ADM234LAR-REEL

Overview

The ADM234LAR-REEL is a single 5 V-powered CMOS RS-232 transceiver from the ADM2xxL family, featuring four drivers and no receivers. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 120 kbps. The device generates internal ±9 V output swings using external 1 µF capacitors. Key electrical parameters include a typical power supply current of 6 mA at no load, a transition region slew rate of 8 V/µs, and receiver input protection up to ±30 V. It lacks low-power shutdown or enable functions.

Feature Summary

• Integrates on-board DC-to-DC converters for single-supply operation
• Provides high noise immunity with Schmitt trigger inputs
• Includes internal pull-up resistors on transmitter inputs
• Features latch-up free construction

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Confirm that the REEL packaging designation matches the required quantity format for your assembly process. Ensure compatibility with existing PCB footprints before procurement.

Selection Notes

Select this component when an interface requires multiple transmission channels without receiving capabilities. It is suitable for designs constrained to a single 5 V supply where space-saving charge pumps are preferred over dual supplies. Verify that the absence of receiver outputs aligns with the system architecture requirements.

Part Context

This part belongs to the ADM2xxL enhanced upgrade series, offering lower power consumption and faster slew rates compared to the legacy AD2xx family. The ADM234L variant specifically addresses applications needing four independent drivers for complex peripheral interfacing while maintaining standard EIA-232-E compliance.

Replacement Considerations

ADM234ARZ