ADM202JRW

Overview

The ADM202JRW is a dual RS-232 transceiver from Analog Devices, designed for single 5 V operation. It integrates charge pumps to generate ±10 V levels using external 0.1 µF capacitors. The device supports data rates up to 120 kBaud with low power consumption of 2.0 mA typical supply current. It features two drivers and two receivers, meeting EIA-232-E specifications. The J suffix indicates a commercial temperature range of 0 °C to 70 °C. It is housed in a 16-lead Wide SOIC (R-16W) package.

Feature Summary

• Integrates on-chip voltage converters to generate required RS-232 signal levels from a single 5 V supply without external inductors.
• Includes internal pull-up resistors on driver inputs and pull-down resistors on receiver inputs to define logic states when unconnected.
• Provides overvoltage protection on receiver inputs capable of withstanding continuous voltages exceeding ±30 V.
• Features Schmitt trigger inputs on receivers to ensure noise immunity and error-free reception.

Applications

• Computers
• Peripherals
• Modems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm RoHS compliance status as manufacturing processes may evolve. Check for any product change notices regarding pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when a single 5 V digital supply is available and external inductors must be avoided. Ensure the design accommodates the requirement for four external 0.1 µF capacitors for the charge pump. Verify that the 120 kBaud speed meets system requirements and that the wide SOIC footprint fits the PCB layout constraints.

Part Context

This part belongs to the ADM202/ADM203 family of high-speed CMOS RS-232 drivers and receivers. It serves as an interface between TTL/CMOS logic and RS-232 serial ports. The ADM202 requires external capacitors, unlike the integrated ADM203. It is an enhancement of the earlier AD230–AD241 family.

Replacement Considerations

ADM202JRN offers the same electrical specifications in a narrow SOIC package. ADM202JN provides the same functionality in a DIP package. For applications requiring no external capacitors, the ADM203 series is the direct functional alternative.