TS4990IST Equivalent & Substitute Parts

Part Overview

The TS4990IST is a Class AB mono audio amplifier integrated circuit manufactured by STMicroelectronics. This surface-mount device delivers 1.2W output power at 8Ω load with a supply voltage range of 2.2V to 5.5V. The TS4990IST is classified as an Active product with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified when original inventory is unavailable, when alternative packaging formats are required, or when application-specific performance parameters necessitate component alternatives within the same functional category.

Key Parameters

Parameter	Value
Manufacturer Part Number	TS4990IST
Manufacturer	STMicroelectronics
Category	Linear, Amplifiers
Type	Class AB
Output Type	1-Channel (Mono)
Max Output Power @ 8Ω	1.2W
Voltage - Supply	2.2V ~ 5.5V
Features	Depop, Differential Inputs, Standby, Thermal Protection
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the TS4990IST is determined by the following criteria:

Primary Compatibility Parameters:

Amplifier type: Class AB mono configuration
Package compatibility: 8-pin surface-mount variants (8-TSSOP, 8-MSOP, 8-VSSOP, 8-HVSSOP, 8-uMAX-EP)
Supply voltage range: Minimum 2.2V to 5.5V maximum
Operating temperature range: -40°C to 85°C
Regulatory compliance: RoHS3 compliant, REACH unaffected, EAR99 classification

Secondary Compatibility Parameters:

Output power delivery at specified load impedance
Feature set: Thermal protection and depop functionality
Mounting type: Surface mount only

Substitute parts are grouped based on output power capability and load impedance specifications. Parts with equal or greater output power at the same or lower load impedance are considered direct substitutes. Parts with differential input capability provide functional equivalence to the TS4990IST feature set.

Parameter Comparison

Parameter	TS4990IST	LM4889MM/NOPB	MAX9716EUA+T	TPA6211A1DGN	TPA6211A1DGNR
Manufacturer	STMicroelectronics	Texas Instruments	Analog Devices Inc./Maxim Integrated	Texas Instruments	Texas Instruments
Type	Class AB	Class AB	Class AB	Class AB	Class AB
Output Type	1-Channel (Mono)	1-Channel (Mono)	1-Channel (Mono)	1-Channel (Mono)	1-Channel (Mono)
Max Output Power	1.2W @ 8Ω	1W @ 8Ω	1.4W @ 4Ω	3.1W @ 3Ω	3.1W @ 3Ω
Voltage - Supply	2.2V ~ 5.5V	2.2V ~ 5.5V	2.7V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V
Features	Depop, Differential Inputs, Standby, Thermal Protection	Depop, Shutdown, Thermal Protection	Depop, Differential Inputs, Shutdown, Thermal Protection	Depop, Differential Inputs, Shutdown, Thermal Protection	Depop, Differential Inputs, Shutdown, Thermal Protection
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP Exposed Pad	8-TSSOP, 8-MSOP Exposed Pad	8-TSSOP, 8-MSOP Exposed Pad
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with full RoHS3 compliance and REACH unaffected classification, ensuring regulatory continuity with the TS4990IST.

LM4889MM/NOPB (Texas Instruments): This substitute provides identical supply voltage range (2.2V to 5.5V) and operating temperature specifications. Output power is 1W at 8Ω, which is lower than the TS4990IST specification of 1.2W at 8Ω. This part lacks differential input capability but includes shutdown functionality. Selection is appropriate for applications where 1W output power is sufficient and differential inputs are not required.

MAX9716EUA+T (Analog Devices Inc./Maxim Integrated): This substitute includes differential input capability matching the TS4990IST feature set. Supply voltage minimum is 2.7V, which is higher than the TS4990IST minimum of 2.2V. Output power specification is 1.4W at 4Ω load. Selection is appropriate for applications requiring differential inputs and operating at supply voltages of 2.7V or higher.

TPA6211A1DGN (Texas Instruments): This substitute delivers 3.1W output power at 3Ω load with differential input capability. Supply voltage range is 2.5V to 5.5V. Packaging is Tube format. This part provides higher output power capability and is suitable for applications requiring increased power delivery.

TPA6211A1DGNR (Texas Instruments): This substitute is functionally identical to TPA6211A1DGN with 3.1W output power at 3Ω load and differential input capability. Supply voltage range is 2.5V to 5.5V. Packaging is Cut Tape (CT) & Digi-Reel®, matching the TS4990IST packaging format. This part provides higher output power capability with packaging compatibility to the original part.

Frequently Asked Questions (FAQ)

Q: Can the LM4889MM/NOPB replace the TS4990IST in all applications?

A: The LM4889MM/NOPB is compatible with applications where 1W output power at 8Ω is acceptable. The TS4990IST delivers 1.2W at 8Ω. The LM4889MM/NOPB lacks differential input capability present in the TS4990IST. Compatibility depends on specific application power requirements and input signal configuration.

Q: What is the minimum supply voltage difference between TS4990IST and MAX9716EUA+T?

A: The TS4990IST operates at 2.2V minimum supply voltage, while the MAX9716EUA+T requires 2.7V minimum. Applications operating below 2.7V supply voltage cannot use the MAX9716EUA+T as a substitute.

Q: Are the TPA6211A1DGN and TPA6211A1DGNR functionally equivalent?

A: The TPA6211A1DGN and TPA6211A1DGNR are functionally identical. The difference is packaging format: TPA6211A1DGN is supplied in Tube format, while TPA6211A1DGNR is supplied in Cut Tape (CT) & Digi-Reel® format. Both deliver 3.1W output power at 3Ω load with identical electrical specifications.

Q: Do all substitute parts support differential inputs like the TS4990IST?

A: No. The LM4889MM/NOPB does not include differential input capability. The MAX9716EUA+T, TPA6211A1DGN, and TPA6211A1DGNR all include differential input capability matching the TS4990IST feature set.

Q: What is the package compatibility between TS4990IST and substitute parts?

A: All substitute parts use 8-pin surface-mount packages within the 8-TSSOP and 8-MSOP family (0.118", 3.00mm width). Physical footprint compatibility exists across all listed parts. The MAX9716EUA+T, TPA6211A1DGN, and TPA6211A1DGNR include exposed pad variants, which provide enhanced thermal performance compared to the standard TS4990IST package.

Q: Can the TPA6211A1DGNR be used as a direct replacement for the TS4990IST?

A: The TPA6211A1DGNR is electrically compatible with the TS4990IST and uses identical packaging format (Cut Tape & Digi-Reel®). The TPA6211A1DGNR delivers higher output power (3.1W at 3Ω versus 1.2W at 8Ω) and includes all features of the TS4990IST. Direct replacement is possible with the understanding that the TPA6211A1DGNR provides enhanced performance capability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with REACH unaffected status, maintaining regulatory equivalence with the TS4990IST.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message