ADM211ARS

Overview

The ADM211ARS is a CMOS RS-232 transceiver from the ADM2xx family, designed for EIA-232-E and V.28 interfaces using a single +5V supply. It integrates four drivers and five receivers with on-board DC-to-DC converters generating ±10V. The device supports data rates up to 120 kB/s and features low power shutdown (≤5 μW) and an active-low enable input. It operates within an industrial temperature range of -40°C to +85°C and is housed in a 28-lead SSOP package.

Feature Summary

• Integrates internal charge pump voltage converters to generate required RS-232 levels from a single 5V supply
• Features low power shutdown mode that reduces power dissipation to less than 5 μW
• Includes an active-low enable input to place receiver outputs in a high impedance state
• Provides Schmitt-trigger inputs with hysteresis for noise immunity

Applications

• Battery-powered equipment requiring low standby power
• Microprocessor systems sharing common data lines
• Industrial instruments and modems
• Printers and computer peripherals

Procurement Notes

Verify the specific ordering suffix 'ARS' corresponds to the 28-lead Shrink Small Outline Package (SSOP) and the industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status based on the presence or absence of the 'Z' suffix in the final part number. Ensure the application circuit includes the required external capacitors for the internal charge pumps.

Selection Notes

Select this component when a single 5V supply is available but standard ±12V RS-232 levels are needed. The ADM211 is appropriate for designs requiring five receiver channels and four driver channels. Consider the ADM213 if two receivers must remain active during shutdown for ring indicator monitoring. Verify that the 28-lead SSOP footprint fits the PCB layout constraints.

Part Context

The ADM211 belongs to the ADM2xx family of line drivers/receivers intended for applications where ±12V supplies are unavailable. These parts are CMOS-based to minimize power consumption and are pin-compatible with the MAX206-211/213 series. The ADM211 specifically offers a balance of four drivers and five receivers with full shutdown control capabilities.

Replacement Considerations

The datasheet states the ADM2xx family is pin compatible with the MAX206-211/213 series. Designers should verify electrical specifications against the original MAXIM components to ensure compatibility with existing system requirements.