Overview
The ADM232LARZ-REEL is a 5 V powered CMOS RS-232 driver/receiver integrated circuit produced by Analog Devices Inc. This component is part of the ADM232L 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 12 V is not required. The ADM232LARZ-REEL features on-board DC-DC converters that generate the necessary ±10 V output swing from the 5 V supply, making it ideal for battery-powered equipment and space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 5 V |
| Data Rate | Up to 120 kB/s |
| Output Voltage Swing | ±9 V with 5 V supply |
| Input Logic Threshold Low | 0.8 V |
| Input Logic Threshold High | 2.0 V |
| 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 |
| RS-232 Input Resistance | 3 kΩ to 5 kΩ |
| TTL/CMOS Output Voltage Low | 0.4 V |
| TTL/CMOS Output Voltage High | 3.5 V |
| Package | 16-SOIC |
| Operating Temperature Range | 0°C to 85°C |
Key Features
- Single 5 V power supply with on-board DC-DC converters to generate ±10 V output swing.
- Meets all EIA-232-E and V.28 specifications.
- Low power consumption, with shutdown mode available in some models (though not in ADM232LARZ-REEL specifically).
- Internal 400 kΩ pull-up resistors on TTL/CMOS inputs and internal 5 kΩ pull-down resistors on RS-232 inputs.
- Compact 16-SOIC package suitable for space-constrained designs.
- Full duplex operation.
- High data rate of up to 120 kB/s.
Applications
- Computers and peripherals.
- Modems and printers.
- Industrial instruments and control systems.
- Battery-powered equipment where low power consumption is critical.
- Any application requiring RS-232 communication interfaces, especially where a single 5 V supply is available.
Q & A
- What is the primary function of the ADM232LARZ-REEL? The ADM232LARZ-REEL is a 5 V powered CMOS RS-232 driver/receiver integrated circuit designed for RS-232 communication interfaces.
- What is the output voltage swing of the ADM232LARZ-REEL? The output voltage swing is ±9 V, generated from a single 5 V supply using on-board DC-DC converters.
- What is the data rate capability of the ADM232LARZ-REEL? The data rate capability is up to 120 kB/s.
- What type of package does the ADM232LARZ-REEL come in? The ADM232LARZ-REEL comes in a 16-SOIC package.
- Is the ADM232LARZ-REEL suitable for battery-powered devices? Yes, it is suitable due to its low power consumption and ability to operate from a single 5 V supply.
- What are the input voltage thresholds for TTL/CMOS inputs? The input logic thresholds are 0.8 V for low and 2.0 V for high.
- What is the RS-232 input voltage range? The RS-232 input voltage range is –30 V to +30 V.
- Does the ADM232LARZ-REEL have internal pull-up and pull-down resistors? Yes, it has internal 400 kΩ pull-up resistors on TTL/CMOS inputs and internal 5 kΩ pull-down resistors on RS-232 inputs.
- What are the typical operating temperatures for the ADM232LARZ-REEL? The operating temperature range is 0°C to 85°C.
- Is the ADM232LARZ-REEL RoHS compliant? Yes, it is RoHS compliant for environmentally friendly design.
