AD8564ARZ

Overview

The AD8564ARZ is a quad analog comparator manufactured by Analog Devices Inc. It features separate analog and digital power supplies, enabling operation from ±5 V dual supplies or a 5 V single supply while maintaining CMOS/TTL-compatible outputs. The device offers a typical propagation delay of 7 ns with a maximum of 9.8 ns under specified conditions. Input characteristics include an offset voltage of up to 7 mV and an input bias current of ±4 µA. It operates within an industrial temperature range of -40°C to +125°C and is housed in a 16-lead narrow body SOIC package.

Feature Summary

• Features separate analog and digital supply sections to minimize pin interaction between input and output stages.
• Provides TTL and CMOS logic-compatible outputs with wide output swing capabilities.
• Delivers fast propagation delay suitable for high-speed timing and data communication circuits.

Applications

• High speed timing circuits
• Line receivers
• Data communications systems
• Window comparators

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure that the procurement channel provides valid traceability for the component lot. Confirm that the received parts match the exact part number specifications regarding electrical parameters and thermal ratings before integration into the design.

Selection Notes

Select this component when independent analog and digital supply rails are required to isolate noise between input and output stages. It is appropriate for designs needing fast response times with standard logic-level outputs. Consider the 16-lead SOIC footprint during PCB layout planning. Verify that the application environment stays within the guaranteed industrial temperature range for full electrical specification adherence.

Part Context

This component belongs to the AD8564 family of quad comparators designed for general-purpose applications requiring high speed. It serves as a direct upgrade for MAX901 designs, offering lower supply currents while maintaining pin compatibility. The device integrates four independent comparators within a single compact package, simplifying board space requirements for multi-channel signal processing tasks.

Replacement Considerations

The AD8564 is pin compatible with the MAX901. Designers upgrading from MAX901 should verify that the lower supply current of the AD8564 meets their power budget requirements without affecting circuit stability.