MAX4489ASA Equivalent & Substitute Parts

Part Overview

The MAX4489ASA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits with push-pull, rail-to-rail output configuration in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The MAX4489ASA operates across a 2.7V to 5.5V supply range with a 42 MHz gain-bandwidth product and 10V/µs slew rate, making it suitable for general-purpose signal conditioning and amplification applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	MAX4489ASA	—
Manufacturer	Analog Devices Inc./Maxim Integrated	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Push-Pull, Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	10	V/µs
Gain Bandwidth Product	42	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	70	µV
Current - Supply	2.5 (x2 Channels)	mA
Current - Output / Channel	48	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4489ASA is determined by strict alignment of electrical and mechanical parameters within the general-purpose operational amplifier category. The critical substitution criteria are:

Primary Matching Parameters:

Number of circuits: 2 (dual configuration)
Package type: 8-SOIC surface mount
Output configuration: Rail-to-rail capability
Supply voltage range: 2.7V to 5.5V minimum compatibility
Operating temperature range: -40°C to 125°C
Mounting type: Surface mount

Secondary Electrical Considerations:

Gain-bandwidth product: 42 MHz (MAX4489ASA baseline)
Slew rate: 10V/µs (MAX4489ASA baseline)
Input bias current: 1 pA (MAX4489ASA baseline)
Output current capability: 48 mA per channel (MAX4489ASA baseline)

Substitute parts are grouped into two categories: direct packaging variants of the MAX4489ASA base product, and functionally equivalent alternatives from other manufacturers that meet the core electrical and mechanical requirements. Parts with identical electrical specifications but different packaging formats (tube vs. cut tape/reel) are considered direct substitutes. Parts with different electrical characteristics are evaluated for application compatibility based on whether their parameters remain within acceptable operational ranges for typical general-purpose amplifier applications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Number of Circuits	Output Type	Package	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
MAX4489ASA	Analog Devices/Maxim	General Purpose	2	Push-Pull, Rail-to-Rail	8-SOIC	10	42	1	70	2.5	48	2.7	5.5	-40 to 125	Obsolete
MAX4489ASA+	Analog Devices/Maxim	General Purpose	2	Push-Pull, Rail-to-Rail	8-SOIC	10	42	1	70	2.5	48	2.7	5.5	-40 to 125	Active
AD8656ARZ	Analog Devices	CMOS	2	Rail-to-Rail	8-SOIC	11	28	1	50	3.7	220	2.7	5.5	-40 to 125	Active
AD8656ARZ-REEL	Analog Devices	CMOS	2	Rail-to-Rail	8-SOIC	11	28	1	50	3.7	220	2.7	5.5	-40 to 125	Active
AD8656ARZ-REEL7	Analog Devices	CMOS	2	Rail-to-Rail	8-SOIC	11	28	1	50	3.7	220	2.7	5.5	-40 to 125	Active
LMV358ID	Texas Instruments	General Purpose	2	Rail-to-Rail	8-SOIC	1	1	15	1700	0.21	40	2.7	5.5	-40 to 125	Last Time Buy
LMV358IDR	UMW	Voltage Feedback	2	Rail-to-Rail	14-SOIC	—	1	10	800	0.045	25	2.1	5.5	-25 to 85	Active
LMV358IDRG4	Texas Instruments	General Purpose	2	Rail-to-Rail	8-SOIC	1	1	15	1700	0.21	40	2.7	5.5	-40 to 125	Discontinued at DiGi Electronics
LMV358M	Texas Instruments	General Purpose	2	Rail-to-Rail	8-SOIC	1	1	15	1700	0.21	160	2.7	5.5	-40 to 125	Last Time Buy
LMV358M/NOPB	Texas Instruments	General Purpose	2	Rail-to-Rail	8-SOIC	1	1	15	1700	0.21	160	2.7	5.5	-40 to 125	Active
LMV358MX/NOPB	Texas Instruments	General Purpose	2	Rail-to-Rail	8-SOIC	1	1	15	1700	0.21	160	2.7	5.5	-40 to 125	Active

Engineering Selection Recommendations

Tier 1: Direct Substitutes (Identical Electrical Specifications)

MAX4489ASA+ is the primary direct substitute. This part maintains identical electrical characteristics to the MAX4489ASA while offering active product status. The only difference is packaging format (tube vs. standard). This substitution requires no circuit redesign and provides full functional equivalence. Inventory availability is 1202 pieces.

Tier 2: Manufacturer-Recommended Alternatives (Analog Devices Family)

The AD8656ARZ series (AD8656ARZ, AD8656ARZ-REEL, AD8656ARZ-REEL7) represents Analog Devices' recommended substitution path. These CMOS amplifiers maintain the same 8-SOIC package, dual-circuit configuration, and -40°C to 125°C operating range. Key differences include:

Slew rate: 11V/µs (versus 10V/µs)
Gain-bandwidth product: 28 MHz (versus 42 MHz)
Output current capability: 220 mA per channel (versus 48 mA)
Input offset voltage: 50 µV (versus 70 µV)

These parts are suitable for applications where the lower bandwidth is acceptable but higher output current capability is beneficial. All three variants are active products with substantial inventory (6122 to 23300 pieces).

