ISO7241MDW - 4-Ch 3/1 150Mbps Digital Isolator | TI
Артикул: ISO7241MDW ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.47 | $1.235,00 |
| 1.000 | $2.19 | $2.190,00 |
ISO7241MDW Обзор
Digital isolators are components that transfer digital signals across an isolation barrier while preventing DC current flow and rejecting common-mode noise. They are essential in systems where safety, noise immunity, or ground potential differences exist between circuit domains. The ISO7241MDW uses a silicon-dioxide (SiO2) isolation barrier, which offers high reliability and long-term stability. It is part of the ISO7240x/ISO7241x/ISO7242x family of quad-channel isolators, which provide various channel configurations and output-enable functions.
Key features of the ISO7241MDW include a low channel-to-channel output skew of 1 ns maximum, low pulse-width distortion (PWD) of 2 ns maximum, and low jitter content of 1 ns typical at 150 Mbps. The device operates over a wide supply voltage range of 3.0 V to 5.5 V on both sides, and it is specified for the industrial temperature range of -40°C to +125°C. The output-enable function allows the outputs to be placed in a high-impedance state, facilitating bus-oriented applications.
The ISO7241MDW is designed for high-speed signal isolation in applications such as industrial fieldbus communication, motor control, power inverters, and isolated SPI/UART interfaces. Its high CMTI ensures reliable operation in noisy environments, and the 2500 Vrms isolation rating meets basic insulation requirements for many industrial standards. The device is RoHS compliant and lead-free, supporting environmentally conscious designs.
When designing with the ISO7241MDW, it is important to provide adequate decoupling capacitors on both supply pins and to ensure proper PCB layout to maintain signal integrity and isolation performance. The device does not require external components for the isolation barrier, simplifying the design. For applications requiring higher isolation or different channel configurations, other members of the ISO724x family can be considered.
Аналоги без доработки для ISO7241MDW — 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 ISO7241MDW (тот же форм-фактор и посадочное место) — отличается по Data Rate, Number of Channels, Package, Isolation Voltage, CMTI.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ISO7241MDWR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISO7241CDW
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISO7241M
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ISO7240MDW
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ADUM1401ARWZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$2.19 / шт.
Открыть даташит →ADuM1401BRWZ
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ISO7241MDW Характеристики
| Number of Channels | 4 (3 forward, 1 reverse) |
| Isolation Voltage | 2500 Vrms |
| Скорость передачи данных | 150 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Channel-to-Channel Output Skew | 1 ns max |
| Pulse-Width Distortion (PWD) | 2 ns max |
| Jitter Content | 1 ns typ at 150 Mbps |
| Supply Voltage (VCC1/VCC2) | 3.0 V to 5.5 V |
| Диапазон рабочих температур | -40°C to +125°C |
| Корпус | SOIC-16 (DW) 7.50 mm width |
| Тип монтажа | Surface Mount |
| Isolation Barrier | Silicon Dioxide (SiO2) |
| Output Enable | Yes |
| Статус RoHS | Compliant |
| Lead-Free | Yes |
Конфигурация выводов ISO7241MDW
| Контакт 1 | VCC1 — Input side supply voltage (3.0V to 5.5V) |
| Контакт 2 | GND1 — Input side ground |
| Контакт 3 | INA — Input channel A (forward) |
| Контакт 4 | INB — Input channel B (forward) |
| Контакт 5 | INC — Input channel C (forward) |
| Контакт 6 | OUTD — Output channel D (reverse) |
| Контакт 7 | EN — Output enable (active high) |
| Контакт 8 | GND1 — Input side ground |
| Контакт 9 | GND2 — Output side ground |
| Контакт 10 | OUTA — Output channel A (forward) |
| Контакт 11 | OUTB — Output channel B (forward) |
| Контакт 12 | OUTC — Output channel C (forward) |
| Контакт 13 | IND — Input channel D (reverse) |
| Контакт 14 | NC — No connect |
| Контакт 15 | GND2 — Output side ground |
| Контакт 16 | VCC2 — Output side supply voltage (3.0V to 5.5V) |
Типичное применение
ISO7241MDW подходит для 6 применениеs: Industrial Fieldbus Communication, Motor Control and Inverter Drives, Isolated SPI/UART Interfaces, Power Supply and Battery Management, Medical Equipment Isolation, Automotive Electronics.
