MAX20326EFS+T

Signal Buffers, Repeaters, Splitters Overview

The MAX20326EFS+T is a dual-channel, precision, open-drain communication-line accelerator designed for high-speed operation in highly capacitive, multidrop node systems. It provides the necessary acceleration from low-to-high transitions to enable faster data transfer on I2C, MDIO, and 1-Wire buses. The device operates over an extended temperature range of -40°C to +85°C and features a wide operating input voltage of 1.4V to 5.5V. Key electrical parameters include a precision accelerator trigger threshold of 0.5V ±50mV, a resistive static pullup resistance of 2.2kΩ (typical), and a supply current of 18µA at VCC ≤ 1.8V. It is housed in a compact 4-pin flip-chip QFN package with a 0.5mm pitch.

Signal Buffers, Repeaters, Splitters Feature Summary

• Precision Accelerator Trigger Threshold: Provides accurate triggering for optimized turn-on times.
• Integrated Precision Pullup: Features built-in pullup resistors to save space and simplify design.
• Low EMI Operation: Controlled acceleration slope minimizes electromagnetic interference.
• High-Speed Capability: Supports data rates of at least 1MHz with bus capacitance up to 1000pF.

Signal Buffers, Repeaters, Splitters Applications

• I2C Bus
• MDIO Bus
• 1-Wire Bus

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix '+T' indicates tape and reel packaging when sourcing components. Confirm that the 'E' designation corresponds to the specified -40°C to +85°C extended temperature range. Ensure compatibility with the 4-pin FC QFN footprint during procurement planning.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring precise control over signal rise times in open-drain configurations. Consider the integrated 2.2kΩ pullup resistor when designing external circuitry to avoid redundancy. Evaluate the 1.4V to 5.5V operating voltage range against system power rails to ensure proper functionality across all expected conditions.

Signal Buffers, Repeaters, Splitters Part Context

The MAX20326 belongs to Maxim Integrated's family of precision bus accelerators. It is specifically engineered to enhance performance in multidrop systems where high capacitance typically degrades signal integrity. This part serves as a specialized solution for maintaining reliable communication speeds in constrained environments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

No direct public substitute part numbers are documented in the provided datasheet. Verify pinout and functional compatibility if considering alternative bus accelerators from other manufacturers.

Signal Buffers, Repeaters, Splitters FAQ

What is the typical value of the internal pullup resistor?

The typical value of the integrated precision pullup resistor is 2.2kΩ.

What is the maximum supported bus capacitance?

The device supports a total bus capacitance of up to 1000pF while maintaining data rates of at least 1MHz.

How does the device handle low-to-high transitions?

It uses a slope-adjusted accelerator that activates when the IOVCC_ line transitions from logic-low to logic-high to optimize turn-on time.