MAX9075EXK-T

Overview

The MAX9075EXK-T is a single-channel analog comparator from Analog Devices Inc./Maxim Integrated, housed in a 5-pin SC-70 surface-mount package. It operates on a single supply voltage ranging from 2.1V to 5.5V with a typical quiescent current of 3µA per channel. The device features a propagation delay of 580ns and rail-to-rail push-pull outputs capable of sourcing or sinking up to 2mA. Input characteristics include a common-mode range extending from -0.2V to VCC - 1.2V, an input offset voltage of ±1mV (typical), and an input bias current of -5nA. It functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low power consumption of 3µA per comparator enables extended battery life in portable applications.
• Rail-to-rail push-pull output stage provides full voltage swing and drives TTL/CMOS logic loads directly.
• Ground-sensing inputs allow the common-mode voltage range to extend below the negative supply rail.
• No differential clamp across inputs permits operation with large differential voltages without phase inversion.

Applications

• Battery-powered systems requiring minimal standby current
• Threshold detectors and discriminators for signal conditioning
• Keyless entry systems utilizing low-voltage sensors
• IR receivers for remote control signal processing
• Digital line receivers for data transmission interfaces

Procurement Notes

Verify the specific ordering suffix 'EXK+T' corresponds to the lead-free, tape-and-reel configuration in the 5-pin SC-70 package. Confirm that the manufacturer designation matches Analog Devices Inc. or Maxim Integrated as specified in official documentation. Ensure compliance with RoHS standards by checking for the '+' symbol in the part number. Cross-reference the datasheet revision to validate electrical parameters against your design requirements.

Selection Notes

Select this component when space constraints necessitate the ultra-small SC-70 footprint combined with low-power operation. It is suitable for designs requiring ground-sensing inputs where the signal may drop below the system ground potential. Consider the 580ns propagation delay for timing-critical applications; faster alternatives may be required for high-speed digital interfaces. Verify that the 2mA output drive capability meets the load requirements of the connected logic family.

Part Context

The MAX9075EXK-T belongs to the MAX9075/MAX9077 family of low-cost, ultra-small comparators optimized for 3V and 5V single-supply environments. While the MAX9075 offers a single channel, the MAX9077 variant provides dual channels in larger packages such as SOT23-8, µMAX, and SO. This family shares core architectural features including low quiescent current and rail-to-rail I/O, making it a versatile solution for various consumer and industrial electronics.

Replacement Considerations

Direct functional substitutes within the same package include other single-channel comparators from the MAX907x series if pin compatibility allows. For different package requirements, consider the MAX9075EUK+T which utilizes the SOT23-5 package while maintaining identical electrical specifications. Always verify pinout alignment and thermal dissipation characteristics when transitioning between package types.

FAQ

Does the MAX9075EXK-T exhibit output phase inversion when overdriven?

No, the device is designed to prevent output phase inversion even when inputs are overdriven beyond the supply rails.

What is the maximum continuous short-circuit duration for the outputs?

The outputs can tolerate a continuous short-circuit fault condition to either the positive supply or ground without damage.

How does the input common-mode range compare to standard comparators?

Unlike many comparators, the MAX9075EXK-T allows the common-mode input voltage to extend down to -0.2V, enabling ground sensing capabilities.