ADM208ARZ-REEL

Overview

The ADM208ARZ-REEL is a CMOS RS-232 line driver and receiver manufactured by Analog Devices. It operates from a single +5 V power supply and includes two internal charge pump voltage converters to generate the required ±10 V levels for EIA-232-E compliance. The device features four drivers and four receivers, supporting data rates up to 120 kB/s with an output voltage swing of ±9 V under typical loading. It does not include a shutdown mode or enable control inputs. The component is housed in a 24-lead Wide Body SOIC package (Option RW-24) and is rated for operation within the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge pump DC-to-DC voltage converters to generate ±10 V supplies from a single 5 V input.
• Provides full EIA-232-E compliance with TTL/CMOS compatible inputs and outputs.
• Features Schmitt-trigger receivers with hysteresis to ensure noise immunity on slow transition signals.
• Includes internal pull-up resistors on transmitter inputs and pull-down resistors on receiver inputs.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify that the specific ordering suffix matches the required packaging format. The REEL suffix indicates tape and reel packaging, which differs from tube packaging used for other variants. Confirm RoHS compliance status if required by your manufacturing standards. Ensure the selected package option aligns with your PCB footprint design constraints.

Selection Notes

Select this part when a configuration with four drivers and four receivers is required without low-power shutdown functionality. Unlike the ADM206 or ADM211, this model lacks enable and shutdown pins. Verify that the application does not require active receiver monitoring during power-down states, as all receivers are disabled when the device is inactive.

Part Context

This component belongs to the ADM2xx family of RS-232 transceivers designed for single-supply operation. It serves as a direct replacement for legacy AD2xx series devices while offering improved CMOS power efficiency. The ADM208 variant specifically fills the need for symmetric 4x4 driver/receiver configurations in standard serial communication interfaces.

Replacement Considerations

ADM208ANZ

FAQ

Does the ADM208 support a low-power shutdown mode?

No, the ADM208 does not feature a shutdown pin or low-power mode. Only the ADM206, ADM211, and ADM213 models in this family include shutdown capabilities.

What is the maximum data rate supported by this device?

The device supports data transmission rates up to 120 kB/s under worst-case loading conditions while maintaining EIA-232-E signal level requirements.

How are unused transmitter inputs handled?

Unused transmitter inputs have internal 400 kΩ pull-up resistors connected to VCC. This forces the corresponding outputs into a low state if left unconnected.