MAX492CSA-T Equivalent & Substitute Parts Reference

Part Overview

The MAX492CSA-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 amplifier in 8-SOIC surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MAX492CSA-T operates across a 2.7 V to 6 V supply range with a slew rate of 0.2 V/µs and 500 kHz gain bandwidth product, suitable for general purpose signal conditioning and amplification applications in low-voltage systems.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	0.2	V/µs
Gain Bandwidth Product	500	kHz
Current - Input Bias	25	nA
Voltage - Input Offset	200	µV
Current - Supply (per Channel)	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
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX492CSA-T is determined by strict alignment of electrical and mechanical parameters within the 8-SOIC package form factor. The critical substitution criteria are:

Primary Compatibility Parameters:

Dual-channel (2 circuit) configuration
Rail-to-rail output capability
8-SOIC surface mount package (0.154", 3.90mm Width)
Supply voltage range compatibility (minimum 2.7 V, maximum 6 V overlap required)
Operating temperature range (0°C to 70°C minimum coverage)

Secondary Electrical Parameters:

Slew rate (0.2 V/µs baseline; higher values acceptable)
Gain bandwidth product (500 kHz baseline; higher values acceptable)
Input bias current (25 nA baseline; lower values acceptable)
Input offset voltage (200 µV baseline; equal or lower values acceptable)
Output current capability (30 mA per channel baseline; equal or higher values acceptable)

Substitute parts are grouped into two categories based on amplifier type: General Purpose amplifiers (matching MAX492 functional class) and CMOS amplifiers (enhanced performance variants). All substitutes maintain identical package geometry and surface mount compatibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
MAX492CSA-T	Analog Devices	General Purpose	0.2	500	25	200	150	30	2.7	6	0 to 70	Obsolete
MAX492CSA+T	Analog Devices	General Purpose	0.2	500	25	200	150	30	2.7	6	0 to 70	Active
OPA2344UA/2K5	Texas Instruments	CMOS	0.8	1000	0.0002	200	150	15	2.5	5.5	-40 to 85	Active
OPA2344UA	Texas Instruments	CMOS	0.8	1000	0.0002	200	150	15	2.5	5.5	-40 to 85	Active
TLV2262AID	Texas Instruments	CMOS	0.55	710	1	300	400	50	2.7	8	-40 to 125	Active
TLV2262AIDR	Texas Instruments	CMOS	0.55	710	1	300	400	50	2.7	8	-40 to 125	Active
TLV2452AID	Texas Instruments	General Purpose	0.11	220	500	300	23	10	2.7	6	-40 to 125	Active
TLV2452AIDR	Texas Instruments	General Purpose	0.11	220	500	300	23	10	2.7	6	-40 to 125	Active
TLV2452CD	Texas Instruments	General Purpose	0.11	220	500	300	23	10	2.7	6	0 to 70	Active
TLV2452CDR	Texas Instruments	General Purpose	0.11	220	500	300	23	10	2.7	6	0 to 70	Active
TLV2452ID	Texas Instruments	General Purpose	0.11	220	500	300	23	10	2.7	6	-40 to 125	Active

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

MAX492CSA+T is the direct active equivalent to MAX492CSA-T. Both parts share identical electrical specifications, package geometry, and operating parameters. This part is recommended as the primary replacement for obsolete MAX492CSA-T inventory, with active product status ensuring long-term availability and supply chain continuity.

General Purpose Amplifier Substitutes (TLV2452 Series):

The TLV2452 series (TLV2452AID, TLV2452AIDR, TLV2452CD, TLV2452CDR, TLV2452ID) maintains general purpose amplifier classification and identical supply voltage range (2.7 V to 6 V). These parts are functionally compatible with MAX492CSA-T in applications where lower slew rate (0.11 V/µs versus 0.2 V/µs) and reduced gain bandwidth product (220 kHz versus 500 kHz) are acceptable. All TLV2452 variants feature lower supply current (23 µA versus 150 µA per channel), beneficial for power-constrained applications. Temperature range variants are available: TLV2452CD and TLV2452CDR match the 0°C to 70°C operating range of MAX492CSA-T, while TLV2452AID, TLV2452AIDR, and TLV2452ID extend to -40°C to 125°C. All TLV2452 parts are ROHS3 compliant with MSL 1 rating.

CMOS Amplifier Substitutes (OPA2344 and TLV2262 Series):

OPA2344UA and OPA2344UA/2K5 offer enhanced performance with 0.8 V/µs slew rate and 1 MHz gain bandwidth product. These CMOS amplifiers feature extremely low input bias current (0.2 pA) and extended operating temperature range (-40°C to 85°C). Supply voltage range is 2.5 V to 5.5 V, which overlaps with MAX492CSA-T requirements but with reduced maximum supply voltage (5.5 V versus 6 V). Output current per channel is 15 mA, lower than MAX492CSA-T (30 mA).

