AD237AN

Overview

The AD237AN is a monolithic RS-232 transceiver manufactured by Analog Devices Inc. It integrates five drivers and three receivers to support full-duplex communication over standard RS-232 interfaces. The device operates from a single 5 V supply and achieves data rates up to 120 kb/s. It utilizes internal charge pumps to generate the necessary positive and negative voltages for RS-232 signal levels, eliminating the need for external components. The AD237AN is housed in a 24-pin SOIC package and is designed for industrial applications requiring reliable serial data transmission.

Feature Summary

• Integrates five independent drivers and three receivers on a single chip
• Internal charge pump circuitry eliminates requirement for external capacitors
• Supports full-duplex data transmission at speeds up to 120 kb/s
• Operates directly from a single +5 V power supply

Applications

• Industrial control systems requiring robust serial communication links
• Modem interface circuits in telecommunications equipment
• Point-of-sale (POS) terminals and cash registers
• Medical instrumentation with serial data acquisition needs
• Automotive diagnostic tools and embedded controller networks

Procurement Notes

Verify the specific suffix 'AN' against the manufacturer's current datasheet to confirm pinout compatibility and temperature range specifications. Ensure that the selected component meets the required environmental operating conditions for the target application. Cross-reference the package type with PCB footprint designs to guarantee mechanical fit during assembly processes.

Selection Notes

Select the AD237AN when system design requires multiple transmit channels alongside fewer receive lines within a compact form factor. This component is suitable for designs prioritizing reduced bill of materials by leveraging integrated charge pumps. Consider this part for applications where space constraints prohibit external voltage generation circuits while maintaining standard RS-232 electrical compliance.

Part Context

This component belongs to the ADM237L series of RS-232 interface integrated circuits produced by Analog Devices Inc. The series focuses on providing complete transceiver functionality without external passive components. These devices are engineered to meet EIA/TIA-232 standards for serial communication, offering reliability in noisy environments through robust driver output capabilities and receiver sensitivity.

Replacement Considerations

Direct replacements should be sought from the ADM237 family or compatible RS-232 transceivers with identical pin configurations. Verify that substitute parts maintain the same count of drivers and receivers to ensure functional parity. Confirm that alternative components support the same 5 V supply voltage and data rate requirements before implementation.