MAX474CSA+ Equivalent & Substitute Parts Reference

Part Overview

The MAX474CSA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a dual-channel (2 circuit) rail-to-rail output amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and production continuity.

The MAX474CSA+ operates across a supply voltage range of 2.7 V to 5.25 V with a slew rate of 17 V/µs and gain bandwidth product of 12 MHz. The obsolete status of this part requires engineers to evaluate active alternatives that maintain functional compatibility while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	17	V/µs
Gain Bandwidth Product	12	MHz
Current - Input Bias	80	nA
Voltage - Input Offset	700	µV
Current - Supply (per channel)	2	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.25	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MAX474CSA+ is determined by the following critical parameters:

Primary Compatibility Criteria:

Dual-channel (2 circuit) configuration
Rail-to-rail output capability
8-SOIC package form factor (0.154", 3.90mm width)
Surface mount technology
Supply voltage range compatibility (minimum 2.7 V, maximum ≥5.25 V)
Operating temperature range (minimum ≤0°C, maximum ≥70°C)

Secondary Performance Criteria:

Slew rate ≥17 V/µs (or lower if application permits)
Gain bandwidth product ≥12 MHz (or lower if application permits)
Input bias current ≤80 nA (or higher if application permits)
Input offset voltage ≤700 µV (or lower if application permits)
Supply current per channel ≤2 mA (or higher if application permits)

Substitute parts are grouped into two categories: Direct Replacements (Analog Devices AD8692 series) and Functional Alternatives (Texas Instruments LME49721 and LMV722 series, Rohm Semiconductor BU7442 series). Each substitute maintains the dual-channel, rail-to-rail, 8-SOIC configuration while offering active product status and enhanced compliance certifications.

Parameter Comparison

Parameter	MAX474CSA+	AD8692ARZ	AD8692ARZ-REEL	AD8692ARZ-REEL7	LME49721MA/NOPB	LME49721MAX/NOPB	LMV722ID	LMV722IDR	LMV722M
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	Audio	Audio	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	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	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	17	5	5	5	8.5	8.5	5.25	5.25	5.25
Gain Bandwidth Product (MHz)	12	10	10	10	20	20	10	10	10
Current - Input Bias (pA/nA)	80 nA	1 pA	1 pA	1 pA	0.04 pA	0.04 pA	260 nA	260 nA	260 nA
Voltage - Input Offset (µV)	700	400	400	400	300	300	80	80	80
Current - Supply per Channel (mA)	2	0.95	0.95	0.95	2.15	2.15	1.81	1.81	2.01
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.2	2.2	2.2	2.2	2.2
Voltage - Supply Span Max (V)	5.25	6	6	6	5.5	5.5	5.5	5.5	5.5
Operating Temperature (°C)	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 105	-40 to 105	-40 to 85
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant

Engineering Selection Recommendations

Recommended Primary Substitutes:

The AD8692ARZ series (AD8692ARZ, AD8692ARZ-REEL, AD8692ARZ-REEL7) represents the most direct functional replacement for the MAX474CSA+. All three variants share identical electrical specifications and are manufactured by Analog Devices Inc., the current owner of the Maxim Integrated product line. These parts maintain dual-channel, rail-to-rail configuration in 8-SOIC packaging with active product status and ROHS3 compliance. The AD8692ARZ-REEL7 variant offers the highest inventory availability (17,600 pcs) with Cut Tape & Digi-Reel® packaging.

Secondary Substitutes:

The Texas Instruments LME49721 series (LME49721MA/NOPB and LME49721MAX/NOPB) provides enhanced performance characteristics, including higher gain bandwidth product (20 MHz versus 12 MHz) and superior input bias current (0.04 pA versus 80 nA). These audio-grade amplifiers are suitable for applications requiring improved signal fidelity. Both variants are active products with ROHS3 compliance and extended operating temperature ranges.

