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Product Detailed Parameters
- Description：IC TRANSCEIVER FULL 4/4 24SOIC
- Mfr：Analog Devices Inc.
- Package：Tube
- Series：-
- Type：Transceiver
- Protocol：RS232
- Number of Drivers/Receivers：4月4日
- Duplex：Full
- Data Rate：120Kbps
- Voltage - Supply：4.75V ~ 5.25V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：24-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：24-SOIC
- Receiver Hysteresis：650 mV
- Grade：-
- Qualification：-
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Overview
The ADM238LARZ is a CMOS RS-232 transceiver from Analog Devices, operating on a single 5 V supply. It integrates four drivers and four receivers within a 24-pin WSOIC package. The device supports data rates up to 120 kbps and generates internal ±10 V supplies using external 1 µF capacitors. It meets EIA-232-E specifications with ±9 V output swings and includes Schmitt trigger inputs for noise immunity.
Feature Summary
- Integrates dual charge pump converters to generate required voltage levels from a single 5 V source
- Features Schmitt trigger receiver inputs to ensure stable signal reception in noisy environments
- Includes internal pull-up and pull-down resistors on input pins to simplify circuit design
Applications
- Computers
- Peripherals
- Modems
- Printers
- Instruments
Procurement Notes
Verify the specific suffix 'L' against official documentation to confirm commercial temperature range and capacitor requirements. Confirm pinout compatibility with target PCB layout before ordering. Ensure external capacitors meet the specified voltage ratings for reliable operation.
Selection Notes
Select this component when four independent transmit and receive channels are required. It is suitable for designs constrained by space due to small capacitor usage. Verify that the system operates within the standard commercial temperature range and utilizes a 5 V logic interface.
Part Context
This part belongs to the ADM2xxL family of low-power RS-232 transceivers. It serves as an enhanced upgrade to the AD2xx series, offering lower power consumption and faster slew rates. The family provides various driver/receiver combinations for diverse communication interface needs.
Replacement Considerations
ADM238JNZ
FAQ
Does the ADM238LARZ include a shutdown mode?
No, the ADM238LARZ does not feature a shutdown pin. Only the ADM236L and ADM241L models in this family include low power shutdown capabilities.
What is the maximum input voltage the receivers can withstand?
The receivers are protected against overvoltages up to ±30 V on the RIN pins.
How many external capacitors are required for operation?
Four external capacitors are required: two for the voltage doubler and two for the voltage inverter.
