MAX232EN

Overview

The MAX232EN is a dual driver and receiver RS-232 transceiver designed for single-supply operation. It operates within a supply voltage range of 4.5V to 5.5V, with a maximum rating of 6.0V. The device supports a data transmission speed of up to 140 kbit/s under specified load conditions. It features two drivers and two receivers, providing full-duplex communication capabilities. The typical supply current is 10.0 mA at 5.5V. The component is housed in a 16-pin DIP package and functions across an ambient temperature range of -40°C to +85°C.

Feature Summary

• Built-in charge pump generates bipolar output voltages using four external capacitors
• Compatible input levels with standard CMOS and TTL integrated circuits
• Static potential tolerance of not less than 2kV
• Meets EIA/TIA-232E and V.28/V.24 specifications

Applications

• Portable computers
• Battery-powered RS-232 systems
• Interface translation
• Low-power modems
• Terminals

Procurement Notes

Verify the specific manufacturer source when sourcing this part number, as it appears in documentation from HTC Korea rather than original equipment manufacturers like Maxim or Texas Instruments. Confirm RoHS compliance status and tube packaging details directly with the supplier. Ensure the ordering suffix 'N' corresponds to the required DIP-16 package type for your design constraints.

Selection Notes

Select this component for applications requiring a single 5V power supply without needing external negative voltage rails. It is suitable for designs where space is limited compared to older solutions but still requires through-hole mounting. Verify that the 140 kbit/s data rate meets system requirements and that the 10mA supply current fits the power budget.

Part Context

This device belongs to the MAX232 family of line drivers and receivers. It provides a solution for converting between TTL/CMOS logic levels and RS-232 signal levels. The 'EN' suffix indicates the DIP-16 package variant. This family is widely used in legacy serial communication interfaces where robustness and simple external component requirements are prioritized.

Replacement Considerations

MAX232ED (SOP-16)

FAQ

What is the maximum supply voltage for the MAX232EN?

The absolute maximum supply voltage is 6.0V, while the recommended operating range is 4.5V to 5.5V.

How many external capacitors are required for operation?

Four external 1.0µF capacitors are required to support the built-in voltage multiplying generator for the charge pump.

What is the propagation delay time for the receiver?

The signal propagation delay time for the receiver is typically 9.7µs and has a maximum limit of 10.0µs under specified test conditions.