MAX4477ASA Equivalent & Substitute Parts Reference

Part Overview

The MAX4477ASA 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 equivalent and substitute components for ongoing design support and production continuity. The MAX4477ASA operates across a 2.7V to 5.5V supply range with a 10 MHz gain-bandwidth product and 3V/µs slew rate, making it suitable for general-purpose amplification applications requiring moderate speed and low input bias current.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	MAX4477ASA	—
Manufacturer	Analog Devices Inc./Maxim Integrated	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Push-Pull, Rail-to-Rail	—
Slew Rate	3	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	70	µV
Current - Supply (x2 Channels)	2.5	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
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4477ASA is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Package type: 8-SOIC surface mount form factor
Number of circuits: Dual (2) operational amplifiers
Output configuration: Rail-to-rail capability
Supply voltage range: Minimum 2.7V, maximum 5.5V
Operating temperature range: -40°C to 125°C
Mounting type: Surface mount

Secondary Compatibility Parameters:

Slew rate: 3V/µs (MAX4477ASA specification)
Gain bandwidth product: 10 MHz (MAX4477ASA specification)
Input bias current: 1 pA (MAX4477ASA specification)
Input offset voltage: 70 µV (MAX4477ASA specification)
Output current per channel: 48 mA (MAX4477ASA specification)

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Identical Electrical Performance): MAX4477ASA+ represents the active production equivalent with identical electrical specifications and 8-SOIC packaging. This part maintains all performance parameters of the obsolete MAX4477ASA.

Category 2 - Functional Substitutes (Compatible but Different Performance): LMV358 series parts (LMV358ID, LMV358IDR, LMV358IDRG4, LMV358M, LMV358M/NOPB, LMV358MX/NOPB, LMV358QD, LMV358QDR) and LMV822AIDT operate within the same 2.7V to 5.5V supply range and 8-SOIC package, but exhibit reduced slew rate (1V/µs to 1.9V/µs) and lower gain-bandwidth product (1 MHz to 5.5 MHz). These parts are suitable for applications where the MAX4477ASA's higher speed performance is not required.

LMV358IDR from UMW is listed with a 14-SOP package designation, which differs from the 8-SOIC standard and requires PCB layout modification.

Parameter Comparison

Part Number	Manufacturer	Package	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV/mV)	Supply Current (µA/mA)	Output Current (mA)	Product Status
MAX4477ASA	Analog Devices	8-SOIC	3	10	1 pA	70 µV	2.5 mA	48	Obsolete
MAX4477ASA+	Analog Devices	8-SOIC	3	10	1 pA	70 µV	2.5 mA	48	Active
LMV358ID	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	40	Last Time Buy
LMV358IDR	UMW	14-SOP	—	1	10 pA	800 µV	45 µA	25	Active
LMV358IDRG4	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	40	Discontinued
LMV358M	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	160	Last Time Buy
LMV358M/NOPB	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	160	Active
LMV358MX/NOPB	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	160	Active
LMV358QD	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	40	Last Time Buy
LMV358QDR	Texas Instruments	8-SOIC	1	1	15 nA	1.7 mV	210 µA	40	Active
LMV822AIDT	STMicroelectronics	8-SOIC	1.9	5.5	60 nA	800 µV	300 µA	70	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Performance):

MAX4477ASA+ is the recommended direct equivalent. This part maintains all electrical specifications of the obsolete MAX4477ASA while offering active product status. Both parts are ROHS3 compliant, MSL Level 1, and operate across the identical -40°C to 125°C temperature range. The MAX4477ASA+ is available in tube packaging with 1120 units in stock.

For Functional Substitution (Performance Trade-offs Acceptable):

When the MAX4477ASA's 3V/µs slew rate and 10 MHz gain-bandwidth product are not critical to application performance, the LMV358 series provides viable alternatives with active or extended product availability:

LMV358M/NOPB (Texas Instruments, Active status): Offers the highest output current capability (160 mA per channel) among LMV358 variants, suitable for applications requiring higher drive capability. ROHS3 compliant, MSL Level 1, 1898 units in stock.
LMV358MX/NOPB (Texas Instruments, Active status): Identical electrical specifications to LMV358M/NOPB with superior inventory availability (155,100 units). Recommended for high-volume production requiring extended supply assurance.
LMV358QDR (Texas Instruments, Active status): Provides 40 mA output current per channel with active product status. ROHS3 compliant, MSL Level 1, suitable for applications with moderate output current requirements.
LMV822AIDT (STMicroelectronics, Active status): Offers intermediate performance between MAX4477ASA and standard LMV358 parts, with 1.9V/µs slew rate and 5.5 MHz gain-bandwidth product. Includes automotive-grade qualification (AEC-Q100) and 70 mA output current per channel. Recommended for automotive or industrial applications requiring enhanced reliability.

