CS4364-CQZ Equivalent & Substitute Parts

Part Overview

The CS4364-CQZ is a 24-bit audio digital-to-analog converter (DAC) manufactured by Cirrus Logic Inc., designed for high-resolution audio applications with support for DSD and PCM data interfaces. This component operates across a wide temperature range (-40°C to 85°C) and is housed in a 48-LQFP surface mount package.

The CS4364-CQZ carries a product status of "Not For New Designs," indicating that Cirrus Logic has discontinued active development and support for this model. Organizations currently using this component or requiring equivalent functionality must identify suitable alternatives to ensure long-term supply chain stability and design continuity.

Substiute Parts

CS4364-CQZ

Cirrus Logic Inc.In Stock: 2283CS4364-CQZ Datasheet

Current PartRFQ

CS4385-CQZ

Cirrus Logic Inc.In Stock: 2378CS4385-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS4364-CQZ is determined by the following critical parameters:

• Package / Case: 48-LQFP (7x7) — Physical and electrical compatibility requires identical package geometry
• Resolution: 24 bits — Audio fidelity and signal processing chain compatibility
• Sampling Rate: 216 kHz — Maximum supported frequency for data throughput
• Data Interface: DSD, PCM — Protocol compatibility with existing signal sources
• Voltage Supply Range: 2.37V to 5.25V — Power distribution and circuit integration compatibility
• Operating Temperature Range: -40°C to 85°C — Environmental operating conditions
• Mounting Type: Surface Mount — PCB assembly process compatibility

The CS4385-CQZ qualifies as a substitute based on matching all critical parameters. Variations in channel count and product status do not preclude substitution when electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

The CS4385-CQZ is electrically and mechanically compatible with the CS4364-CQZ across all critical parameters: identical resolution, sampling rate, data interface support, voltage supply range, operating temperature range, package geometry, and moisture sensitivity classification.

The CS4385-CQZ carries a "Last Time Buy" product status, indicating limited availability with a defined end-of-life window. Organizations should evaluate long-term supply requirements and procurement timelines accordingly.

Both components maintain equivalent RoHS compliance status (RoHS Compliant and ROHS3 Compliant), ensuring regulatory alignment for applications subject to hazardous substance restrictions.

The CS4385-CQZ provides eight output channels compared to the six channels of the CS4364-CQZ. This increased channel count does not compromise substitution eligibility when application requirements do not exceed six channels; unused channels remain inactive without affecting core DAC functionality.

Frequently Asked Questions (FAQ)

Q: Can the CS4385-CQZ directly replace the CS4364-CQZ in existing designs?

A: Yes. Both components share identical package geometry (48-LQFP 7x7), resolution (24 bits), sampling rate (216 kHz), data interface support (DSD, PCM), voltage supply range (2.37V to 5.25V), and operating temperature range (-40°C to 85°C). Pin-level compatibility and electrical characteristics align for direct substitution.

Q: What is the significance of the channel count difference?

A: The CS4364-CQZ provides six output channels, while the CS4385-CQZ provides eight. When substituting with the CS4385-CQZ, the two additional channels are available for expansion or remain unused. This does not affect the operation of the six active channels required by existing designs.

Q: How do the product status designations affect component selection?

A: The CS4364-CQZ is marked "Not For New Designs," indicating discontinued development. The CS4385-CQZ is marked "Last Time Buy," indicating a defined procurement window before end-of-life. For new designs, neither component is recommended; however, for existing applications requiring replacement stock, the CS4385-CQZ offers a viable alternative with extended availability relative to the CS4364-CQZ.

Q: Are there compliance or certification differences between these components?

A: Both components are RoHS compliant (CS4364-CQZ: RoHS Compliant; CS4385-CQZ: ROHS3 Compliant), REACH Unaffected, and classified under ECCN EAR99. Moisture sensitivity levels are identical (MSL 3, 168 Hours). No compliance barriers exist for substitution.

Q: What packaging and handling considerations apply to both components?

A: Both components are supplied in trays with identical moisture sensitivity classification (MSL 3, 168 Hours). Standard surface mount assembly processes and storage protocols apply to both the CS4364-CQZ and CS4385-CQZ without modification.