Tier 3: Texas Instruments General-Purpose Alternatives

The LMV358 family (LMV358ID, LMV358IDRG4, LMV358M, LMV358M/NOPB, LMV358MX/NOPB) offers general-purpose amplification in 8-SOIC packages with -40°C to 125°C operating range. These parts exhibit significantly different electrical characteristics:

Slew rate: 1V/µs (versus 10V/µs)
Gain-bandwidth product: 1 MHz (versus 42 MHz)
Supply current: 0.21 mA (versus 2.5 mA)
Input offset voltage: 1.7 mV (versus 70 µV)

LMV358M/NOPB and LMV358MX/NOPB are active products with high inventory availability (1898 and 155100 pieces respectively). These substitutes are appropriate only for low-frequency, low-power applications where bandwidth and slew rate requirements are minimal.

Tier 4: Alternative Package Consideration

LMV358IDR (UMW) uses a 14-SOIC package instead of 8-SOIC, requiring PCB layout modification. Operating temperature range is reduced to -25°C to 85°C. This option is not recommended for direct substitution due to package incompatibility and narrower temperature range.

Compliance and Certification Status

All recommended substitutes maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating. The MAX4489ASA+ and AD8656 series are REACH Unaffected. LMV358M is REACH Affected. All parts carry EAR99 ECCN classification and HTSUS code 8542.33.0001.

Frequently Asked Questions (FAQ)

Q: Can MAX4489ASA+ be used as a direct replacement for MAX4489ASA?

A: Yes. MAX4489ASA+ is electrically and functionally identical to MAX4489ASA. The only difference is packaging format (tube). No circuit modifications are required. Both parts maintain identical electrical specifications across all parameters including slew rate, gain-bandwidth product, supply voltage range, and operating temperature.

Q: What is the key difference between MAX4489ASA and AD8656ARZ?

A: Both are dual-channel, rail-to-rail amplifiers in 8-SOIC packages with identical supply voltage ranges and operating temperatures. The MAX4489ASA offers 42 MHz bandwidth and 10V/µs slew rate, while AD8656ARZ provides 28 MHz bandwidth and 11V/µs slew rate. AD8656ARZ delivers significantly higher output current (220 mA vs. 48 mA per channel) and lower input offset voltage (50 µV vs. 70 µV). AD8656ARZ is suitable for applications requiring higher output drive capability but lower bandwidth.

Q: Why is LMV358 not a direct substitute despite being a dual-channel 8-SOIC amplifier?

A: While LMV358 shares the same package and dual-channel configuration, its electrical performance differs substantially. LMV358 operates at 1 MHz bandwidth with 1V/µs slew rate, compared to MAX4489ASA's 42 MHz and 10V/µs. LMV358 also exhibits 1.7 mV input offset voltage versus 70 µV for MAX4489ASA. These differences make LMV358 unsuitable for high-speed signal conditioning applications. LMV358 is appropriate only for low-frequency, low-power applications.

Q: Are all substitute parts available in the same packaging options?

A: No. MAX4489ASA+ is available in tube packaging. AD8656ARZ variants are available in tube and cut tape/reel formats. LMV358 variants are available in tube and cut tape/reel formats. LMV358IDR uses a different 14-SOIC package. Verify packaging availability for your procurement requirements.

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

A: MAX4489ASA, MAX4489ASA+, AD8656ARZ series, and LMV358 variants (except LMV358IDR) all operate from -40°C to 125°C. LMV358IDR operates from -25°C to 85°C, which is narrower and unsuitable for extended temperature applications.

Q: Which substitute offers the best inventory availability?

A: LMV358MX/NOPB has the highest inventory at 155100 pieces. AD8656ARZ-REEL7 has 23300 pieces. MAX4489ASA+ has 1202 pieces. Inventory levels should be verified with your supplier as quantities change.

Q: Can I use LMV358 in a design originally specified for MAX4489ASA?

A: Only if your application can tolerate significantly reduced bandwidth (1 MHz vs. 42 MHz), slower slew rate (1V/µs vs. 10V/µs), and higher input offset voltage (1.7 mV vs. 70 µV). LMV358 is suitable for DC-coupled, low-frequency signal conditioning. For AC-coupled or high-frequency applications, LMV358 is not appropriate.

Q: What is the difference between AD8656ARZ, AD8656ARZ-REEL, and AD8656ARZ-REEL7?

A: All three variants are electrically identical. The differences are packaging formats: AD8656ARZ is tube packaging, AD8656ARZ-REEL and AD8656ARZ-REEL7 are cut tape with reel formats. Select based on your assembly process requirements. Inventory availability differs: REEL7 has the highest stock at 23300 pieces.

Q: Is the MAX4489ASA still being manufactured?

A: No. MAX4489ASA is classified as obsolete. MAX4489ASA+ is the active product variant from Analog Devices. For new designs, use MAX4489ASA+ or evaluate the recommended alternatives (AD8656 or LMV358 families) based on your application requirements.

Q: What compliance certifications apply to all substitute parts?

A: All recommended substitutes are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating. Verify REACH status for your specific application: MAX4489ASA+, AD8656 series, and most LMV358 variants are REACH Unaffected. LMV358M is REACH Affected. All parts carry EAR99 ECCN classification.

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