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CS8416-CSZR Equivalent & Substitute Parts
Part Overview
The CS8416-CSZR is an audio receiver IC manufactured by Cirrus Logic Inc., designed for digital audio interfacing applications. This 28-SOIC surface mount component operates across a supply voltage range of 3.3V to 5V and supports audio specifications from 32kHz to 192kHz with dual interface support (I2C and SPI). The CS8416-CSZR is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CS8416-CSZR |
| Manufacturer | Cirrus Logic Inc. |
| Function | Audio Receiver |
| Number of Channels | 8 |
| Interface | I2C, SPI |
| Voltage - Supply | 3.3V ~ 5V |
| Operating Temperature | -10°C ~ 70°C (TA) |
| Specifications | 32kHz ~ 192kHz |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the CS8416-CSZR is determined by the following critical parameters:
Package Compatibility: Both the main part and substitute must use the 28-SOIC surface mount package to ensure PCB layout compatibility without redesign.
Interface Protocol Support: Both parts must support I2C and SPI interfaces to maintain firmware and hardware communication protocols.
Operating Temperature Range: The substitute must cover the required operating temperature range of -10°C to 70°C.
Supply Voltage Compatibility: The substitute voltage range must overlap with or be contained within the main part's 3.3V to 5V specification.
Audio Frequency Specification: The substitute must support the 32kHz to 192kHz audio bandwidth requirement.
Regulatory Compliance: Both parts must maintain ROHS3 compliance and equivalent moisture sensitivity ratings for manufacturing and field reliability.
The CS8416K-CSZR qualifies as a manufacturer-recommended substitute based on these parameters, despite differences in channel count and specific voltage range, as it maintains the same package, interface protocols, temperature range, and regulatory compliance profile.
Parameter Comparison
| Parameter | CS8416-CSZR (Main Part) | CS8416K-CSZR (Substitute) |
|---|---|---|
| Manufacturer | Cirrus Logic Inc. | Cirrus Logic Inc. |
| Function | Audio Receiver | Audio Receiver |
| Interface | I2C, SPI | I2C, SPI |
| Operating Temperature | -10°C ~ 70°C | -10°C ~ 70°C |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| Voltage - Supply | 3.3V ~ 5V | 3.13V ~ 3.46V |
| Number of Channels | 8 | 1 |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The CS8416K-CSZR is the manufacturer-recommended substitute for the obsolete CS8416-CSZR. Both components share identical package geometry, interface protocols, operating temperature range, and regulatory compliance certifications. The substitute maintains active product status with Cirrus Logic Inc., ensuring continued availability and manufacturing support.
Selection of the CS8416K-CSZR requires verification that the application's power supply architecture can operate within the narrower voltage range of 3.13V to 3.46V. Applications currently operating the CS8416-CSZR at voltages above 3.46V will require power supply redesign or alternative component selection.
The difference in channel count (8 channels versus 1 channel) reflects a functional distinction between the two variants. System-level integration requirements determine whether single-channel or multi-channel capability is necessary for the intended application.
Frequently Asked Questions (FAQ)
Q: Can the CS8416K-CSZR directly replace the CS8416-CSZR without PCB modification?
A: Yes, both components use identical 28-SOIC packaging. PCB layout remains compatible without redesign. However, power supply voltage range compatibility must be confirmed for your specific application.
Q: What is the primary difference between these two parts?
A: The CS8416-CSZR provides 8-channel audio reception with a 3.3V to 5V supply range, while the CS8416K-CSZR provides 1-channel audio reception with a narrower 3.13V to 3.46V supply range. Both maintain identical interface protocols and package specifications.
Q: Why is the CS8416-CSZR classified as obsolete?
A: Obsolete status indicates that Cirrus Logic Inc. has discontinued manufacturing and support for this component. The CS8416K-CSZR represents the active alternative for new designs and ongoing system support.
Q: Are there any compliance or reliability differences between these parts?
A: Both components maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 3, 168 hours). Regulatory and reliability profiles are equivalent.
Q: What interface protocols do these components support?
A: Both the CS8416-CSZR and CS8416K-CSZR support I2C and SPI communication protocols, ensuring firmware compatibility across substitution.
Q: What audio frequency range do these components support?
A: The CS8416-CSZR supports 32kHz to 192kHz audio specifications. The CS8416K-CSZR maintains this same audio bandwidth capability.
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