MAX4474ESA-T Equivalent & Substitute Parts

Part Overview

The MAX4474ESA-T is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a dual-channel (2 circuit) rail-to-rail output device in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute components necessary for new designs and production continuity.

The MAX4474ESA-T operates across a supply voltage range of 1.8 V to 5.5 V with an operating temperature range of -40°C to 85°C. Its primary application domain includes low-power, general-purpose amplification circuits where rail-to-rail output capability is required.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	0.02	V/µs
Gain Bandwidth Product	40	kHz
Current - Input Bias	200	pA
Voltage - Input Offset	500	µV
Current - Supply	750	nA (x2 Channels)
Current - Output / Channel	36	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the MAX4474ESA-T is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Dual-channel (2 circuit) configuration
Rail-to-rail output capability
8-SOIC surface mount package (0.154", 3.90mm width)
Supply voltage range: minimum 1.8 V, maximum 5.5 V
Operating temperature range: -40°C to 85°C (or extended)
ROHS3 compliance

Performance Parameters (Secondary):

Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel may vary within acceptable design margins depending on application requirements

Substitute parts are grouped into two categories:

Category A - Direct Package & Pinout Equivalents (8-SOIC, 0.154" width):

NCS20032DR2G (onsemi)
NCV20032DR2G (onsemi)
OPA2349UA/2K5 (Texas Instruments)
RE46C312S8F (Microchip Technology)
TLV342AIDR (Texas Instruments)
TLV342IDR (Texas Instruments)
TLV342AID (Texas Instruments)
TLV342ID (Texas Instruments)

Category B - Alternative Package Format (8-SOP, 0.173" width):

LMR932F-GE2 (Rohm Semiconductor) — requires PCB layout adjustment due to different package width

Parameter Comparison

Parameter	MAX4474ESA-T	NCS20032DR2G	NCV20032DR2G	OPA2349UA/2K5	RE46C312S8F	TLV342AIDR	LMR932F-GE2
Manufacturer	Analog Devices	onsemi	onsemi	Texas Instruments	Microchip	Texas Instruments	Rohm
Amplifier Type	General Purpose	General Purpose	General Purpose	CMOS	General Purpose	CMOS	General Purpose
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.02	8	8	0.02	0.003	1	0.35
Gain Bandwidth Product (kHz)	40	7000	7000	70	10	2300	1400
Current - Input Bias (pA)	200	1	1	0.5	—	1	5
Voltage - Input Offset (µV)	500	500	500	2000	3000	300	1000
Current - Supply (µA, x2 Channels)	0.75	275	275	1	0.6	75	140
Current - Output / Channel (mA)	36	96	14	8	27	115	90
Voltage - Supply Span Min (V)	1.8	1.7	1.7	1.8	1.8	1.5	1.8
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5.5	5.5	5
Operating Temperature (°C)	-40 to 85	-40 to 125	-40 to 125	-40 to 70	-10 to 60	-40 to 125	-40 to 85
Package / Case	8-SOIC (0.154")	8-SOIC (0.154")	8-SOIC (0.154")	8-SOIC (0.154")	8-SOIC (0.154")	8-SOIC (0.154")	8-SOP (0.173")
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

NCS20032DR2G and NCV20032DR2G (onsemi) are the most direct functional replacements. Both are active products with identical 8-SOIC (0.154") packaging, extended operating temperature range (-40°C to 125°C), and ROHS3 compliance. These parts offer significantly improved performance characteristics (8 V/µs slew rate, 7 MHz gain bandwidth product, 1 pA input bias current) while maintaining the same supply voltage range and package footprint. The primary distinction between NCS20032DR2G and NCV20032DR2G is output current per channel (96 mA vs. 14 mA), with NCS20032DR2G providing higher drive capability.

TLV342AIDR and TLV342IDR (Texas Instruments) are active products offering extended temperature range (-40°C to 125°C), identical 8-SOIC packaging, and ROHS3 compliance. These CMOS amplifiers provide superior slew rate (1 V/µs) and gain bandwidth product (2.3 MHz) with significantly lower supply current (75 µA). The lower operating temperature minimum (1.5 V) provides additional design margin.

OPA2349UA/2K5 (Texas Instruments) is an active CMOS product with identical 8-SOIC packaging and ROHS3 compliance. It matches the slew rate and gain bandwidth product of the MAX4474ESA-T (0.02 V/µs, 70 kHz) with extremely low supply current (1 µA). However, the operating temperature range is limited to -40°C to 70°C, and moisture sensitivity level is 2 (1 Year), requiring controlled storage conditions.

RE46C312S8F (Microchip Technology) is an active product with identical 8-SOIC packaging and ROHS3 compliance. It provides very low slew rate (0.003 V/µs) and gain bandwidth product (10 kHz), suitable for applications requiring minimal bandwidth. Operating temperature range is limited to -10°C to 60°C.

Secondary Substitute (Package Variant):

LMR932F-GE2 (Rohm Semiconductor) is an active product with ROHS3 compliance and identical supply voltage range. However, it uses an 8-SOP package (0.173" width) instead of 8-SOIC (0.154" width), requiring PCB layout modification. The maximum supply voltage is 5 V (vs. 5.5 V for the main part). This option is suitable only when PCB redesign is acceptable.

