ADM231LJN

Overview

The ADM231LJN is a CMOS RS-232 transceiver from the ADM2xxL family, designed for EIA-232-E and V.28 interfaces. It features two drivers and two receivers with a 14-pin PDIP package. The device operates from dual supplies: VCC at 5 V ± 10% and V+ ranging from 7.5 V to 13.2 V. It achieves a data rate of 120 kbps with an output voltage swing of ±9 V under typical conditions. Power consumption in shutdown mode is less than 1 µA. The component includes internal pull-up resistors on inputs and Schmitt trigger receivers for noise immunity.

Feature Summary

• Integrates charge pump voltage converter requiring only external capacitors
• Provides high noise immunity through Schmitt trigger receiver inputs
• Supports low power operation via dedicated shutdown control pin
• Includes internal pull-up resistors to simplify unused input handling

Applications

• Computer serial communication ports
• Peripheral interface connections
• Modem signal processing
• Printer port interfacing
• Instrumentation data links

Procurement Notes

Verify the suffix JN corresponds to the specified industrial temperature range and plastic dual in-line package configuration. Confirm RoHS compliance status matches current manufacturing standards. Ensure ordering documentation specifies the correct revision level to guarantee compatibility with existing system designs and supply chain requirements.

Selection Notes

Select this component when a single 5 V digital supply is available alongside a separate positive analog supply between 7.5 V and 13.2 V. It is suitable for applications requiring two independent transmit and receive channels. Consider alternative parts if four drivers are needed or if full integration without external positive supply is required. Verify thermal dissipation limits for the chosen package style.

Part Context

This part belongs to the ADM2xxL enhanced upgrade series, succeeding the AD2xx family. It offers lower power consumption and faster slew rates compared to predecessors. The L designation indicates optimized performance using smaller 1 µF capacitors. The JN suffix identifies the specific commercial temperature grade and leaded packaging variant within the broader product line.

Replacement Considerations

ADM231LN serves as the direct equivalent for the same functional specifications. ADM231ARZ provides identical electrical characteristics but utilizes a surface mount SOIC package instead of through-hole mounting. Verify pinout compatibility and thermal management requirements when substituting package types.