 drivers, reducing the external support circuit compared with discrete implementations.
The device uses a dual charge-pump circuit with four small external capacitors. These capacitors must be selected and placed according to the manufacturer datasheet, with short, symmetric routing helping preserve signal and charge-pump performance. The serial-port pins are the primary ESD-sensitive interface, so external protection may still be considered when cables are long, exposed, or routed through industrial environments.
Typical applications include multi-drop or point-to-point serial links, service-console equipment, test systems, and embedded controller interfaces that retain an RS-232 physical layer. Because the MAX202IN is designed for 5 V operation, verify the host supply, logic levels, connector wiring, and ground strategy before placing it in a modern 3.3 V design. Do not infer 3.3 V compatibility from the RS-232 signal levels alone.
For reliable PCB integration, use the manufacturer’s specified capacitor values, keep the charge-pump loop compact, route driver outputs and receiver inputs away from sensitive analog nodes, and provide a low-impedance ground return. Verify receive thresholds and bus termination against the system cable length and topology. This product page combines the verified manufacturer data, package requirements that remain subject to datasheet confirmation, and application guidance for engineers evaluating a legacy serial interface.
Аналоги без доработки для MAX202IN — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MAX202IN (тот же форм-фактор и посадочное место) — отличается по Product Type, Supply Voltage, ESD Protection, Interface Standard, Mounting Type.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MAX202
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX202E
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX202IN
✅ Прямая замена✓ В наличии
Уточнить цену
Открыть даташит →MAX211
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX213
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX202IN Характеристики
| Product Type | Dual RS-232 line driver/receiver |
| Напряжение питания | 5 V |
| Скорость передачи данных | 120 kbit/s |
| Number of Driver Channels | 2 |
| Number of Receiver Channels | 2 |
| RS-232 Output Level | ±9 V |
| ESD Protection | ±15 kV human-body model |
| Charge-Pump Capacitors | External 0.1 µF capacitors |
| Interface Standard | TIA/EIA-232-F and ITU V.28 |
| External Components | Four small external charge-pump capacitors |
| Supply Operation | 5 V VCC |
| ESD Scope | RS-232 bus pins, including GND |
| Line Driver Output | ±9 V |
| Communication Mode | Asynchronous serial communication |
| Host Interface | Asynchronous communication controller |
Руководство по цоколевке MAX202IN в корпусе standard
Цоколевка для MAX202IN (корпус standard). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для MAX202IN.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MAX202IN подходит для 6 применениеs: Legacy PC Serial Interfaces, Industrial Control Links, Test and Measurement Equipment, Embedded Controller Serial Ports, Service and Diagnostic Consoles, Instrumentation and Data Acquisition.
Legacy PC Serial Interfaces
The MAX202IN fits a 5 V UART-to-RS-232 interface used by legacy computers, service equipment, and configuration ports. Its two transmitters and two receivers support a full duplex serial link without requiring separate level-conversion ICs. At up to 120 kbit/s, it is appropriate for conventional UART traffic rather than high-speed differential protocols. The key design check is the host voltage: the verified device is specified for 5 V VCC, while RS-232 line levels are separate bipolar signals. Place the four 0.1 µF charge-pump capacitors close to their assigned pins and route the serial traces away from sensitive analog circuitry.
Рекомендуется
Industrial Control Links
The MAX202IN is useful in industrial equipment that retains an RS-232 service or controller interface. Its ±15 kV human-body-model protection is a verified feature for the RS-232 bus pins, making it more suitable than an unprotected logic-level driver for exposed cable connections. The interface remains limited to the verified 5 V supply and 120 kbit/s operating class. Engineers should provide a low-impedance ground path, maintain cable routing practices, and consider additional protection for industrial surge environments. The charge-pump capacitor layout is especially important because it is part of the device’s internal voltage conversion and noise behavior.
