MAX243ESE+T

Overview

The MAX243ESE+T is a dual-channel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-pin SOIC-Wide package. It operates on a single +5V supply and utilizes an integrated charge pump to generate the required ±10V internal voltages for EIA/TIA-232E compliance. The device features two drivers and two receivers with a maximum data rate of 200 kbps. Electrical specifications include a typical VCC supply current of 10 mA under no-load conditions and a transition slew rate ranging from 6 to 30 V/µs. Propagation delays are specified at 3.5 µs for transmitters and 1 µs for receivers.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies or additional capacitors.
• Enables single-supply operation using only a +5V source while generating necessary internal voltage levels.
• Provides full-duplex communication capability through dedicated driver and receiver channels.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 network connections
• Portable diagnostics equipment requiring low component count

Procurement Notes

Verify the specific suffix 'ESE' confirms the SOIC-Wide-16 package and commercial temperature range (0°C to +70°C). Confirm RoHS compliance status as indicated by the '+' designation. Check manufacturer lifecycle status, as this part may be discontinued. Ensure ordering documentation matches the exact alphanumeric sequence to avoid pinout mismatches.

Selection Notes

Select this component when board space is limited due to the absence of external charge-pump capacitors. Choose this variant over the MAX243CWE if the wider SOIC footprint is acceptable. Verify that the 200 kbps data rate meets system requirements. Consider the MAX243CWE+T if a narrower SOIC package is strictly required for the design.

Part Context

This component belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The MAX243 specifically provides two drivers and two receivers. It shares the same core architecture as other members like the MAX232 but differs in package options and specific control pin configurations defined within the broader datasheet.

Replacement Considerations

Public confirmed substitute: MAX243CWE+T. This alternative offers identical electrical performance but utilizes a Narrow SOIC-16 package instead of the Wide SOIC-16 used by the MAX243ESE+T. Verify mechanical clearance before substitution.