AD236JN

Overview

The AD236JN is a single-supply CMOS RS-232 driver and receiver designed for EIA-232-E and V.28 interfaces. It operates from a single +5 V power supply, eliminating the need for external negative voltage generators through integrated on-board DC-DC converters. The device supports data rates up to 120 kB/s and provides ±12 V output swings. Key electrical characteristics include low power consumption with a shutdown mode drawing less than 5 µW, high input protection levels, and robust latch-up immunity.

Feature Summary

• Integrated on-board DC-DC converters enable operation from a single +5 V supply without external charge pumps.
• Low power shutdown mode reduces dissipation to under 5 µW, suitable for battery-powered equipment.
• High input protection ratings ensure reliability against electrostatic discharge and transient events.

Applications

• Portable computers and notebook systems requiring compact serial communication interfaces.
• Battery-operated peripherals such as modems and printers where power efficiency is critical.
• Industrial instruments and measurement devices needing reliable RS-232 connectivity in space-constrained designs.

Procurement Notes

Verify the package type matches the required board layout, as the 'JN' suffix typically denotes a specific plastic DIP configuration. Confirm that the manufacturing source is Analog Devices Inc. or an authorized distributor to ensure component authenticity. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the operating temperature range meets the specific environmental conditions of the target application.

Selection Notes

Select this component when a single +5 V supply is available and negative voltages are not present. It serves as a direct pin-compatible upgrade for older MAX223/230-241 and AD230-AD241 families. Consider this part for applications prioritizing low standby power due to its effective shutdown capability. Evaluate the 120 kB/s data rate limit to ensure it suffices for the intended communication speed requirements.

Part Context

The AD236JN belongs to the ADM2xx family of line drivers and receivers manufactured by Analog Devices. This family focuses on providing complete RS-232 solutions in minimal footprint packages. The series is widely recognized for integrating charge pump technology directly onto the silicon die, simplifying circuit design and reducing the number of external passive components required for standard serial port implementations.

Replacement Considerations

The ADM236LJR is a verified equivalent within the same product family, offering identical functionality with a different package option. Designers upgrading from legacy parts can consider the MAX223 or AD230 series as historical predecessors, though pin compatibility should be verified against specific datasheet revisions before substitution.