Overview
The ADM232LAR-REEL, produced by Analog Devices Inc., is a 5 V-powered CMOS RS-232 driver/receiver integrated circuit. This component is part of the ADM2xx family and is designed to meet all EIA-232-E and V.28 specifications. It is particularly useful in applications where a single 5 V supply is available, and it does not require the traditional ±12 V supplies needed for RS-232 interfaces. The ADM232LAR-REEL is packaged in a 16-lead SOIC (Small Outline Integrated Circuit) and is suitable for a wide range of communication interfaces.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Number of Drivers/Receivers | 2/2 |
| Data Rate | 120 kB/s |
| RS-232 Input Voltage Range | –30 V to +30 V |
| RS-232 Input Threshold Low | 0.8 V to 1.2 V |
| RS-232 Input Threshold High | 1.6 V to 2.4 V |
| RS-232 Input Hysteresis | 0.65 V |
| TTL/CMOS Output Voltage Low | 0.4 V |
| TTL/CMOS Output Voltage High | 3.5 V |
| Operating Temperature | –40°C to 85°C |
| Package | 16-lead SOIC |
| Mounting Type | Surface Mount |
Key Features
- Single 5 V power supply with on-board DC-DC converters to generate the required ±10 V for RS-232 output.
- Meets all EIA-232-E and V.28 specifications.
- Low power shutdown mode available in some models, reducing power dissipation to less than 5 µW.
- No external components required for the ADM233L model, making it ideal for space-critical applications.
- Internal 400 kΩ pull-up resistors on TTL/CMOS inputs and internal 5 kΩ pull-down resistors on RS-232 inputs.
- Latch-up free operation.
Applications
- Computers and peripherals.
- Modems and printers.
- Instruments and industrial equipment.
- Battery-powered devices, benefiting from the low power shutdown mode.
- Any application requiring EIA-232-E and V.28 compliant RS-232 interfaces with a single 5 V supply.
Q & A
- What is the voltage supply range for the ADM232LAR-REEL?
The voltage supply range is 4.5 V to 5.5 V. - How many drivers and receivers does the ADM232LAR-REEL have?
The ADM232LAR-REEL has 2 drivers and 2 receivers. - What is the data rate of the ADM232LAR-REEL?
The data rate is up to 120 kB/s. - What is the RS-232 input voltage range for the ADM232LAR-REEL?
The RS-232 input voltage range is –30 V to +30 V. - Does the ADM232LAR-REEL require external components?
No, the ADM232LAR-REEL does not require external components for operation, although some models in the ADM2xx family may have specific requirements. - What is the operating temperature range of the ADM232LAR-REEL?
The operating temperature range is –40°C to 85°C. - What type of package does the ADM232LAR-REEL come in?
The ADM232LAR-REEL comes in a 16-lead SOIC package. - Is the ADM232LAR-REEL suitable for battery-powered devices?
Yes, especially models with the low power shutdown mode, which reduces power dissipation to less than 5 µW. - Does the ADM232LAR-REEL meet EIA-232-E and V.28 specifications?
Yes, it meets all EIA-232-E and V.28 specifications. - What are some common applications for the ADM232LAR-REEL?
Common applications include computers, peripherals, modems, printers, instruments, and industrial equipment.
