ADM238LJR-REEL

Overview

The ADM238LJR-REEL is a CMOS RS-232 transceiver from Analog Devices, operating on a single 5 V supply. It integrates four drivers and four receivers for full-duplex communication at data rates up to 120 kbps. Internal charge pumps generate ±10 V supplies using external 1 µF capacitors. The device operates within a voltage range of 4.5 V to 5.5 V with a typical quiescent current of 13 mA. It lacks shutdown or enable control pins and does not include integrated ESD protection. The component is housed in a 24-pin SOIC package.

Feature Summary

• Integrates dual internal dc-to-dc converters to generate required RS-232 voltage levels from a single 5 V source
• Provides four independent transmitter channels and four receiver channels for simultaneous bidirectional data transfer
• Features Schmitt trigger inputs on receivers to ensure noise immunity and error-free reception during slow signal transitions

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the packaging format. The suffix indicates whether the component is supplied in tape-and-reel quantities or tubes. Ensure the selected variant matches the intended assembly process requirements before finalizing procurement orders.

Selection Notes

Select this component when a quad-channel RS-232 interface is required without the need for low-power shutdown functionality. Verify that the application environment remains within the specified commercial temperature limits. Confirm that the system design can accommodate the necessary external 1 µF capacitors for the internal charge pump operation.

Part Context

This part belongs to the ADM2xxL family of enhanced line drivers and receivers. It serves as an upgrade to the legacy AD2xx series, offering lower power consumption and faster slew rates. The ADM238L specifically provides a symmetric configuration of four drivers and four receivers, distinguishing it from other family members with different channel counts.

Replacement Considerations

ADM238LJRZ