ADM2209EARU-REEL

Overview

The ADM2209EARU-REEL is a dual-port RS-232 transceiver in a 38-lead TSSOP package. It integrates six drivers and ten receivers, operating from a single +12 V supply via an onboard charge pump that eliminates the need for a negative voltage rail. The device supports data rates up to 460 kbps under standard loads and up to 920 kbps with reduced capacitance. It features a dedicated standby supply pin (V_STBY) allowing one receiver per port to remain active for system wake-up while other sections are powered down. ESD protection exceeds -15 kV on I/O pins.

Feature Summary

• Integrates two complete serial ports with onboard DC-to-DC conversion for single-supply operation
• Provides high electrostatic discharge and electrical fast transient immunity on all interface lines
• Includes a low-power standby mode with selective receiver activation for remote wake-up capabilities
• Features fail-safe receiver outputs that default to a logic high state during open-circuit conditions

Applications

• Desktop and portable personal computers requiring dual serial interfaces
• Industrial peripherals and modems operating in electrically noisy environments
• Equipment requiring compliance with strict electromagnetic compatibility directives

Procurement Notes

Verify the specific suffix against the manufacturer's current ordering guide to confirm package type and temperature range. Ensure the reel packaging matches the required quantity for the production line. Confirm that the component meets the necessary environmental certifications for the target market before finalizing the purchase order.

Selection Notes

Select this component when a single-chip solution for two RS-232 ports is required without external negative voltage supplies. It is suitable for applications needing high ESD tolerance and EMC compliance. Consider the standby feature if system power management requires peripheral monitoring during low-power states. Verify that the 38-lead TSSOP package fits the available PCB footprint constraints.

Part Context

This part belongs to the ADM2209 family of rugged dual-port RS-232 transceivers manufactured by Analog Devices. The family is designed to replace traditional multi-component solutions by integrating charge pumps and protection circuits onto a single die. It serves as a direct replacement for legacy dual-port interface chips in computer and industrial control systems.

Replacement Considerations

Check pinout compatibility with existing designs. Verify that the new component supports the required data rates and load capacitances. Ensure the standby voltage requirements match the system's power rails.