Parts to Avoid:

LMV358IDR (UMW): Package designation (14-SOP) differs from standard 8-SOIC, requiring PCB redesign.
LMV358ID, LMV358IDRG4, LMV358QD: Last Time Buy or Discontinued status indicates limited future availability.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 moisture sensitivity, and -40°C to 125°C operating temperature range compatibility with the original MAX4477ASA specification.

Frequently Asked Questions (FAQ)

Q1: Can LMV358 series parts directly replace MAX4477ASA in existing designs?

A: LMV358 series parts are pin-compatible and package-compatible (8-SOIC) with MAX4477ASA, but exhibit different electrical performance. The LMV358 family operates with 1V/µs slew rate and 1 MHz gain-bandwidth product compared to MAX4477ASA's 3V/µs and 10 MHz specifications. Direct substitution is acceptable only if the application does not depend on the higher speed performance of the MAX4477ASA. Circuit simulation or bench testing is necessary to confirm functional equivalence in specific applications.

Q2: What is the difference between MAX4477ASA and MAX4477ASA+?

A: MAX4477ASA+ is the active production equivalent of the obsolete MAX4477ASA. Both parts share identical electrical specifications, 8-SOIC packaging, and operating parameters. The primary difference is product status: MAX4477ASA is obsolete, while MAX4477ASA+ is actively manufactured. MAX4477ASA+ is the preferred choice for new designs and production continuity.

Q3: Why do LMV358 variants show different output current ratings?

A: Output current capability varies among LMV358 package and temperature grade variants. LMV358M and LMV358M/NOPB specify 160 mA per channel, while LMV358ID, LMV358QD, and LMV358QDR specify 40 mA per channel. Selection depends on application output current requirements. Higher output current variants (160 mA) are suitable for driving heavier loads or lower impedance circuits.

Q4: Is LMV358IDR compatible with MAX4477ASA?

A: LMV358IDR is not recommended as a direct substitute. While it provides dual rail-to-rail operational amplifiers, the package designation (14-SOP) differs from the standard 8-SOIC package of MAX4477ASA. This package difference requires PCB layout modification and may not fit existing socket configurations. Use LMV358ID, LMV358IDRG4, or other 8-SOIC variants instead.

Q5: What is the significance of "Last Time Buy" product status?

A: "Last Time Buy" status indicates that the manufacturer has announced end-of-life for the part, with a final purchase window before discontinuation. Parts with this status (LMV358ID, LMV358M, LMV358QD) have limited remaining availability. For new designs or long-term production, select parts with "Active" status such as LMV358M/NOPB, LMV358MX/NOPB, LMV358QDR, or LMV822AIDT.

Q6: Why is LMV822AIDT listed as an alternative despite different performance specifications?

A: LMV822AIDT is included as a functional alternative for applications where intermediate performance between MAX4477ASA and standard LMV358 is beneficial. With 1.9V/µs slew rate and 5.5 MHz gain-bandwidth product, LMV822AIDT bridges the performance gap. Additionally, LMV822AIDT carries automotive-grade qualification (AEC-Q100), making it suitable for automotive and industrial applications requiring enhanced reliability standards.

Q7: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed in this reference are ROHS3 compliant and MSL Level 1 (unlimited moisture sensitivity). This ensures environmental compliance and handling compatibility with modern manufacturing processes. Verify specific compliance requirements for your application or regional regulations.

Q8: What supply voltage range is common across all substitute parts?

A: All substitute parts operate within the 2.7V to 5.5V supply voltage range, matching the MAX4477ASA specification. This ensures direct compatibility in power supply designs. However, verify specific minimum supply voltage requirements for LMV358IDR (2.1V minimum), which offers slightly lower minimum voltage operation.

Q9: How do input bias current differences affect circuit design?

A: MAX4477ASA specifies 1 pA input bias current, while LMV358 variants specify 15 nA and LMV822AIDT specifies 60 nA. Higher input bias current increases input offset voltage drift and may require larger input impedances or bias current compensation networks. For high-impedance input circuits, MAX4477ASA's lower bias current is advantageous. For general-purpose applications, LMV358 series performance is acceptable.

Q10: What is the operating temperature range for all parts?

A: MAX4477ASA and most substitute parts operate across -40°C to 125°C. LMV358IDR (UMW) operates across a narrower range of -25°C to 85°C. For applications requiring full -40°C to 125°C operation, avoid LMV358IDR and select alternatives with extended temperature specifications.

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