ADM211ARSZ

Overview

The ADM211ARSZ is a CMOS RS-232 transceiver from Analog Devices, operating on a single +5 V supply. It integrates four drivers and five receivers within a 28-pin SSOP package. The device utilizes internal charge pumps to generate ±10 V levels, requiring only four external capacitors ranging from 0.1 μF to 10 μF. It supports data rates up to 120 kB/s with an output voltage swing of ±9 V. Key control features include a low-power shutdown mode consuming less than 5 μW and an active-low enable input for receiver tri-stating.

Feature Summary

• Integrates dual charge pump converters to generate required RS-232 voltages from a single 5 V source
• Features low power shutdown mode suitable for battery-powered applications
• Includes active-low enable pin to place receiver outputs in high impedance state
• Provides Schmitt-trigger inputs with hysteresis for noise immunity

Applications

• Battery-powered equipment requiring minimal power consumption
• Microprocessor systems sharing common data lines
• EIA-232-E and V.28 communication interfaces

Procurement Notes

Verify the specific ordering suffix 'ARSZ' corresponds to the 28-lead Shrink Small Outline Package (RS-28) variant. Confirm that the 'Z' suffix indicates RoHS compliance as defined in the manufacturer's ordering guide. Ensure the component meets the industrial temperature range specifications of -40°C to +85°C before procurement.

Selection Notes

Select this component when a single 5 V supply is available but standard RS-232 voltage levels are required. The ADM211 is appropriate for designs needing four transmit channels and five receive channels. Consider the integrated shutdown and enable functions if system power management or bus sharing is necessary. Verify that the external capacitor count fits the board space constraints.

Part Context

The ADM211 belongs to the ADM2xx family of line drivers and receivers designed for EIA-232-E interfaces. This family allows operation without external ±12 V supplies by integrating DC-to-DC converters. The ADM211 specifically offers a combination of four drivers and five receivers with dedicated shutdown and enable controls, distinguishing it from other members like the ADM206 or ADM213 which have different receiver counts or shutdown behaviors.

Replacement Considerations

The datasheet states the ADM2xx series is pin compatible with MAX206-211/213 devices. Verify electrical parameters against the original design requirements when substituting.