Industrial Fieldbus Communication
The ISO7241MDW is ideal for industrial fieldbus communication such as PROFIBUS, Modbus, and CAN isolation. Its 150 Mbps data rate and 25 kV/µs CMTI ensure reliable data transfer in noisy factory environments. The 3/1 channel configuration supports bidirectional communication with one reverse channel for acknowledgments. The device's 2500 Vrms isolation protects control electronics from ground loops and voltage transients, enhancing system safety and reliability.
Рекомендуется
Motor Control and Inverter Drives
In motor control and inverter drives, the ISO7241MDW provides isolation between the microcontroller and gate driver circuits. Its high CMTI (25 kV/µs) prevents false triggering due to fast switching transients from IGBTs or MOSFETs. The 150 Mbps data rate supports high-frequency PWM signals, while the 3/1 channel configuration allows for three forward control signals and one reverse feedback signal. The wide temperature range (-40°C to +125°C) suits harsh industrial environments.
Рекомендуется
Isolated SPI/UART Interfaces
The ISO7241MDW is well-suited for isolating SPI or UART interfaces between microcontrollers and peripheral devices. Its 150 Mbps data rate easily handles SPI clock speeds up to 50 MHz, and the 3/1 channel configuration matches typical SPI (MOSI, SCLK, CS forward; MISO reverse) or UART (TX forward, RX reverse) signal directions. The low pulse-width distortion (2 ns max) ensures accurate data transmission, and the output enable function allows bus sharing in multi-drop configurations.
Рекомендуется
Power Supply and Battery Management
In power supply and battery management systems, the ISO7241MDW isolates the control circuitry from high-voltage power stages. It can be used to transmit PWM signals for DC-DC converters or to isolate communication between battery monitoring ICs and the main controller. The 2500 Vrms isolation rating provides protection against voltage spikes, and the high CMTI ensures stable operation in the presence of switching noise. The device's low power consumption is beneficial for battery-powered applications.
Рекомендуется
Medical Equipment Isolation
The ISO7241MDW is suitable for medical equipment requiring galvanic isolation for patient safety. Its 2500 Vrms isolation rating meets basic insulation requirements for many medical standards. The device's low jitter and high data rate ensure accurate signal transmission in diagnostic and monitoring equipment. The wide temperature range and high reliability make it suitable for long-term use in medical devices. The SiO2 isolation barrier provides stable performance over time.
Рекомендуется
Automotive Electronics
The ISO7241MDW is designed for automotive applications such as electric vehicle battery management, motor control, and in-vehicle networking. Its -40°C to +125°C temperature range meets automotive requirements, and the 2500 Vrms isolation provides protection against high-voltage transients. The high CMTI (25 kV/µs) ensures reliable operation in the presence of electromagnetic interference from motors and ignition systems. The device is AEC-Q100 qualified, making it suitable for automotive-grade designs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ISO7241MDW — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ISO7241MDWR | ISO7241CDW | ADuM1401ARWZ |
|---|---|---|---|---|
| Package | SOIC-16 (DW) | SOIC-16 (DW) | SOIC-16 (DW) | SOIC-16 (DW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Number of Channels | 4 (3/1) | 4 (3/1) | 4 (3/1) | 4 (3/1) |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 150 Mbps | 150 Mbps | 150 Mbps | 90 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Failsafe Output State | Low | Low | High | Low |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Ключевые отличия
- Higher data rate than many competitors (против ADuM1401ARWZ)
- Low pulse-width distortion (против ADuM1401ARWZ)
- Same-brand drop-in variants (против ISO7241CDW)
Заметки по проектированию
For optimal isolation performance, maintain a minimum creepage distance of 8 mm between the input and output sides on the PCB. Place the isolation barrier under the device and avoid routing copper traces across the barrier. Use a solid ground plane on each side, but do not connect the grounds together except through the isolation barrier. This ensures the 2500 Vrms isolation rating is maintained.
Decouple both VCC1 and VCC2 with 0.1 µF ceramic capacitors placed as close to the pins as possible. Additionally, use a 10 µF bulk capacitor on each supply if the power source is far from the device. This helps maintain stable operation and reduces noise coupling. The device draws minimal quiescent current, but transient currents during switching can cause voltage dips if decoupling is inadequate.
For high-speed signals up to 150 Mbps, keep the trace lengths short and matched between channels to minimize skew. Use controlled impedance traces (e.g., 50 ohms) if the traces are longer than 1 inch. Avoid vias on the signal lines if possible, as they add parasitic capacitance and inductance. The low output skew (1 ns max) of the ISO7241MDW helps maintain timing margins, but PCB layout still plays a critical role.
Информация о соответствии
RoHS compliant per TI product page. AEC-Q100 qualification not specified for this part; check TI for automotive-grade variants.
