MAX492CSA Equivalent & Substitute Parts

Part Overview

The MAX492CSA is a general-purpose operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Analog Devices Inc./Maxim Integrated. This device provides rail-to-rail output capability with a supply voltage range of 2.7 V to 6 V and operates across the industrial temperature range of 0°C to 70°C. The MAX492CSA is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility through matching package type, circuit count, output configuration, and electrical operating parameters within acceptable tolerances.

Key Parameters

Parameter	MAX492CSA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.2	V/µs
Gain Bandwidth Product	500	kHz
Current - Input Bias	25	nA
Voltage - Input Offset	200	µV
Current - Supply (x2 Channels)	150	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6	V
Operating Temperature	0 to 70	°C
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX492CSA are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following mandatory parameters:

Mechanical Compatibility:

Package type: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Number of circuits: 2
Output configuration: Rail-to-Rail

Electrical Compatibility Criteria:

Supply voltage range must encompass or exceed the original 2.7 V to 6 V span
Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel are evaluated for functional equivalence within application-specific tolerances
Operating temperature range must support the original 0°C to 70°C specification or extend beyond it

Compliance Considerations:

Product status (Active vs. Obsolete) affects long-term availability
RoHS compliance status is noted for regulatory requirements
Moisture sensitivity level (MSL) and packaging format (Tube, Tape & Reel, Cut Tape) affect handling and storage

Substitute parts are grouped into two categories: direct equivalents (matching all key parameters) and functional alternatives (meeting core compatibility requirements with parameter variations).

Parameter Comparison

Parameter	MAX492CSA	MAX492CSA+	OPA2313ID	OPA2313IDR	OPA2314AID	OPA2314AIDR	OPA2317ID	OPA2317IDR	OPA2344UA	OPA2344UA/2K5	TLV2452AID	Unit
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	Zero-Drift	Zero-Drift	CMOS	CMOS	General Purpose	—
Number of Circuits	2	2	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	Rail-to-Rail	Rail-to-Rail	—
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	—
Slew Rate	0.2	0.2	0.5	0.5	1.5	1.5	0.15	0.15	0.8	0.8	0.11	V/µs
Gain Bandwidth Product	500	500	1000	1000	3000	3000	300	300	1000	1000	220	kHz
Current - Input Bias	25	25	0.2	0.2	0.2	0.2	275	275	0.2	0.2	500	pA
Voltage - Input Offset	200	200	500	500	500	500	20	20	200	200	300	µV
Current - Supply (x2 Channels)	150	150	50	50	150	150	21	21	150	150	23	µA
Current - Output / Channel	30	30	15	15	20	20	5	5	15	15	10	mA
Voltage - Supply Span (Min)	2.7	2.7	1.8	1.8	1.8	1.8	1.8	1.8	2.5	2.5	2.7	V
Voltage - Supply Span (Max)	6	6	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	6	V
Operating Temperature	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 150	-40 to 150	-40 to 85	-40 to 85	-40 to 125	°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	—
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Direct Equivalent (Packaging Variant):

MAX492CSA+ is the direct successor to MAX492CSA, manufactured by Analog Devices Inc./Maxim Integrated. This part maintains identical electrical specifications (0.2 V/µs slew rate, 500 kHz gain bandwidth product, 150 µA supply current, 30 mA output current per channel) and operates across the same 2.7 V to 6 V supply range. The primary difference is product status: MAX492CSA+ is Active, ensuring continued availability. Additionally, MAX492CSA+ achieves ROHS3 compliance, addressing regulatory requirements for new designs. Packaging is available in Tube format with 1450 units in stock.

Active Substitutes with Enhanced Performance:

OPA2313ID and OPA2313IDR (Texas Instruments) provide improved performance characteristics while maintaining 8-SOIC package compatibility. These parts feature lower input bias current (0.2 pA vs. 25 nA), higher gain bandwidth product (1 MHz vs. 500 kHz), and extended operating temperature range (-40°C to 125°C). Supply voltage range is 1.8 V to 5.5 V, which encompasses the original 2.7 V to 6 V specification at the lower end but reduces the upper limit by 0.5 V. Output current per channel is reduced to 15 mA. Both variants are ROHS3 compliant and Active status. OPA2313ID is available in Tube packaging (10463 units); OPA2313IDR is available in Tape & Reel format (1532 units).

CMOS Alternatives with Higher Bandwidth:

OPA2314AID and OPA2314AIDR (Texas Instruments) are CMOS amplifiers offering significantly higher slew rate (1.5 V/µs vs. 0.2 V/µs) and gain bandwidth product (3 MHz vs. 500 kHz). Input bias current is 0.2 pA. Supply current matches the original at 150 µA per dual-channel configuration. Output current per channel is 20 mA. Operating temperature range extends to -40°C to 125°C. Supply voltage range is 1.8 V to 5.5 V. Both variants are ROHS3 compliant and Active. OPA2314AID is available in Tube packaging (2400 units); OPA2314AIDR is available in Cut Tape & Digi-Reel format (21966 units).

Ultra-Low Power Alternative:

OPA2317ID and OPA2317IDR (Texas Instruments) are zero-drift amplifiers designed for precision applications requiring minimal input offset voltage (20 µV vs. 200 µV). Supply current is significantly reduced to 21 µA per dual-channel configuration. Slew rate is lower at 0.15 V/µs; gain bandwidth product is 300 kHz. Output current per channel is limited to 5 mA. Operating temperature range extends to -40°C to 150°C. Supply voltage range is 1.8 V to 5.5 V. Both variants are ROHS3 compliant and Active. OPA2317ID is available in Tube packaging (7073 units); OPA2317IDR is available in Cut Tape & Digi-Reel format (2900 units).

