Overview
The ADM238LJR, produced by Analog Devices Inc., is a 5 V-powered CMOS RS-232 driver/receiver integrated circuit. This component is part of the ADM2xxL family, designed to meet all EIA-232-E and V.28 specifications. It is particularly useful in applications where a single 5 V power supply is available, and 12 V is not necessary. The ADM238LJR features on-board DC-DC converters that generate the ±9 V output swing required for RS-232 communication from a single 5 V supply.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 4.75 V to 5.25 V |
| Protocol | RS-232 |
| Number of Drivers/Receivers | 4/4 |
| Data Rate | 120 kbps |
| Receiver Hysteresis | 650 mV |
| RS-232 Input Voltage Range | –30 V to +30 V |
| Operating Temperature | 0°C to 70°C |
| Package/Case | 24-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Single 5 V power supply with on-board DC-DC converters generating ±9 V output swing.
- Meets all EIA-232-E and V.28 specifications.
- 120 kbps data rate.
- Low power shutdown mode (less than 5 µW) in some family members.
- Receiver input levels up to ±30 V.
- Low power consumption and latch-up free operation.
- Enable function for receivers to share a common data line or connect to a microprocessor data bus.
Applications
- Computers and peripherals.
- Modems and printers.
- Industrial instruments and equipment.
- Battery-powered systems due to low power shutdown mode.
- Applications where printed circuit board space is critical.
Q & A
- What is the primary function of the ADM238LJR?
The ADM238LJR is a 5 V-powered CMOS RS-232 driver/receiver integrated circuit.
- What are the key specifications of the ADM238LJR?
It includes a single 5 V power supply, 4/4 drivers/receivers, 120 kbps data rate, and ±9 V output swing.
- What protocols does the ADM238LJR support?
The ADM238LJR supports the RS-232 protocol.
- What is the operating temperature range of the ADM238LJR?
The operating temperature range is 0°C to 70°C.
- Is the ADM238LJR suitable for battery-powered systems?
Yes, it is suitable due to its low power shutdown mode.
- What is the package type of the ADM238LJR?
The package type is 24-SOIC (0.295", 7.50mm Width).
- Does the ADM238LJR have an enable function for receivers?
Yes, it features an enable function to allow receivers to share a common data line or connect to a microprocessor data bus.
- What is the maximum data rate of the ADM238LJR?
The maximum data rate is 120 kbps.
- Is the ADM238LJR latch-up free?
Yes, the ADM238LJR is latch-up free.
- What are some common applications of the ADM238LJR?
Common applications include computers, peripherals, modems, printers, and industrial instruments.
