AD8564AR

Overview

The AD8564AR is a quad analog comparator from Analog Devices Inc. featuring a 7 ns propagation delay and separate input/output power supplies. It supports 5 V single-supply or ±5 V dual-supply operation with CMOS/TTL-compatible outputs. Key electrical parameters include a maximum offset voltage of 7 mV, input bias current of 4 µA, and output current capability of 40 mA. The device 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 for independent operation and noise isolation.
• Provides fast 7 ns propagation delay suitable for high-speed timing applications.
• Delivers TTL/CMOS logic-compatible outputs with wide swing capabilities.
• Supports both single-supply (5 V) and dual-supply (±5 V) configurations.

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 the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Confirm that the delivered part matches the specified 16-lead narrow body SOIC form factor required for the design.

Selection Notes

Select this component when a quad comparator with independent supply rails is required to minimize cross-talk between input and output stages. The 7 ns delay makes it suitable for high-frequency signal processing. Verify that the system can accommodate the separate V+ANA and V+DIG pins and that the 16-lead SOIC footprint fits the PCB layout constraints.

Part Context

This part belongs to the AD8564 family of ultra-fast comparators. It serves as a pin-compatible upgrade for MAX901 designs while offering lower supply currents. The family includes variants in TSSOP and PDIP packages, providing flexibility for different mounting requirements and thermal management needs in industrial applications.

Replacement Considerations

The AD8564 is explicitly noted as a pin-compatible replacement for the MAX901. Designers upgrading from MAX901 should verify that the lower supply current requirements are met by their power budget.

FAQ

Can the AD8564 operate with a single 5 V supply?

Yes, the device supports 5 V single-supply operation where V+ANA equals V+DIG at 5 V and V-ANA is grounded.

What is the input common-mode voltage range?

With a single 5 V supply, the range is 0 V to 2.75 V. With ±5 V supplies, it extends from -4.9 V to +3.5 V.