Low-Power General Purpose Alternative:

OPA2344UA and OPA2344UA/2K5 (Texas Instruments, MicroAmplifier™ series) provide balanced performance with 0.8 V/µs slew rate and 1 MHz gain bandwidth product. Input bias current is 0.2 pA; input offset voltage is 200 µV, matching the original. Supply current is 150 µA per dual-channel configuration; output current per channel is 15 mA. Operating temperature range is -40°C to 85°C. Supply voltage range is 2.5 V to 5.5 V, which reduces the lower limit by 0.2 V compared to the original. Both variants are ROHS3 compliant and Active. OPA2344UA is available in Tube packaging (3016 units); OPA2344UA/2K5 is available in Tape & Reel format (3922 units).

Extended Supply Range Alternative:

TLV2452AID (Texas Instruments) maintains the original 2.7 V to 6 V supply voltage range and general-purpose amplifier classification. This part features lower slew rate (0.11 V/µs vs. 0.2 V/µs) and reduced gain bandwidth product (220 kHz vs. 500 kHz). Input bias current is higher at 500 pA; input offset voltage is 300 µV. Supply current is significantly reduced to 23 µA per dual-channel configuration; output current per channel is 10 mA. Operating temperature range extends to -40°C to 125°C. TLV2452AID is ROHS3 compliant, Active status, and available in Tube packaging with 5,000,300 units in stock.

Frequently Asked Questions (FAQ)

Q: Can MAX492CSA be directly replaced with MAX492CSA+?

A: Yes. MAX492CSA+ is the active production variant of MAX492CSA with identical electrical specifications and 8-SOIC package. The primary advantages are Active product status, ROHS3 compliance, and continued availability. No circuit redesign is required.

Q: What is the key difference between general-purpose and CMOS amplifier substitutes?

A: General-purpose amplifiers (OPA2313, TLV2452) use bipolar input stages, while CMOS amplifiers (OPA2314) use complementary metal-oxide-semiconductor input stages. CMOS variants offer lower input bias current (0.2 pA vs. 25 nA or higher) and higher slew rates, making them suitable for applications requiring faster transient response. CMOS amplifiers are preferred in low-power, high-speed applications.

Q: Does OPA2313ID meet the original supply voltage specification of 2.7 V to 6 V?

A: OPA2313ID operates across 1.8 V to 5.5 V. The lower limit of 1.8 V is below the original 2.7 V minimum, providing additional flexibility. However, the upper limit of 5.5 V is 0.5 V below the original 6 V maximum. Applications requiring operation at 5.5 V to 6 V must use alternatives such as MAX492CSA+, TLV2452AID, or remain with the original part.

Q: What is the significance of zero-drift amplifiers like OPA2317?

A: Zero-drift amplifiers (OPA2317) employ internal chopper-stabilization techniques to achieve extremely low input offset voltage (20 µV vs. 200 µV in general-purpose types). This characteristic is critical for precision measurement, instrumentation, and sensor signal conditioning applications where offset drift over temperature and time must be minimized. Trade-offs include lower slew rate (0.15 V/µs) and reduced output current (5 mA per channel).

Q: Are all substitute parts available in the same packaging formats as MAX492CSA?

A: MAX492CSA is specified with Tube packaging. Substitute parts are available in multiple formats: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®. Selection depends on production volume and assembly equipment compatibility. High-volume production typically uses Tape & Reel or Cut Tape formats; low-volume or prototype applications use Tube packaging.

Q: What is the impact of reduced output current on circuit design?

A: MAX492CSA provides 30 mA output current per channel. Substitutes such as OPA2313ID (15 mA), OPA2314AID (20 mA), OPA2317ID (5 mA), and TLV2452AID (10 mA) have lower output drive capability. Applications requiring direct driving of low-impedance loads or capacitive loads must verify that the substitute's output current is sufficient. Buffer amplifiers or output stages may be required for applications originally designed around 30 mA output capability.

Q: How does operating temperature range affect substitute selection?

A: MAX492CSA operates across 0°C to 70°C (industrial range). Most substitutes extend this range to -40°C to 125°C (automotive/extended industrial) or -40°C to 150°C (OPA2317). Extended temperature range provides design margin for applications subject to temperature extremes but does not affect performance within the original 0°C to 70°C window. Selection should be based on actual application requirements rather than maximum rated specifications.

Q: Is RoHS3 compliance mandatory for substitute selection?

A: RoHS3 compliance is mandatory for new designs destined for European markets and increasingly required by global OEMs. MAX492CSA is RoHS non-compliant. All recommended substitutes (MAX492CSA+, OPA2313, OPA2314, OPA2317, OPA2344, TLV2452) are ROHS3 compliant, ensuring regulatory alignment for production and end-of-life management.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging provides components on continuous carrier tape wound on reels, suitable for high-speed automated assembly. Cut Tape (CT) & Digi-Reel® provides the same tape format but pre-cut into smaller quantities, reducing waste for lower-volume production. Both formats are compatible with standard pick-and-place equipment. Tube packaging is used for manual assembly or low-volume applications.

Q: Can OPA2344UA be used in applications requiring the full 2.7 V to 6 V supply range?

A: OPA2344UA operates across 2.5 V to 5.5 V. The lower limit of 2.5 V is 0.2 V above the original 2.7 V minimum, and the upper limit of 5.5 V is 0.5 V below the original 6 V maximum. Applications requiring operation below 2.5 V or above 5.5 V must use alternatives such as MAX492CSA+, TLV2452AID, or OPA2313ID (for lower voltages only).

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