ADM208AN

Overview

The ADM208AN is a CMOS RS-232 transceiver designed for EIA-232-E and V.28 interfaces using a single +5 V supply. It integrates four drivers and four receivers with on-board DC-to-DC converters generating ±10 V levels. The device supports data rates up to 120 kB/s and operates within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a typical power supply current of 13 mA, an output voltage swing of ±9 V under load, and receiver input protection up to ±30 V. It requires four external capacitors ranging from 0.1 μF to 10 μF.

Feature Summary

• Integrates dual charge pump voltage converters to generate required RS-232 voltages from a single digital supply.
• Features Schmitt-trigger receivers with hysteresis to ensure error-free reception in noisy environments.
• Includes internal pull-up resistors on transmitter inputs and pull-down resistors on receiver inputs.
• Provides latch-up free performance and robust receiver input protection against overvoltages.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific package option when ordering, as the base model number corresponds to the 24-lead PDIP variant. Confirm RoHS compliance requirements by checking for the Z suffix if lead-free components are mandatory for the assembly process. Ensure the selected package matches the intended PCB footprint and thermal management strategy.

Selection Notes

Select this component when four full-duplex channels are required without shutdown functionality. Unlike the ADM206 or ADM211, this part lacks enable pins, making it suitable for permanently connected interfaces. Verify that the application does not require low-power standby modes, as this device lacks a shutdown control input.

Part Context

This component belongs to the ADM2xx family of line drivers and receivers. It serves as a direct replacement for older AD2xx series parts and maintains pin compatibility with MAX206 through MAX213 derivatives. The family shares common architecture but varies in driver/receiver counts and control features.

Replacement Considerations

The ADM208AN is functionally equivalent to the ADM208ARZ (SOIC package) and ADM208ARSZ (SSOP package). For DIP packages, the ADM208ANZ is the RoHS-compliant alternative. Direct pin-compatible substitutes include the MAX208 series.