Рекомендуется
Test and Measurement Equipment
The MAX202IN can provide a legacy RS-232 connection for programmable instruments, bench accessories, and service diagnostics. Its 120 kbit/s rate is suitable for command and response traffic generated by many measurement devices. The integrated dual charge pump reduces the number of external support components compared with a discrete RS-232 implementation, although the four external capacitors remain mandatory. Verify ground continuity between the instrument and controller, use shielded cable where appropriate, and keep the connector-side protection path short. Exact pin assignments and package details must be taken from the TI datasheet for the production design.
Рекомендуется
Embedded Controller Serial Ports
An embedded controller with a 5 V UART can use the MAX202IN to connect to an RS-232 peripheral. The device converts controller logic levels into bipolar RS-232 driver outputs and converts received bus levels back into logic-compatible inputs. Because the verified specification is for 5 V VCC, a 3.3 V controller requires a separate level-shifting strategy or a different transceiver family. The two-channel structure allows simultaneous transmit and receive paths, while the 120 kbit/s limit should be checked against the controller’s baud-rate and timing requirements. Maintain short, controlled traces and account for ESD protection at the connector entry.
Рекомендуется
Service and Diagnostic Consoles
The MAX202IN is appropriate for service-console boards that connect a controller or test fixture to an RS-232 service port. Its dual driver and dual receiver arrangement supports two RS-232 channels, and the verified ±15 kV HBM protection helps protect bus pins during cable insertion or user-contact events. The device does not remove the need for correct connector pin assignment, cable shielding, or system grounding. Designers should confirm the exact MAX202IN package and pinout in the TI datasheet because the supplied search results do not provide a complete package drawing. Production purchasing should also confirm lifecycle status and authorized-distributor availability.
Рекомендуется
Instrumentation and Data Acquisition
The MAX202IN can bridge a 5 V control board to legacy RS-232 instrumentation when the required throughput is below 120 kbit/s. The device’s integrated charge-pump supply supports the bipolar levels required by RS-232 drivers, while its separate receiver paths allow the instrument to return status and measurement data. Place the interface near the connector or protected entry point, use a continuous ground reference, and separate the transmit and receive routing from precision analog inputs. The verified data does not specify receiver thresholds, input capacitance, or package details, so those parameters must be confirmed from the manufacturer datasheet before release.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX202IN — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX202 | MAX202E | MAX211 | MAX213 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
Ключевые отличия
- Integrated dual charge-pump RS-232 conversion (против Discrete RS-232 driver implementations)
- Verified ESD capability on RS-232 bus pins (против Logic-level UART without bus-side ESD protection)
- Dual full-duplex channel count (против Single-channel RS-232 transceivers)
- Established MAX202 family targeting (против Newer higher-speed MAX3232E)
Заметки по проектированию
Place the four specified 0.1 µF charge-pump capacitors close to the associated MAX202IN pins and follow the TI datasheet layout exactly. Keep the charge-pump loops short and avoid routing them beneath or beside precision analog and clock nets. Because the interface converts logic levels into bipolar RS-232 signals, connector-side return current should follow a controlled ground path rather than sharing high-current switching return paths. Confirm the package-specific pin names before PCB release.
Do not treat the 5 V supply rating as permission to connect a 3.3 V UART directly. RS-232 line levels are bipolar, but the controller-side logic and supply requirements remain device-specific. Verify input thresholds, output logic levels, enable or shutdown behavior, and package pinout against the manufacturer datasheet. For long or exposed cables, assess whether the verified ±15 kV human-body-model protection is sufficient or whether additional system-level ESD or surge protection is required.
Keep driver outputs and receiver inputs physically separated from sensitive analog nodes and route the RS-232 connector-side nets away from clocks, switching regulators, and high-current power paths. Use a continuous ground reference between the equipment and connected RS-232 device; a floating or poorly referenced ground can degrade receiver operation even when the data rate is below the specified 120 kbit/s. Validate the completed design with the intended cable length and grounding arrangement.
Информация о соответствии
The supplied verified data identifies TIA/EIA-232-F and ITU V.28 interface requirements, but does not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Confirm current compliance documents with Texas Instruments.
