ADM222ARZ - 2/2 RS-232 Transceiver 200kbps | Analog Devices
料号： ADM222ARZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.1 | $2,100.00 |
ADM222ARZ 概述
RS-232 transceivers are interface ICs that convert logic-level signals to RS-232 voltage levels for serial communication. They are part of the interface IC family, which also includes RS-485, CAN, and USB transceivers. The ADM222ARZ specifically provides the electrical signaling and protection required for legacy serial ports, enabling communication between microcontrollers and peripherals such as modems, GPS modules, and industrial equipment.
Key features include a 200 kbps data rate, 0.1 µF charge pump capacitors, and a shutdown mode with 0.1 µA supply current. The device is fully compliant with EIA-232E standards and features a wide operating temperature range of -40°C to +85°C. The 18-pin SOIC-W package is suitable for space-constrained designs while providing adequate thermal performance.
Technically, the ADM222ARZ uses a CMOS charge pump architecture to generate ±10 V RS-232 levels from a single 5 V supply. The internal charge pump requires only four external 0.1 µF capacitors, reducing board space and cost compared to older designs requiring larger capacitors. The receiver inputs tolerate up to ±30 V, providing robust protection against voltage spikes on the serial line.
Typical applications include industrial automation, point-of-sale terminals, medical devices, and any system requiring reliable RS-232 communication. The shutdown feature is particularly useful in battery-powered devices where power conservation is critical.
When designing with the ADM222ARZ, ensure that the charge pump capacitors are placed close to the V+ and V- pins to minimize noise and maintain proper voltage generation. The shutdown pin can be driven by a microcontroller GPIO to enter low-power mode when the serial port is idle.
直接替换替代料： ADM222ARZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ADM232AARNZ
✅ 直接替换📋 参考替代料（不在目录中）
ADM232AANZ
✅ 直接替换📋 参考替代料（不在目录中）
ADM202JRNZ
✅ 直接替换📋 参考替代料（不在目录中）
MAX232ACPE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SP232ACN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADM222ARZ 规格参数
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| 数据速率 | 200 kbps |
| 电源电压 | 5 V |
| Charge Pump Capacitors | 0.1 µF |
| Shutdown Supply Current | 0.1 µA |
| 工作温度范围 | -40°C to +85°C |
| 封装 | 18-SOIC W |
| 安装类型 | Surface Mount |
| Receiver Input Voltage Tolerance | ±30 V |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
| AEC-Q100 | Not qualified |
| Lead-Free | Yes |
ADM222ARZ 引脚配置
| 引脚 1 | C1+ — Charge pump capacitor positive terminal |
| 引脚 2 | V+ — Positive charge pump output |
| 引脚 3 | C1- — Charge pump capacitor negative terminal |
| 引脚 4 | C2+ — Charge pump capacitor positive terminal |
| 引脚 5 | C2- — Charge pump capacitor negative terminal |
| 引脚 6 | V- — Negative charge pump output |
| 引脚 7 | T2OUT — Transmitter 2 output |
| 引脚 8 | R2IN — Receiver 2 input |
| 引脚 9 | R2OUT — Receiver 2 output |
| 引脚 10 | T2IN — Transmitter 2 input |
| 引脚 11 | T1IN — Transmitter 1 input |
| 引脚 12 | R1OUT — Receiver 1 output |
| 引脚 13 | R1IN — Receiver 1 input |
| 引脚 14 | T1OUT — Transmitter 1 output |
| 引脚 15 | GND — Ground |
| 引脚 16 | VCC — Power supply (5V) |
| 引脚 17 | SHDN — Shutdown control (active low) |
| 引脚 18 | NC — No connect |
典型应用
ADM222ARZ 适用于 6 应用s: Industrial Automation, Point-of-Sale Terminals, Medical Devices, Networking Equipment, Test and Measurement, Consumer Electronics.
Industrial Automation
The ADM222ARZ provides reliable RS-232 communication in industrial automation systems, such as PLCs and CNC machines. Its 200 kbps data rate and ±30 V receiver input tolerance ensure robust data transfer in noisy environments. The shutdown mode reduces power consumption when the serial port is idle, which is beneficial for energy-efficient factory floors. The wide operating temperature range of -40°C to +85°C allows deployment in harsh industrial settings without additional cooling.