Obsolete Status Alternatives:

TLV342AID and TLV342ID (Texas Instruments) are classified as Last Time Buy, indicating production discontinuation is planned. While currently available, these should not be selected for new long-term production designs.

Frequently Asked Questions (FAQ)

Q1: Can NCS20032DR2G or NCV20032DR2G be used as direct drop-in replacements for MAX4474ESA-T?

A: Yes, both onsemi parts are direct drop-in replacements from a package and pinout perspective. They share identical 8-SOIC (0.154", 3.90mm width) packaging, dual-channel configuration, rail-to-rail output, and supply voltage range (1.8 V to 5.5 V). Both are active products with ROHS3 compliance and unlimited moisture sensitivity. The primary differences are performance enhancements (higher slew rate, gain bandwidth product, and lower input bias current), which are generally beneficial for most applications. The distinction between NCS20032DR2G (96 mA output per channel) and NCV20032DR2G (14 mA output per channel) depends on your circuit's output current requirements.

Q2: What is the key difference between the MAX4474ESA-T and TLV342AIDR?

A: Both are dual-channel, rail-to-rail operational amplifiers in 8-SOIC packaging with ROHS3 compliance. The MAX4474ESA-T is a general-purpose amplifier with very low slew rate (0.02 V/µs) and 40 kHz gain bandwidth product, optimized for low-power applications. The TLV342AIDR is a CMOS amplifier with significantly higher performance (1 V/µs slew rate, 2.3 MHz gain bandwidth product) and lower supply current (75 µA vs. 750 nA). The TLV342AIDR also offers extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). Selection depends on whether your application requires the higher bandwidth and temperature range of the TLV342AIDR or the lower power consumption of the MAX4474ESA-T.

Q3: Why is OPA2349UA/2K5 listed as a substitute if its operating temperature range is only -40°C to 70°C?

A: OPA2349UA/2K5 is included because it meets the core substitution criteria: dual-channel configuration, rail-to-rail output, 8-SOIC packaging, and supply voltage range of 1.8 V to 5.5 V. However, the reduced operating temperature range (-40°C to 70°C vs. -40°C to 85°C) makes it unsuitable for applications requiring operation above 70°C. Additionally, its moisture sensitivity level is 2 (1 Year), requiring controlled storage. This part is recommended only for applications operating within -40°C to 70°C and where moisture-controlled storage is available.

Q4: Can LMR932F-GE2 be used without PCB modification?

A: No. LMR932F-GE2 uses an 8-SOP package (0.173" width) instead of the 8-SOIC package (0.154" width) of the MAX4474ESA-T. While the pinout is compatible, the different package width requires PCB footprint redesign. Additionally, the maximum supply voltage is 5 V instead of 5.5 V. This part should be considered only when PCB layout modification is acceptable and your circuit operates within the 5 V maximum supply limit.

Q5: What are the moisture sensitivity implications for substitute parts?

A: Most substitute parts (NCS20032DR2G, NCV20032DR2G, RE46C312S8F, TLV342AIDR, TLV342IDR, TLV342AID, TLV342ID, LMR932F-GE2) have Moisture Sensitivity Level 1 (Unlimited), identical to the MAX4474ESA-T. This means no special moisture-controlled storage is required. OPA2349UA/2K5 has Moisture Sensitivity Level 2 (1 Year), requiring storage in moisture-controlled conditions and baking before reflow soldering. Verify your supply chain and manufacturing processes can accommodate MSL 2 requirements before selecting OPA2349UA/2K5.

Q6: Which substitute offers the best performance improvement over MAX4474ESA-T?

A: NCS20032DR2G and NCV20032DR2G offer the most significant performance improvements: 8 V/µs slew rate (400× faster), 7 MHz gain bandwidth product (175× higher), and 1 pA input bias current (200× lower). These improvements are beneficial for high-speed signal conditioning, precision measurement, and low-noise applications. However, the higher supply current (275 µA vs. 750 nA) may impact battery-powered designs. For applications where bandwidth is less critical, TLV342AIDR provides a balanced improvement with moderate slew rate (1 V/µs) and lower supply current (75 µA).

Q7: Is RE46C312S8F suitable for all applications requiring MAX4474ESA-T replacement?

A: No. RE46C312S8F has the lowest slew rate (0.003 V/µs) and gain bandwidth product (10 kHz) among all substitutes, making it unsuitable for applications requiring higher bandwidth. Additionally, its operating temperature range is limited to -10°C to 60°C, which is narrower than the MAX4474ESA-T (-40°C to 85°C). RE46C312S8F is recommended only for ultra-low-power, low-bandwidth applications operating within -10°C to 60°C.

Q8: What is the product status significance for long-term production?

A: The MAX4474ESA-T is classified as Obsolete, meaning production has ended and future availability is uncertain. All recommended substitutes are classified as Active, ensuring continued availability for new production. TLV342AID and TLV342ID are classified as Last Time Buy, indicating production discontinuation is planned; these should not be selected for new designs requiring long-term supply. For new designs, prioritize NCS20032DR2G, NCV20032DR2G, TLV342AIDR, TLV342IDR, or OPA2349UA/2K5.

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