ADM241LJRS

Overview

The ADM241LJRS is a CMOS RS-232 transceiver from the ADM2xxL family, designed for EIA-232-E and V.28 interfaces using a single 5 V supply. It integrates four drivers and five receivers with internal charge pumps generating ±10 V levels. The device supports data rates up to 120 kbps and features low power shutdown mode consuming less than 5 µW. It includes enable and shutdown control inputs, Schmitt trigger receivers with 0.65 V hysteresis, and operates within the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual charge pump converters to generate required voltage levels from a single 5 V source
• Features low power shutdown mode reducing dissipation below 5 µW for battery applications
• Includes receiver enable input allowing high impedance state for bus sharing
• Provides Schmitt trigger inputs with hysteresis for noise immunity

Applications

• Battery-powered equipment requiring minimal power consumption
• Microprocessor systems utilizing shared data lines
• Industrial instruments operating in noisy environments

Procurement Notes

Verify the J suffix indicates the commercial temperature range (0°C to 70°C) rather than the A suffix industrial range (-40°C to +85°C). Confirm package type matches design requirements as the datasheet lists SOIC and SSOP options for this family. Ensure ordering specifications align with the specific revision C documentation provided by Analog Devices.

Selection Notes

Select the ADM241LJRS when four drivers and five receivers are required on a single chip. Consider the low power shutdown feature for energy-constrained designs. Verify that the 120 kbps data rate meets system requirements. Compare against the ADM236L if fewer receivers are sufficient, noting the pin count difference.

Part Context

The ADM241L belongs to the ADM2xxL enhanced upgrade series, succeeding the AD2xx family. It offers lower power consumption and faster slew rates compared to predecessors. This family solves interface problems by eliminating the need for dual polarity supplies, integrating all necessary circuitry onto one CMOS chip.

Replacement Considerations

The ADM236L serves as a functional substitute with three receivers instead of five. Both devices share similar electrical characteristics and pinout compatibility regarding control signals. Verify receiver count requirements before substitution.