MAX232EMLP

Overview

The MAX232EMLP is a dual driver and receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 5 V supply with a voltage range of 4.5 V to 5.5 V. The device supports full-duplex communication at data rates up to 120 kbps. It features a 500 mV receiver hysteresis for noise immunity. The component is housed in a 20-LCC surface-mount package measuring 8.9x8.9 mm. It functions within an operating temperature range of -55°C to +125°C.

Feature Summary

• Provides dual independent drivers and receivers for full-duplex RS-232 communication
• Operates from a single 5 V power supply without requiring external negative voltages
• Includes 500 mV receiver hysteresis to improve noise margin and signal integrity

Applications

• Serial communication interfaces between microcontrollers and PC ports
• Industrial control systems requiring robust RS-232 connectivity
• Embedded devices needing reliable short-distance serial data transmission

Procurement Notes

Verify the specific suffix EMLP corresponds to the 20-LCC package variant, as standard MAX232 parts often use different packaging. Confirm current availability status, as this component may be obsolete or subject to limited supply constraints. Ensure compatibility with existing PCB footprints designed for the 8.9x8.9 mm LCC form factor during replacement planning.

Selection Notes

Select this part when a surface-mount solution is required for RS-232 interfacing with extended industrial temperature capabilities. The 500 mV hysteresis makes it suitable for noisy environments compared to non-hysteretic alternatives. Verify that the 120 kbps data rate meets system requirements, as higher-speed variants exist within the family. Ensure the design accommodates the specific pinout of the 20-LCC package.

Part Context

This component belongs to the MAX232 family of low-power RS-232 drivers and receivers. The EMLP suffix denotes a specific surface-mount leadless chip carrier package variant. While sharing core functionality with through-hole versions like the MAX232AN, it offers distinct physical integration advantages for automated assembly processes.

Replacement Considerations

• MAX232AMLP