Overview
The ADM238LJRZ is a 4/4 transceiver from Analog Devices Inc., designed for RS-232 communications interfaces. It operates from a single 5 V power supply and is part of the ADM2xx family, which is known for its compliance with EIA-232-E and V.28 specifications. This device is particularly useful in applications where 12 V is not available, making it suitable for a wide range of communication needs.
Key Specifications
| Parameter | Value |
|---|---|
| Power Supply | Single 5 V |
| Data Rate | Up to 120 kbps |
| RS-232 Output Swing | ±9 V with 5 V supply |
| RS-232 Input Voltage Range | –30 V to +30 V |
| Input Logic Threshold Low | 0.8 V |
| Input Logic Threshold High | 2.0 V |
| TTL/CMOS Output Voltage Low | 0.4 V |
| TTL/CMOS Output Voltage High | 3.5 V |
| Shutdown Supply Current | < 5 µW (ADM236L and ADM241L) |
| Package Type | 24-SOIC |
Key Features
- Meets all EIA-232-E and V.28 specifications
- Single 5 V power supply with on-board dc-to-dc converters for ±9 V output swing
- Low power shutdown mode (less than 5 µW) in some models (ADM236L and ADM241L)
- No external components required for the ADM233L model
- Latch-up free and high impedance state when receivers are disabled
- CMOS technology for low power dissipation
Applications
- Computers and peripherals
- Modems
- Printers
- Instruments
- Battery-powered equipment due to low power shutdown mode
Q & A
- What is the power supply requirement for the ADM238LJRZ?
The ADM238LJRZ operates from a single 5 V power supply. - What is the maximum data rate supported by the ADM238LJRZ?
The ADM238LJRZ supports data rates up to 120 kbps. - What is the RS-232 output voltage swing of the ADM238LJRZ?
The RS-232 output voltage swing is ±9 V with a 5 V supply. - What is the input voltage range for the RS-232 inputs?
The input voltage range for the RS-232 inputs is –30 V to +30 V. - Does the ADM238LJRZ require external components?
No, the ADM238LJRZ does not require external components for operation, although some models in the ADM2xx family may have specific requirements. - What is the shutdown supply current for some models in the ADM2xx family?
The shutdown supply current for models like ADM236L and ADM241L is less than 5 µW. - In what package type is the ADM238LJRZ available?
The ADM238LJRZ is available in a 24-SOIC package. - Is the ADM238LJRZ suitable for battery-powered devices?
Yes, the ADM238LJRZ, especially with models featuring low power shutdown, is suitable for battery-powered devices. - What are the typical applications of the ADM238LJRZ?
The typical applications include computers, peripherals, modems, printers, and instruments. - Does the ADM238LJRZ meet EIA-232-E and V.28 specifications?
Yes, the ADM238LJRZ meets all EIA-232-E and V.28 specifications.
