PCM1608Y Equivalent & Substitute Parts

Part Overview

The PCM1608Y is an 8-channel audio digital-to-analog converter (DAC) with 24-bit resolution and 192 kHz sampling rate, designed for high-fidelity audio applications. It features an I2S digital interface and operates from dual supply voltages (3V–3.6V and 5V). The device is currently classified as Obsolete, making identification of compatible substitute parts essential for ongoing production support and design continuity.

Substiute Parts

PCM1608Y

Texas InstrumentsIn Stock: 1244PCM1608Y Datasheet

Current PartRFQ

PCM1608KY

Texas InstrumentsIn Stock: 3151PCM1608KY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCM1608Y is determined by strict equivalence across the following critical parameters:

• Number of Channels: 8 channels (fixed requirement)
• Resolution: 24-bit (fixed requirement)
• Sampling Rate: 192 kHz (fixed requirement)
• Data Interface: I2S (fixed requirement)
• Package / Case: 48-LQFP (7x7) (fixed requirement)
• Voltage Supply Source: Analog and Digital (fixed requirement)
• Voltage - Supply Range: 3V ~ 3.6V, 5V (fixed requirement)
• Operating Temperature Range: -25°C ~ 85°C (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)

The PCM1608KY meets all these criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The PCM1608KY is the direct functional equivalent of the PCM1608Y. Both devices are manufactured by Texas Instruments and share identical electrical and mechanical specifications across all critical parameters. The primary distinction is packaging format: the PCM1608KY is supplied in Tray packaging, whereas the PCM1608Y packaging format is not specified.

Both parts carry legacy product status (Obsolete and Not For New Designs, respectively), indicating that neither is recommended for new design implementations. However, for applications requiring the PCM1608Y, the PCM1608KY provides full electrical and mechanical compatibility with identical performance characteristics.

Compliance certifications are equivalent: both parts are ROHS3 Compliant, REACH Unaffected, and carry MSL Level 1 (Unlimited moisture sensitivity rating).

Frequently Asked Questions (FAQ)

Q: Can the PCM1608KY be used as a direct replacement for the PCM1608Y?

A: Yes. The PCM1608KY is electrically and mechanically identical to the PCM1608Y across all functional parameters, including channel count, resolution, sampling rate, data interface, supply voltage, operating temperature range, and package dimensions.

Q: What is the difference between the PCM1608Y and PCM1608KY?

A: The primary difference is packaging format. The PCM1608KY is supplied in Tray packaging. Both devices are functionally equivalent with identical electrical specifications and 48-LQFP (7x7) package dimensions.

Q: Are there any compliance or certification differences?

A: No. Both the PCM1608Y and PCM1608KY carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and MSL Level 1 (Unlimited).

Q: Why are both parts classified as legacy products?

A: The PCM1608Y is marked Obsolete, and the PCM1608KY is marked Not For New Designs. Both classifications indicate that Texas Instruments no longer actively supports these devices for new applications. For new designs, alternative current-generation audio DAC solutions should be evaluated.

Q: Is the 48-LQFP package compatible with existing PCB layouts?

A: Yes. Both parts use the identical 48-LQFP (7x7) package, ensuring pin-for-pin compatibility and direct PCB layout compatibility without modification.

Q: What are the supply voltage requirements?

A: Both devices require dual supply voltages: 3V to 3.6V for one supply rail and 5V for the other, supporting both analog and digital supply sources.