MAX5464EXT+T

Overview

The MAX5464EXT+T is a single-channel, linear-taper digital potentiometer featuring 32 tap points and a nominal end-to-end resistance of 50 kΩ. It operates on a single supply voltage ranging from +2.7V to +5.5V with an active supply current of 25 µA typical. The device utilizes a 2-wire serial interface (CS and U/D) for wiper position control. It includes power-on reset circuitry that initializes the wiper to midscale upon startup. The component is housed in a 6-pin SC-70 package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• 32-Tap Linear Digital Potentiometer with 50 kΩ Nominal Resistance
• 2-Wire Serial Interface (CS/U/D) for Increment/Decrement Control
• Ultra-Low Supply Current: 25 µA Active, 1 µA Standby
• Power-On Reset to Midscale Position
• Glitchless Switching Between Resistor Taps

Applications

• LCD Screen Contrast Adjustment
• Volume Control Circuits
• Mechanical Potentiometer Replacement
• Adjustable Gain Amplifier Configurations
• Line Impedance Matching

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required operating voltage range of 2.7V to 5.5V. Confirm that the 6-pin SC-70 footprint matches the target PCB layout. Check for RoHS compliance status if required by assembly standards.

Selection Notes

Select this component when a variable resistor configuration is needed rather than a potentiometer. The MAX5464 connects the wiper and high terminal internally. For applications requiring a true potentiometer output, consider the MAX5465 instead. Ensure the system can accommodate the 50 kΩ resistance value and the 32-step resolution provided by the 32-tap architecture.

Part Context

The MAX5464 belongs to the FleaPoT family of 2-wire digital potentiometers from Analog Devices/Maxim Integrated. This family offers three resistance values (10kΩ, 50kΩ, 100kΩ) and two configurations (variable resistor or potentiometer). The MAX5464 specifically provides the 50kΩ variable resistor option in a compact 6-pin SC-70 package, distinguishing it from the 10kΩ SOT23 variants and the 100kΩ options.

Replacement Considerations

MAX5465EXT+T: Identical electrical characteristics but configured as a potentiometer rather than a variable resistor. MAX5463EXT+T: Same 50kΩ variable resistor function but packaged in a 5-pin SC-70 format.