MAX238ENG

Overview

The MAX238ENG is a dual driver and dual receiver RS-232 transceiver manufactured by Analog Devices Inc. (formerly Maxim Integrated). Designed for EIA/TIA-232-F and V.28/V.24 communications, it operates from a single +5V supply using an internal charge pump to generate ±10V levels. The device features low supply current of 300µA in active mode and 1µA in shutdown. It supports data rates up to 120kbps with typical slew rates of 4V/µs. Packaged in a 16-pin Narrow DIP (0.300 inch), it includes integrated capacitors for space savings.

Feature Summary

• Single-supply operation eliminates the need for external bipolar power sources
• Integrated charge pump circuitry generates required voltage levels internally
• Low power consumption with dedicated shutdown mode for energy efficiency
• Built-in protection against electrostatic discharge on all inputs and outputs

Applications

• Portable battery-powered equipment requiring RS-232 connectivity
• Modems and fax machines utilizing standard serial communication protocols
• Industrial control systems with limited power supply options
• Point-of-sale terminals and handheld diagnostic devices

Procurement Notes

Verify the specific suffix 'ENG' against official Analog Devices documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for 16-pin narrow DIP packages. Check for lead-free compliance if required by local regulations. Confirm availability through authorized distributors as stock levels vary.

Selection Notes

Select this component when designing circuits that require RS-232 communication without access to negative voltage rails. It is suitable for applications prioritizing board space reduction due to integrated capacitors. Consider the 120kbps speed limit when evaluating high-speed data transmission needs. Compare power consumption requirements against other transceivers if battery life is critical.

Part Context

This part belongs to the MAX232 family of multichannel RS-232 drivers and receivers. These components are widely used in legacy serial communication interfaces. The MAX238 variant specifically offers dual drivers and receivers, providing a balance between channel count and power efficiency for moderate complexity serial links.

Replacement Considerations

MAX232CPE: Similar functionality but may differ in capacitor integration or package style. MAX3232EIPW: Higher speed capability and different pinout; requires schematic review. MAX238ACNG+: Direct functional equivalent with potentially improved specifications; verify package dimensions.