MAX232EIN

Overview

The MAX232EIN is a dual EIA-232 driver and receiver manufactured by Texas Instruments. It operates from a single 5 V supply, utilizing internal charge pumps to generate the necessary positive and negative voltages for RS-232 signaling without external transformers. The device supports data rates up to 120 kb/s and features full-duplex communication with two drivers and two receivers. It is housed in a 16-pin PDIP package and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external transformers or multiple power supplies.
• Provides robust ESD protection on RS-232 lines exceeding ±15 kV according to human body model standards.
• Designed for reliable full-duplex serial communication between microprocessors and standard RS-232 ports.

Applications

• Serial port interfacing for industrial control systems
• Modem connection circuits in embedded devices
• Data acquisition systems requiring RS-232 connectivity

Procurement Notes

Verify the specific suffix 'EIN' against the manufacturer's current datasheet to confirm the PDIP-16 package and industrial temperature grade. Confirm RoHS compliance status as manufacturing processes evolve. Check for end-of-life notices or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this component when a single 5 V supply is available and through-hole mounting is required. Ensure the application does not exceed the 120 kb/s data rate limit. Verify that the load capacitance requirements are met within the specified electrical characteristics for signal integrity.

Part Context

This part belongs to the MAX232 family of RS-232 transceivers. The 'E' suffix typically denotes an extended temperature range variant compared to commercial versions. The 'I' indicates the industrial temperature rating, while 'N' specifies the plastic DIP package style.

Replacement Considerations

Direct pin-compatible alternatives include the MAX232ACPE or MAX232IDR. Verify voltage levels and package dimensions before substitution. Cross-reference with SN75176 or similar RS-232 transceivers if interface compatibility allows.