TLV2262AID and TLV2262AIDR provide extended supply voltage range (2.7 V to 8 V) and higher output current capability (50 mA per channel). Slew rate is 0.55 V/µs with 710 kHz gain bandwidth product. Operating temperature extends to -40°C to 125°C. Supply current is higher at 400 µA per channel. These parts are suitable for applications requiring wider supply voltage tolerance and higher output drive capability.

All substitute parts maintain 8-SOIC package compatibility, ROHS3 compliance, and MSL 1 rating (except OPA2344 variants with MSL 2). Product status is active for all substitutes, ensuring procurement availability.

Frequently Asked Questions (FAQ)

Q: Can MAX492CSA+T directly replace MAX492CSA-T without circuit modification?

A: Yes. MAX492CSA+T is electrically and mechanically identical to MAX492CSA-T. Both parts share the same electrical specifications, package geometry (8-SOIC), and operating parameters. The only difference is product status (Active versus Obsolete) and packaging format (Cut Tape & Digi-Reel® versus standard). No circuit modifications are required.

Q: What is the key difference between TLV2452 and MAX492CSA-T?

A: The TLV2452 series has lower slew rate (0.11 V/µs versus 0.2 V/µs) and lower gain bandwidth product (220 kHz versus 500 kHz). However, both are general purpose amplifiers with identical supply voltage range (2.7 V to 6 V) and 8-SOIC packaging. TLV2452 consumes significantly less supply current (23 µA versus 150 µA per channel). Substitution is valid for applications where the reduced bandwidth and slew rate do not impact performance.

Q: Why do OPA2344 and TLV2262 have different supply voltage ranges?

A: OPA2344UA operates at 2.5 V to 5.5 V, while TLV2262 operates at 2.7 V to 8 V. Both overlap with MAX492CSA-T (2.7 V to 6 V) within the 2.7 V to 5.5 V window. TLV2262 provides extended upper voltage tolerance to 8 V, beneficial for systems with variable supply rails. OPA2344 has lower minimum supply voltage (2.5 V), suitable for ultra-low-voltage applications. Selection depends on system supply voltage requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MAX492CSA+T, OPA2344UA, OPA2344UA/2K5, TLV2262AID, TLV2262AIDR, TLV2452AID, TLV2452AIDR, TLV2452CD, TLV2452CDR, TLV2452ID) are ROHS3 compliant. Moisture sensitivity level is MSL 1 (Unlimited) for all parts except OPA2344 variants, which are MSL 2 (1 Year).

Q: What is the difference between TLV2452CD and TLV2452AID?

A: Both are identical electrically. The difference is operating temperature range: TLV2452CD operates 0°C to 70°C (matching MAX492CSA-T), while TLV2452AID operates -40°C to 125°C. TLV2452CD is recommended for applications with standard industrial temperature requirements. TLV2452AID is required for extended temperature range applications.

Q: Can I use TLV2262 in place of MAX492CSA-T?

A: TLV2262 is functionally compatible in 8-SOIC package and dual-channel configuration. However, electrical performance differs: TLV2262 has lower slew rate (0.55 V/µs versus 0.2 V/µs) and higher supply current (400 µA versus 150 µA per channel). TLV2262 offers extended supply voltage range (up to 8 V) and higher output current (50 mA). Substitution is valid only if application requirements accommodate these parameter differences.

Q: What packaging options are available for substitute parts?

A: Packaging varies by part number. MAX492CSA+T is available in Cut Tape (CT) & Digi-Reel®. OPA2344UA is available in Tube. TLV2262AID has no specified packaging format. TLV2262AIDR is Cut Tape (CT) & Digi-Reel®. TLV2452AID and TLV2452ID are Tube. TLV2452AIDR is Cut Tape (CT) & Digi-Reel®. TLV2452CD and TLV2452CDR are Tube and Cut Tape (CT) respectively. Packaging selection depends on assembly process requirements and inventory management.

Q: Is input offset voltage critical for substitution?

A: Input offset voltage is a secondary substitution parameter. MAX492CSA-T specifies 200 µV. OPA2344 and TLV2262 also specify 200 µV, providing exact match. TLV2452 specifies 300 µV, which is acceptable for most general purpose applications where offset voltage is not precision-critical. For precision instrumentation requiring tight offset voltage control, OPA2344 or TLV2262 are preferred.

Q: What is the inventory status of substitute parts?

A: MAX492CSA+T has 1,335 units in stock. OPA2344UA/2K5 has 3,922 units. OPA2344UA has 3,016 units. TLV2262AID has 563,650 units (highest availability). TLV2262AIDR has 6,192 units. TLV2452AID has 5,000,300 units (highest availability). TLV2452AIDR has 3,920 units. TLV2452CD has 2,100 units. TLV2452CDR has 6,723 units. TLV2452ID has 1,181 units. TLV2452 series offers superior long-term availability.

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