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Product Detailed Parameters
- Description：IC TRANSCEIVER FULL 4/4 24CDIP
- Mfr：Analog Devices Inc.
- Package：Bulk,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：Through Hole
- Package / Case：24-CDIP (0.300", 7.62mm)
- Supplier Device Package：24-CDIP
- Receiver Hysteresis：650 mV
- Grade：-
- Qualification：-
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Overview
The ADM238LAQ is a CMOS RS-232 line transceiver designed for EIA-232-E and V.28 interfaces, operating from a single 5 V supply. It integrates four drivers and four receivers with internal charge pumps generating ±10 V supplies using small 1 µF capacitors. The device provides ±9 V output swing at 120 kbps data rates and features Schmitt trigger inputs with 0.65 V hysteresis for noise immunity. It operates within an industrial temperature range of -40°C to +85°C and is housed in a 24-pin ceramic dual in-line package (CDIP).
Feature Summary
- Integrates four drivers and four receivers on a single chip.
- Operates from a single 5 V power supply without external high voltage sources.
- Includes internal charge pumps requiring only small 1 µF capacitors.
- Features Schmitt trigger receiver inputs for enhanced noise immunity.
Applications
- Computers
- Peripherals
- Modems
- Printers
- Instruments
Procurement Notes
Verify the specific ordering suffix 'LAQ' against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 24-pin CDIP configuration. Confirm that the component meets all necessary environmental and regulatory standards required for the intended deployment environment.
Selection Notes
Select this component when a full duplex RS-232 interface with four channels is required. It is suitable for systems limited to a 5 V supply where traditional ±12 V rails are unavailable. Consider the 24-pin ceramic package for applications requiring robust physical durability or specific mounting constraints compared to plastic alternatives.
Part Context
The ADM238L belongs to the ADM2xxL family of 5 V-powered CMOS RS-232 drivers and receivers. This family serves as an enhanced upgrade to the legacy AD2xx series, offering lower power consumption and faster slew rates. The ADM238L specifically provides a balanced configuration of four drivers and four receivers for comprehensive serial communication needs.
Replacement Considerations
The ADM238L is a plug-in upgrade for the AD238. Verify pinout compatibility and electrical specifications before substituting older AD2xx series components. Ensure that any replacement part supports the required 5 V single-supply operation and meets the same EIA-232-E standards.
