MAX9095ASD+

Overview

The MAX9095ASD+ is a quad, general-purpose analog comparator manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single supply voltage ranging from +1.8V to +5.5V and features open-drain outputs. The device includes internal hysteresis of 2mV for noise immunity. Key electrical parameters include a typical propagation delay of 100ns, an input offset voltage of 7mV, and a supply current of 360µA for all four comparators at +5.0V. It supports an operating temperature range from -40°C to +125°C and is housed in a 14-pin SO package.

Feature Summary

• Internal 2mV hysteresis prevents output oscillations caused by noise or slow-moving input signals.
• Open-drain outputs allow flexible interfacing with various logic families through external pull-up resistors.
• Input common-mode voltage range extends below ground, enabling direct connection to sensors referenced to negative supplies.
• No phase reversal occurs when inputs are overdriven beyond the supply rails.

Applications

• Mobile communications equipment
• Notebooks and personal digital assistants (PDAs)
• Battery-powered electronic devices
• General-purpose low-voltage applications

Procurement Notes

Verify the specific suffix 'SD+' indicates the 14-pin SO package and lead-free/RoHS compliance status as defined in the manufacturer's ordering information. Confirm that the component meets the required automotive temperature range specifications if deployed in harsh environments. Ensure the design accounts for the open-drain output configuration requiring appropriate external pull-up components for proper signal levels.

Selection Notes

Select this component when a quad comparator configuration is required within a compact footprint. It serves as a pin-for-pin compatible replacement for legacy LMX339H devices. Consider its low supply current characteristics for battery-operated systems where power efficiency is critical. The internal hysteresis makes it suitable for noisy environments without requiring external feedback networks.

Part Context

The MAX9095ASD+ belongs to the MAX909x family of general-purpose, low-voltage comparators. This series includes dual and quad variants designed for cost-sensitive and space-constrained portable electronics. The family shares similar electrical characteristics but varies in channel count and package options, offering flexibility for different integration needs while maintaining compatibility with standard comparator applications.

Replacement Considerations

The datasheet identifies the MAX9095 as a pin-for-pin compatible replacement for the LMX339H. Designers transitioning from older comparator technologies should verify that the new input bias currents and offset voltages meet the specific circuit requirements.

FAQ

Does the MAX9095ASD+ include built-in hysteresis?

Yes, the MAX9095 includes 2mV of internal hysteresis to provide noise immunity and prevent output oscillations.

What is the input common-mode voltage range?

The input common-mode voltage range extends from -0.1V below the negative supply to within +0.8V of the positive supply.

How does the device handle overdriven inputs?

The MAX9095 is designed to have no phase reversal for overdriven inputs, ensuring stable operation even when input voltages exceed the supply rails.