MAX975EUA-T

Comparators Overview

The MAX975EUA-T is a single-channel analog comparator from Analog Devices, housed in an 8-pin µMAX package. It operates on a single supply voltage ranging from +2.7V to +5.25V and supports an operating temperature range of -40°C to +85°C. The device features three modes: high speed (28ns propagation delay, 250µA current), low power (3µA current), and auto-standby. It provides rail-to-rail outputs capable of driving CMOS/TTL logic without external pull-ups.

Comparators Feature Summary

• Features three operating modes including high-speed, low-power, and auto-standby for optimized power management.
• Provides rail-to-rail output operation compatible with standard digital logic families.
• Includes internal hysteresis in high-speed mode to ensure clean switching with slow-moving signals.
• Allows adjustable timeout periods via external capacitors to control auto-standby entry.

Comparators Applications

• Battery-powered systems
• RF ID tags
• Keyless entry systems
• Threshold detectors and discriminators

Comparators Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the manufacturer designation matches Analog Devices Inc./Maxim Integrated to ensure authenticity. Check RoHS compliance status as indicated in official documentation before finalizing procurement decisions.

Comparators Selection Notes

Select this component for applications requiring dual-speed performance between high-speed response and ultra-low power consumption. The auto-standby feature is suitable for battery-operated devices where idle power reduction is critical. Ensure the input common-mode voltage range fits within the system's signal levels relative to the supply voltage.

Comparators Part Context

This part belongs to the MAX975/MAX977 family of comparators designed for +3V and +5V single-supply applications. While the MAX975 offers a single channel, the MAX977 provides dual channels. Both share similar electrical characteristics but differ in pin count and package options such as SO and QSOP.

Comparators Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

Comparators FAQ

How is the auto-standby timeout period determined?

The timeout period is programmed using an external capacitor connected to the STO_ pin. The relationship is defined as tASB = 10 x CSTO µs, where CSTO is in picofarads.

What is the function of the STAT pin?

The STAT pin indicates the operating mode; it is low during high-speed operation and high during auto-standby or low-power modes. It can also source up to 3mA to power additional circuitry.