ADM211ARZ

Overview

The ADM211ARZ is a CMOS RS-232 transceiver from Analog Devices, 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 levels. The device supports data rates up to 120 kB/s and operates within a -40°C to +85°C temperature range. Key electrical parameters include a typical supply current of 13 mA, shutdown current under 10 μA, and an output voltage swing of ±9V. It features low power shutdown mode consuming less than 5 μW and includes active-low enable and active-high shutdown control inputs.

Feature Summary

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

Applications

• Battery-powered equipment requiring low standby power
• Computers and peripheral interface connections
• Modems and printers utilizing standard RS-232 protocols
• Instruments needing reliable serial communication without ±12V supplies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and compliance status. The 'ARZ' designation indicates a RoHS-compliant part in a 28-lead SOIC_W package. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the procurement channel provides valid traceability for industrial components.

Selection Notes

Select the ADM211ARZ when four drivers and five receivers are required for full-duplex communication. Choose this component over the ADM213 if two receivers do not need to remain active during shutdown. Verify that the application requires an active-low enable signal rather than the active-high configuration found in other family members. Ensure the system design accommodates the necessary external capacitors for the charge pump circuitry.

Part Context

The ADM211ARZ belongs to the ADM2xx family of line drivers and receivers manufactured by Analog Devices. This series addresses the need for RS-232 communication in systems lacking dual polarity power supplies. The ADM211 variant specifically offers a balanced configuration of four transmit channels and five receive channels, making it suitable for complex peripheral interfacing tasks compared to simpler three-receiver models.

Replacement Considerations

The ADM211ARZ is pin-compatible with the MAX206-MAX211/MAX213 series. Designers may consider these equivalents if sourcing from different suppliers, provided functional specifications match. Verify that replacement parts maintain the same shutdown and enable logic polarities to ensure compatibility with existing control circuits.