ADM236LJRZ

Overview

The ADM236LJRZ is a single-supply CMOS RS-232 transceiver manufactured by Analog Devices Inc. It operates from a single +5 V power supply and integrates on-board DC-to-DC converters to generate the required ±10 V internal supplies. The device features four drivers and three receivers, supporting data rates up to 120 kbps while meeting EIA-232-E and V.28 specifications. It includes low power shutdown and enable functions for system control. The component is housed in a 24-pin SOIC package.

Feature Summary

• Integrates dual charge pump voltage converters to generate internal positive and negative supply rails from a single digital logic voltage source.
• Features a low power shutdown mode that disables the charge pumps and output stages to minimize energy consumption.
• Includes an active-low enable input to place receiver outputs into a high impedance state for bus sharing applications.

Applications

• Battery-powered equipment requiring extended operational life
• Computers and peripheral interface connections
• Modems and printers utilizing standard serial communication protocols

Procurement Notes

Verify the specific suffix 'ZR' against the manufacturer's current ordering guide to confirm lead-free status and RoHS compliance. Ensure the package type matches the required PCB footprint dimensions. Confirm the temperature grade corresponds to the intended operating environment before finalizing procurement orders.

Selection Notes

Select this component when a design requires multiple transmitter and receiver channels within a single integrated circuit. It is suitable for systems where generating separate positive and negative voltages is impractical. Verify that the external capacitor values meet the minimum requirements for stable charge pump operation under the expected load conditions.

Part Context

This part belongs to the ADM2xxL family of line drivers and receivers designed for EIA-232-E communications interfaces. It serves as an enhanced upgrade to the legacy AD2xx series, offering lower power consumption and faster slew rates. The family allows designers to implement serial interfaces without requiring external high-voltage generation components.

Replacement Considerations

The ADM236L is a direct pin-compatible replacement for the AD236. Designers should verify that the replacement part meets the same electrical specifications regarding output swing and data rate capabilities for the target application.