The Texas Instruments LMV722 series (LMV722ID, LMV722IDR, LMV722M) offers general-purpose amplification with the lowest input offset voltage (80 µV) among all substitutes. The LMV722IDR variant provides the highest inventory (25,300 pcs) with active status and ROHS3 compliance. The LMV722M variant includes automotive-grade qualification (AEC-Q100) but carries RoHS non-compliance status and REACH-affected designation, limiting its use in new commercial designs.

Not Recommended:

The Rohm Semiconductor BU7442 series (BU7442F-E2 and BU7442SF-E2) exhibits significantly reduced performance specifications (slew rate 0.3 V/µs, gain bandwidth product 600 kHz) and does not meet the electrical requirements of the MAX474CSA+. These CMOS amplifiers are suitable only for low-frequency applications and should not be selected as direct replacements.

Frequently Asked Questions (FAQ)

Q: Can the AD8692ARZ directly replace the MAX474CSA+ without circuit modifications?

A: The AD8692ARZ maintains electrical and mechanical compatibility within the specified parameter ranges. The 8-SOIC package pinout is identical, and all critical parameters (dual-channel, rail-to-rail output, supply voltage range 2.7 V to 6 V) are compatible. However, the reduced slew rate (5 V/µs versus 17 V/µs) and lower gain bandwidth product (10 MHz versus 12 MHz) may affect high-frequency performance. Circuit validation is required for applications operating near the original performance limits.

Q: What is the difference between AD8692ARZ, AD8692ARZ-REEL, and AD8692ARZ-REEL7?

A: These three part numbers represent identical electrical devices with different packaging and delivery formats. AD8692ARZ is supplied in Tube packaging. AD8692ARZ-REEL and AD8692ARZ-REEL7 are supplied in Cut Tape & Digi-Reel® format. The AD8692ARZ-REEL7 variant offers higher inventory availability. Selection depends on procurement volume and assembly line requirements.

Q: Why is the LMV722M not recommended despite automotive qualification?

A: The LMV722M carries RoHS non-compliant status and REACH-affected designation. While it includes AEC-Q100 automotive qualification, its regulatory status restricts use in new commercial and consumer product designs. The LMV722ID and LMV722IDR variants provide equivalent electrical performance with full ROHS3 compliance and are preferred for new designs.

Q: Can the LME49721 series be used in general-purpose applications, or is it limited to audio?

A: The LME49721 series is classified as audio-grade amplifiers but functions as general-purpose dual-channel rail-to-rail amplifiers. The audio designation reflects optimized performance characteristics (lower noise, higher bandwidth) rather than functional limitation. These parts are suitable for general-purpose applications and provide superior performance compared to the MAX474CSA+ in high-frequency and low-noise requirements.

Q: What is the significance of the operating temperature range difference between substitutes?

A: The MAX474CSA+ operates from 0°C to 70°C. The AD8692ARZ series extends this to -40°C to 125°C, and the LMV722 series to -40°C to 105°C. Extended temperature ranges provide design flexibility for industrial and automotive applications. For commercial applications limited to 0°C to 70°C operation, all substitutes remain compatible. Temperature derating curves must be consulted for applications approaching the upper temperature limits.

Q: Are there pinout differences between the MAX474CSA+ and substitute parts?

A: All substitute parts maintain the standard 8-SOIC dual operational amplifier pinout configuration. The MAX474CSA+, AD8692ARZ series, LME49721 series, and LMV722 series share identical pin assignments. Direct socket substitution is mechanically and electrically feasible without PCB modifications.

Q: What inventory considerations should guide substitute selection?

A: The AD8692ARZ-REEL7 offers the highest inventory (17,600 pcs), followed by LME49721MAX/NOPB (92,900 pcs) and LMV722IDR (25,300 pcs). For high-volume production, these variants ensure supply continuity. The original MAX474CSA+ maintains 1,089 pcs inventory but carries obsolete status, indicating no future production. New designs should transition to active products immediately.

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