TS4890ID Equivalent & Substitute Parts

Part Overview

The TS4890ID is a Class AB mono audio power amplifier IC manufactured by STMicroelectronics, housed in an 8-SOIC surface mount package. This device delivers 1 watt of output power at 8 ohms and operates across a 2.5V to 5.5V supply voltage range. The TS4890ID incorporates depop, standby, and thermal protection features for robust audio amplification applications.

The TS4890ID is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for applications utilizing this amplifier topology.

Substiute Parts

TS4890ID

STMicroelectronicsIn Stock: 2373TS4890ID Datasheet

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LM4889MA/NOPB

National SemiconductorIn Stock: 1301LM4889MA/NOPB Datasheet

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LM4890M/NOPB

Texas InstrumentsIn Stock: 1451LM4890M/NOPB Datasheet

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LM4890MX/NOPB

Texas InstrumentsIn Stock: 23401LM4890MX/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TS4890ID are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Amplifier classification: Class AB topology
• Output configuration: Single-channel mono operation
• Output power rating: 1 watt at 8 ohm load
• Package format: 8-SOIC surface mount
• Physical dimensions: 0.154" width, 3.90mm width
• Operating temperature range: -40°C to 85°C
• Thermal protection capability

All substitute parts listed maintain identical electrical performance specifications and physical package compatibility with the TS4890ID. Supply voltage ranges for substitute parts extend to 2.2V minimum, providing broader operational flexibility while remaining compatible with the original 2.5V to 5.5V specification window.

Parameter Comparison

Engineering Selection Recommendations

LM4890MX/NOPB (Texas Instruments) is the primary substitute for the TS4890ID. This part maintains full electrical and mechanical compatibility while offering active product status, ensuring long-term availability and supply chain stability. The LM4890MX/NOPB is supplied in Cut Tape and Digi-Reel packaging formats with 23,300 units in current inventory. RoHS3 compliance and REACH unaffected status align with the original part's regulatory certifications.

LM4890M/NOPB (Texas Instruments) serves as a secondary substitute, providing identical electrical specifications and package compatibility. This variant is supplied in tube packaging with 1,425 units available. RoHS3 compliance and regulatory certifications match the primary substitute.

LM4889MA/NOPB (National Semiconductor) functions as an alternative substitute with equivalent electrical performance and 8-SOIC package compatibility. This part is supplied in bulk packaging with 1,245 units in inventory. The Boomer® series designation indicates proven audio amplifier performance characteristics. Regulatory compliance information for this variant is limited to ECCN and HTSUS classifications.

All three substitute parts are active products with established supply chains, contrasting with the obsolete status of the TS4890ID. Selection among these substitutes should be based on packaging format requirements, inventory availability, and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the LM4890MX/NOPB directly replace the TS4890ID in existing PCB designs?

A: Yes. The LM4890MX/NOPB maintains identical 8-SOIC package dimensions (0.154" × 3.90mm), pin configuration, and electrical specifications. No PCB layout modifications are required for direct substitution.

Q: What is the difference between the three substitute parts?

A: The three substitutes—LM4890MX/NOPB, LM4890M/NOPB, and LM4889MA/NOPB—are electrically equivalent with identical output power, supply voltage ranges, and operating temperature specifications. Primary differences are manufacturer (Texas Instruments versus National Semiconductor), packaging format (Cut Tape/Digi-Reel, tube, or bulk), and inventory availability.

Q: Are the substitute parts RoHS3 compliant?

A: The LM4890MX/NOPB and LM4890M/NOPB are explicitly RoHS3 compliant. The LM4889MA/NOPB compliance status is not specified in available documentation.

Q: Does the extended supply voltage range of substitute parts (2.2V minimum) affect compatibility?

A: No. The substitute parts' 2.2V to 5.5V supply voltage range encompasses the original TS4890ID specification of 2.5V to 5.5V. Designs operating within the original 2.5V to 5.5V window remain fully compatible.

Q: Which substitute part offers the best availability?

A: The LM4890MX/NOPB provides the highest inventory level at 23,300 units, followed by LM4890M/NOPB at 1,425 units and LM4889MA/NOPB at 1,245 units.

Q: Are thermal protection features identical across all parts?

A: Yes. All substitute parts incorporate thermal protection. The TS4890ID specifies thermal protection as a feature. Substitute parts maintain this protection capability across their operating temperature ranges.

Q: What packaging options are available for substitutes?

A: LM4890MX/NOPB is supplied in Cut Tape and Digi-Reel formats. LM4890M/NOPB is supplied in tube packaging. LM4889MA/NOPB is supplied in bulk packaging. Selection depends on production volume and assembly process requirements.