AD232JR

Overview

The AD232JR is a dual transmitter and receiver RS-232 interface integrated circuit manufactured by Analog Devices. Designed for CMOS technology, this component operates within a single 5V power supply range. It features internal charge pumps to generate the necessary voltages for RS-232 signal levels without requiring external capacitors in some configurations, although standard implementations often utilize small external capacitors. The device supports full-duplex communication with two drivers and two receivers, providing robust data transmission capabilities for serial communication applications.

Feature Summary

• Dual driver and dual receiver configuration for full-duplex RS-232 communication
• CMOS technology optimized for low power consumption at 5V operation
• Integrated charge pump circuitry to generate RS-232 voltage levels
• 15 kV ESD protection on RS-232 lines for enhanced reliability

Applications

• Industrial control systems requiring reliable serial communication
• Point-of-sale (POS) terminals and equipment
• Medical instrumentation with serial data interfaces
• GPS navigation devices and related communication modules
• General-purpose microcontroller-based serial port expansion

Procurement Notes

Verify the exact suffix and package type when sourcing, as Analog Devices utilizes specific coding for temperature ranges and packaging formats. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Check for current lifecycle status, as older RS-232 transceivers may be subject to limited availability or obsolescence notices. Ensure that the selected variant matches the required operating temperature range for the intended application environment.

Selection Notes

Select the AD232JR when a dual-channel RS-232 solution is needed with low power consumption and high ESD immunity. Compare against similar parts like the ADM202 series for pin compatibility and feature sets. Consider the operating temperature range and package options available for the specific suffix. Verify that the data rate requirements of the application are met by the device's specifications. Evaluate board space constraints regarding the required external capacitor count if not using a zero-capacitor variant.

Part Context

The AD232JR belongs to the broader family of RS-232 interface ICs from Analog Devices, which includes various multi-driver and multi-receiver solutions. These components are designed to facilitate serial communication between microprocessors and peripheral devices. The family typically offers options for different voltage supplies, data rates, and integration levels. This specific part represents a standard dual-channel solution suitable for general-purpose serial interfacing tasks in commercial and industrial electronics.

Replacement Considerations

Direct replacements should be sought from the ADM202 or MAX232 families, ensuring pinout compatibility and electrical parameter alignment. Verify that substitute components meet the same ESD protection and data rate requirements. Check for any differences in external component requirements, such as capacitor values or types. Confirm that the alternative part is available in the required package style and temperature grade.