ADM211EARS

Overview

The ADM211EARS is a robust RS-232 and V.28 interface transceiver operating from a single 5 V power supply. It integrates four drivers and five receivers, supporting full-duplex communication at data rates up to 230 kbps. The device features ±15 kV ESD protection on all I/O lines and complies with the EU EMC directive (89/336/EEC). It includes shutdown and enable control pins for power management. Operating within a temperature range of -40°C to +85°C, it requires only four external 0.1 μF capacitors for charge pump operation.

Feature Summary

• Complies with EU EMC directive (89/336/EEC) with low emissions and high immunity
• Provides ±15 kV ESD protection on all I/O lines per IEC 1000-4-2 standards
• Integrates shutdown mode reducing power consumption to 1 μW
• Operates from a single 5 V supply eliminating need for dual voltage rails

Applications

• Laptop computers
• Notebook computers
• Printers
• Peripherals
• Modems

Procurement Notes

Verify the specific package variant required, as the base model supports SSOP, TSSOP, and SOIC packages. Confirm RoHS compliance status for the specific ordering suffix. Ensure the design accounts for the active-high shutdown logic unique to this model compared to similar family members. Check for availability constraints as distribution may vary by region.

Selection Notes

Select the ADM211EARS when five receiver inputs are required alongside four drivers. Choose this part over the ADM213E if simultaneous monitoring of all five receivers during shutdown is not needed. Verify that the 230 kbps maximum data rate meets system requirements. Ensure the 5 V single-supply architecture aligns with the target board design.

Part Context

The ADM211EARS belongs to the ADM2xxE family of ruggedized RS-232 transceivers designed for harsh electrical environments. It serves as a plug-in upgrade for older MAX2xxE designs while offering enhanced EMC performance. The device is backward compatible with earlier ADM2xx products, facilitating easy integration into existing systems requiring robust serial communication interfaces.

Replacement Considerations

ADM213EARSZ is a functional substitute within the same family but disables three receivers during shutdown mode. ADM207E and ADM208E offer different driver/receiver counts and lack shutdown capabilities. Verify pin compatibility and logic polarity differences when substituting.