TS487ID Equivalent & Substitute Parts

Part Overview

The TS487ID is a Class AB stereo amplifier IC manufactured by STMicroelectronics, designed for headphone applications with 2-channel stereo output capability. This component delivers 108mW per channel at 16-ohm load impedance and operates across a 2V to 5.5V supply voltage range. The TS487ID is classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure long-term component availability for new production and legacy system support.

Substiute Parts

TS487ID

STMicroelectronicsIn Stock: 1259TS487ID 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

Substitution of the TS487ID is determined by strict alignment of the following electrical and mechanical parameters:

Critical Compatibility Parameters:

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

Output Power Considerations: Substitute parts are grouped into two categories based on maximum output power delivery at specified load impedances. The TS487ID delivers 108mW per channel at 16-ohm load. Substitute parts with equal or greater output power at the same or lower impedance load are considered direct functional equivalents.

Feature Set: All substitute parts include protection features (Short-Circuit Protection, Thermal Protection) and control functions (Depop, Shutdown/Standby) that maintain design safety and performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

The TPA6111A2D and TPA6111A2DR represent the optimal substitutes for the TS487ID. Both parts are manufactured by Texas Instruments and are in active product status, ensuring long-term availability and supply chain stability. These devices deliver 150mW per channel at 16-ohm load impedance, exceeding the TS487ID output power specification. The TPA6111A2DR variant is available in Cut Tape and Digi-Reel packaging with significantly higher inventory (24,193 units), providing superior procurement flexibility. Both TPA6111 variants maintain full compliance with ROHS3 and REACH requirements, identical to the TS487ID.

Secondary Substitutes (Lower Power Output):

The TPA122D and TPA122DR are active Texas Instruments products suitable for applications where reduced output power is acceptable. These parts deliver 70mW per channel at 8-ohm load impedance, representing lower power output compared to the TS487ID. The TPA122DR variant offers Tape & Reel packaging with 16,011 units in inventory. Both TPA122 variants maintain identical operating temperature range, RoHS compliance, and moisture sensitivity specifications as the TS487ID. The minimum supply voltage for TPA122 devices is 2.5V, compared to 2V for the TS487ID, which may require circuit evaluation in ultra-low voltage applications.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the TS487ID regulatory profile. All devices are classified under identical HTSUS code 8542.33.0001 and ECCN EAR99, ensuring consistent regulatory treatment across substitution scenarios.

Frequently Asked Questions (FAQ)

Q: Can the TPA122D or TPA122DR directly replace the TS487ID in existing designs?

A: The TPA122 series shares identical package geometry (8-SOIC), mounting type (Surface Mount), and operating temperature range (-40°C ~ 85°C). However, the TPA122 devices deliver 70mW per channel at 8-ohm load, compared to the TS487ID's 108mW at 16-ohm load. Direct substitution is possible only if the application's impedance load and power requirements are compatible with the lower output specification. The minimum supply voltage for TPA122 is 2.5V versus 2V for TS487ID.

Q: What are the advantages of the TPA6111A2D and TPA6111A2DR over the TS487ID?

A: The TPA6111A2 series delivers 150mW per channel at 16-ohm load impedance, exceeding the TS487ID's 108mW specification. Both variants are in active product status with robust inventory availability. The TPA6111A2DR offers 24,193 units in stock with Cut Tape and Digi-Reel packaging options. All TPA6111A2 devices include thermal protection in addition to short-circuit protection, providing enhanced reliability compared to the TS487ID's short-circuit protection alone.

Q: Are there packaging differences between substitute parts?

A: All substitute parts use the identical 8-SOIC (0.154", 3.90mm Width) package form factor, ensuring PCB layout compatibility. Packaging format differences exist at the distribution level: TPA122D is supplied in Tube, TPA122DR in Tape & Reel, TPA6111A2D in Tube, and TPA6111A2DR in Cut Tape and Digi-Reel. These distribution formats do not affect electrical or mechanical compatibility on the PCB.

Q: What is the supply voltage compatibility range for substitutes?

A: The TS487ID operates from 2V to 5.5V. All Texas Instruments substitute parts (TPA122 and TPA6111A2 series) operate from 2.5V to 5.5V. Applications requiring operation below 2.5V supply voltage cannot use the substitute parts without circuit redesign.

Q: Do all substitute parts include the same protection features as the TS487ID?

A: The TS487ID includes Depop, Short-Circuit Protection, and Standby functionality. All substitute parts include Depop and Short-Circuit Protection. The TPA122 and TPA6111A2 series add Thermal Protection and Shutdown functionality, providing enhanced protection beyond the TS487ID specification.

Q: Which substitute part offers the best inventory availability?

A: The TPA6111A2DR provides the highest inventory level with 24,193 units in stock, followed by TPA122DR with 16,011 units. Both are in active product status from Texas Instruments, ensuring continued availability for production requirements.

Q: Are all substitute parts RoHS and REACH compliant?

A: All substitute parts are ROHS3 compliant and REACH unaffected, matching the TS487ID regulatory status. All devices share identical HTSUS classification (8542.33.0001) and ECCN designation (EAR99).