MAX3226EUE

Overview

The MAX3226EUE is a single-channel RS-232 transceiver manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates on a single power supply ranging from 3.0 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. The device provides full-duplex communication with one driver and one receiver, achieving data rates up to 250 kb/s. Key electrical specifications include a propagation delay of 0.15 µs, an operating supply current of 1 mA, and ESD protection rated at 15 kV. It features an integrated shutdown mode for power conservation and functions reliably within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates AutoShutdown Plus technology to automatically reduce power consumption during idle periods or when the RS-232 port is not in use.
• Provides robust electrostatic discharge protection rated at 15 kV to safeguard connected interfaces against static events.
• Supports flexible power supply configurations compatible with standard 3.3 V and 5 V systems without requiring external voltage conversion.

Applications

• Industrial control systems requiring reliable serial communication in electrically noisy environments.
• Portable battery-powered devices utilizing low-power interface solutions for extended operational life.
• Embedded systems connecting microcontrollers to PC serial ports or other RS-232 compliant peripherals.

Procurement Notes

Verify the specific suffix (e.g., UE vs. EE) to confirm the package type and temperature grade before ordering. Confirm RoHS compliance status through official manufacturer documentation. Check for alternative packaging options such as tape and reel if high-volume production is required. Ensure the selected variant matches the required thermal performance for the intended application environment.

Selection Notes

Select this component when a single-channel RS-232 interface is sufficient for the design. Consider the TSSOP-16 package for surface-mount applications requiring compact board space. Evaluate the 250 kb/s speed limit against system requirements; higher speeds may necessitate different models. Verify that the 1 mA quiescent current aligns with the overall power budget constraints of the target device.

Part Context

This part belongs to the MAX3226E series of RS-232 transceivers designed for low-voltage operation. It shares functional similarities with other members of the family but differs in package configuration and specific thermal ratings. The MAX3226EUE specifically denotes the TSSOP-16 package variant. It serves as a direct replacement for older generation RS-232 drivers while offering improved power efficiency and ESD resilience.

Replacement Considerations

Direct substitutes include other variants within the MAX3226E family, such as the MAX3226EEAE+ in SSOP-16 or MAX3226EETE+ in TQFN-EP-16 packages. Cross-referencing pin compatibility and electrical parameters is essential when substituting across different package types within the same series.