TS419IDT Equivalent & Substitute Parts

Part Overview

The TS419IDT is a Class AB mono amplifier IC manufactured by STMicroelectronics, housed in an 8-SOIC surface mount package. This device delivers 367mW output power at 16Ohm load and operates across a 2V to 5.5V supply voltage range. The TS419IDT is classified as obsolete, necessitating identification of active equivalent components for new designs and production continuity. Substitute parts must maintain electrical compatibility across supply voltage, output power specifications, and package form factor while offering active product status and equivalent feature sets.

Substiute Parts

TS419IDT

STMicroelectronicsIn Stock: 55206TS419IDT Datasheet

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LM4818MX/NOPB

Texas InstrumentsIn Stock: 1267LM4818MX/NOPB Datasheet

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LM4819MX/NOPB

Texas InstrumentsIn Stock: 9913LM4819MX/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TS419IDT is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Class AB amplifier topology
• 1-Channel (Mono) output configuration
• Supply voltage range: 2V ~ 5.5V (must encompass or match the original specification)
• Output power capability at 16Ohm load (minimum 350mW acceptable for equivalent performance)
• Operating temperature range: -40°C ~ 85°C

Mechanical Compatibility Requirements:

• 8-SOIC package form factor with 0.154" (3.90mm) width
• Surface mount mounting type
• Pin-compatible footprint

Compliance Requirements:

• ROHS3 compliance
• Active product status (preferred for long-term availability)

Both identified substitute parts meet these criteria through matching supply voltage specifications, equivalent Class AB topology, identical package geometry, and active product status from Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

LM4818MX/NOPB Selection Criteria: The LM4818MX/NOPB is suitable for applications where single-ended input configuration is acceptable. This device maintains full electrical compatibility with the TS419IDT across supply voltage, operating temperature, and package specifications. Active product status from Texas Instruments ensures long-term availability and manufacturing continuity. Output power specification of 350mW at 16Ohm load is within acceptable tolerance of the original 367mW specification for most audio amplification applications.

LM4819MX/NOPB Selection Criteria: The LM4819MX/NOPB is the preferred substitute when differential input capability is required, matching the TS419IDT feature set. This device incorporates differential inputs identical to the original part, providing direct functional equivalence. Active product status and ROHS3 compliance ensure regulatory conformance and supply chain stability. Output power specification of 350mW at 16Ohm load maintains performance parity with the original device.

Both substitutes are available in active production status, eliminating obsolescence risk associated with the TS419IDT. Selection between LM4818MX/NOPB and LM4819MX/NOPB depends on input configuration requirements within the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can the LM4818MX/NOPB or LM4819MX/NOPB be used as direct replacements for the TS419IDT?

A: Both devices are pin-compatible substitutes within the 8-SOIC package and maintain identical electrical specifications across supply voltage, operating temperature, and output power at 16Ohm load. The LM4819MX/NOPB provides direct feature equivalence including differential inputs. Selection depends on input configuration requirements of the application circuit.

Q: What is the difference between LM4818MX/NOPB and LM4819MX/NOPB?

A: Both devices are Class AB mono amplifiers in 8-SOIC packages with identical supply voltage ranges and operating temperatures. The primary distinction is input configuration: the LM4818MX/NOPB features single-ended inputs, while the LM4819MX/NOPB includes differential inputs. The LM4819MX/NOPB directly matches the TS419IDT differential input feature.

Q: Is there a power output difference between the TS419IDT and the substitute parts?

A: The TS419IDT delivers 367mW at 16Ohm load, while both LM4818MX/NOPB and LM4819MX/NOPB deliver 350mW at the same load impedance. This 17mW difference represents a 4.6% reduction in maximum output power and is within acceptable tolerance for most audio amplification applications.

Q: Are the substitute parts RoHS compliant?

A: Both LM4818MX/NOPB and LM4819MX/NOPB are ROHS3 compliant, matching the compliance status of the TS419IDT. Both devices carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What is the product status of the substitute parts?

A: Both LM4818MX/NOPB and LM4819MX/NOPB are classified as active products from Texas Instruments, ensuring continued manufacturing availability and supply chain stability. The TS419IDT is obsolete, making these active alternatives essential for production continuity.

Q: Are the packages physically identical?

A: All three devices utilize the 8-SOIC package with 0.154" (3.90mm) width specification. The packages are mechanically and electrically compatible for PCB footprint and reflow soldering processes.