推荐
Point-of-Sale Terminals
In point-of-sale (POS) terminals, the ADM222ARZ enables communication between the main processor and peripherals like barcode scanners, receipt printers, and cash drawers. Its 5 V operation and 0.1 µF charge pump capacitors simplify power supply design, while the shutdown pin helps meet energy efficiency standards. The 18-pin SOIC-W package fits compact POS hardware, and the 200 kbps data rate is sufficient for transaction data transfer.
推荐
Medical Devices
The ADM222ARZ is used in medical devices such as patient monitors and diagnostic equipment for serial communication with computers. Its low shutdown current of 0.1 µA is critical for battery-operated portable medical devices, extending operational life. The device's compliance with EIA-232E standards ensures interoperability with legacy medical systems. The wide temperature range supports reliable operation in clinical environments.
推荐
Networking Equipment
In networking equipment like routers and switches, the ADM222ARZ provides console management ports for configuration and diagnostics. Its 200 kbps data rate is adequate for console commands, and the shutdown mode reduces power when the console is not in use. The 5 V supply is common in networking hardware, and the 18-pin SOIC-W package is suitable for dense PCB layouts. The ±30 V receiver input tolerance protects against voltage spikes on long serial cables.
推荐
Test and Measurement
The ADM222ARZ is employed in test and measurement instruments such as oscilloscopes and multimeters for PC connectivity. Its high-speed 200 kbps data rate enables fast data logging, while the shutdown mode conserves power in battery-operated field instruments. The device's robust ESD protection (as per datasheet) ensures reliability in lab environments. The 18-pin SOIC-W package is easy to integrate into existing designs.
推荐
Consumer Electronics
In consumer electronics like GPS units and digital cameras, the ADM222ARZ enables serial communication with PCs for data transfer and firmware updates. Its low shutdown current of 0.1 µA is ideal for battery-powered devices, and the 5 V operation is compatible with common logic levels. The small 0.1 µF capacitors reduce board space, and the 18-pin SOIC-W package is suitable for compact consumer products.
推荐
推荐产品汇总
工程参考数据： ADM222ARZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADM232AARNZ | ADM232AANZ | ADM202JRNZ | MAX232ACPE | SP232ACN |
|---|---|---|---|---|---|---|
| Package | 18-SOIC W | 16-SOIC | 16-DIP | 16-SOIC | 16-DIP | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | MaxLinear |
| Number of Drivers | 2 | 2 | 2 | 2 | 2 | 2 |
| Number of Receivers | 2 | 2 | 2 | 2 | 2 | 2 |
| Data Rate | 200 kbps | 200 kbps | 200 kbps | 200 kbps | 120 kbps | 120 kbps |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Shutdown Pin | Yes | No | No | No | No | No |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | 0°C to +70°C | 0°C to +70°C |
关键差异点
- Integrated shutdown pin （对比 ADM232AARNZ)
- Higher data rate （对比 MAX232ACPE)
- Wider operating temperature range （对比 SP232ACN)
设计说明
Place the charge pump capacitors (C1, C2) as close as possible to the V+ and V- pins to minimize parasitic inductance and ensure stable voltage generation. Use 0.1 µF ceramic capacitors with low ESR for optimal performance. Keep the traces short and wide to reduce noise.
The ADM222ARZ operates from a single 5 V supply. Ensure the supply is clean and well-decoupled with a 0.1 µF capacitor close to the VCC pin. The shutdown pin can be used to reduce supply current to 0.1 µA when the transceiver is idle, which is beneficial for battery-powered designs.
Do not exceed the receiver input voltage tolerance of ±30 V, as this can damage the device. Also, ensure the shutdown pin is properly driven; leaving it floating may cause unpredictable operation. Refer to the Analog Devices datasheet for the recommended shutdown pin connection.
合规信息
RoHS and REACH compliance based on Analog Devices product documentation. AEC-Q100 not qualified for automotive use.
