TS487IDT Equivalent & Substitute Parts

Part Overview

The TS487IDT is a Class AB stereo amplifier IC manufactured by STMicroelectronics, designed for headphone applications with 2-channel output capability. This component delivers 108mW per channel at 16Ohm load impedance and operates across a 2V to 5.5V supply voltage range. The TS487IDT is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity. Substitute parts must maintain functional compatibility while meeting the same electrical and mechanical specifications.

Substiute Parts

TS487IDT

STMicroelectronicsIn Stock: 19193TS487IDT Datasheet

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TPA122D

Texas InstrumentsIn Stock: 2089TPA122D Datasheet

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TPA122DR

Texas InstrumentsIn Stock: 16044TPA122DR Datasheet

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TPA6111A2D

Texas InstrumentsIn Stock: 2512TPA6111A2D Datasheet

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TPA6111A2DR

Texas InstrumentsIn Stock: 24243TPA6111A2DR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the TS487IDT are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Compatibility Criteria:

• Package Type: 8-SOIC form factor (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Output Configuration: Headphones, 2-Channel (Stereo)
• Amplifier Class: Class AB
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Supply Voltage Range: Minimum 2V to 5.5V maximum
• RoHS Compliance: ROHS3 Compliant

Substitution Logic: Substitute parts are grouped into two categories based on output power capability at specified load impedances. The TS487IDT delivers 108mW per channel at 16Ohm load. Substitute parts either match this specification or provide equivalent or superior output power performance at compatible load impedances. All substitute parts maintain the same 8-SOIC package footprint, surface mount configuration, and operating temperature range, ensuring direct PCB compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

The TPA6111A2D and TPA6111A2DR are the preferred substitutes for the TS487IDT. Both components deliver 150mW per channel at 16Ohm load impedance, exceeding the original specification of 108mW. These parts maintain identical 8-SOIC packaging, surface mount configuration, and operating temperature range. Both are manufactured by Texas Instruments and carry Active product status with ROHS3 compliance. The TPA6111A2DR variant is available in Cut Tape and Digi-Reel packaging with higher inventory availability (24,193 units), while the TPA6111A2D is supplied in Tube packaging (2,444 units available).

Secondary Substitutes (Limited Compatibility):

The TPA122D and TPA122DR are Class AB stereo amplifier ICs with reduced output power specifications (70mW per channel at 8Ohm load). These components maintain the same 8-SOIC package footprint and operating temperature range but deliver lower output power and operate at a minimum supply voltage of 2.5V rather than 2V. These substitutes are suitable only for applications where the reduced output power specification is acceptable. The TPA122DR variant is supplied in Tape & Reel packaging (16,011 units available), while the TPA122D is supplied in Tube packaging (2,060 units available).

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, matching the regulatory profile of the original TS487IDT component.

Frequently Asked Questions (FAQ)

Q: Can the TPA6111A2D or TPA6111A2DR be used as direct replacements for the TS487IDT?

A: Yes. Both TPA6111A2D and TPA6111A2DR components are direct substitutes. They share identical 8-SOIC package dimensions, surface mount configuration, and operating temperature range. The TPA6111 series delivers 150mW per channel at 16Ohm load, which exceeds the TS487IDT specification of 108mW per channel at the same impedance. No PCB modifications are required for substitution.

Q: What is the difference between TPA6111A2D and TPA6111A2DR?

A: Both parts are electrically identical with the same electrical specifications and performance characteristics. The primary difference is packaging format: TPA6111A2D is supplied in Tube packaging, while TPA6111A2DR is supplied in Cut Tape and Digi-Reel packaging. Selection depends on production volume requirements and assembly process compatibility.

Q: Can the TPA122D or TPA122DR be used as substitutes?

A: The TPA122D and TPA122DR are compatible from a package and form factor perspective but deliver reduced output power (70mW per channel at 8Ohm load versus 108mW per channel at 16Ohm for the TS487IDT). These substitutes are suitable only for applications where the lower output power specification meets design requirements. Additionally, the minimum supply voltage is 2.5V rather than 2V.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts (TPA122D, TPA122DR, TPA6111A2D, and TPA6111A2DR) are ROHS3 compliant, matching the regulatory status of the TS487IDT.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across the same temperature range as the TS487IDT: -40°C to 85°C (TA). This ensures thermal compatibility in equivalent application environments.

Q: Do substitute parts require different PCB layout considerations?

A: No. All substitute parts use the identical 8-SOIC (0.154", 3.90mm Width) package footprint. Existing PCB layouts designed for the TS487IDT accommodate all substitute parts without modification.

Q: What features do substitute parts provide?

A: All substitute parts include Depop and Short-Circuit Protection features. The Texas Instruments substitutes (TPA122 and TPA6111 series) additionally provide Thermal Protection and Shutdown functionality, offering enhanced protection compared to the original TS487IDT Standby feature.