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Product Detailed Parameters
- Description：IC TXRX RS-232 4:5 5V LP 28SSOP
- Mfr：Analog Devices Inc.
- Package：Bulk
- Series：-
- Type：Transceiver
- Protocol：RS232
- Number of Drivers/Receivers：4月5日
- Duplex：-
- Data Rate：-
- Voltage - Supply：4.75V ~ 5.25V
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：28-SSOP
- Receiver Hysteresis：-
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Overview
The ADM241LARS-REEL is a CMOS RS-232 transceiver designed for single 5 V power supply operation. It integrates four drivers and five receivers, featuring internal charge pump voltage converters that generate ±10 V supplies from the 5 V input using only four 1 µF capacitors. The device supports data rates up to 120 kbps and includes low power shutdown and enable functions. It operates within a temperature range of -40°C to +85°C and is housed in a 28-pin SOIC package.
Feature Summary
- Integrates dual charge pumps to generate required RS-232 voltages from a single 5 V source
- Includes low power shutdown mode for battery-powered applications
- Features Schmitt trigger inputs on receivers for noise immunity
- Provides enable control for sharing common communication lines
Applications
- Battery-powered computers and peripherals
- Modems and printers requiring EIA-232-E interfaces
- Instruments with limited power availability
Procurement Notes
Verify the specific suffix 'A' indicates the industrial temperature grade (-40°C to +85°C) as defined by Analog Devices. Confirm the 'RS' designation corresponds to the RoHS-compliant lead-free packaging variant. Ensure the 'REEL' suffix matches the required tape and reel quantity for automated assembly processes.
Selection Notes
Select this component when a high channel count (4 drivers, 5 receivers) is required alongside low power consumption. The integrated charge pumps eliminate the need for external dual polarity supplies. Verify that the 120 kbps data rate meets system requirements and that the 28-pin package fits the available PCB space constraints.
Part Context
This part belongs to the ADM2xxL family of enhanced CMOS RS-232 drivers and receivers. It serves as an upgrade to the older AD2xx series, offering lower power dissipation and faster slew rates. The ADM241L specifically provides the highest channel density within the single-supply subset of this family.
Replacement Considerations
ADM236L offers similar functionality but with fewer receiver channels.
