MAX495CSA Equivalent & Substitute Parts

Part Overview

The MAX495CSA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, packaged in 8-SOIC surface mount configuration. This device features rail-to-rail output capability and is designed for low-power analog signal processing applications requiring single-circuit amplification. The MAX495CSA is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain functional compatibility across key electrical parameters including supply voltage range, output type, package configuration, and thermal operating range.

Key Parameters

Parameter	MAX495CSA
Amplifier Type	General Purpose
Number of Circuits	1
Output Type	Rail-to-Rail
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	6 V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX495CSA is determined by strict adherence to the following allowed parameters:

Primary Compatibility Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply Span: 2.7 V to 6 V (minimum and maximum must be met or exceeded)
Mounting Type: Surface Mount

Secondary Considerations:

Operating Temperature Range: Substitute parts must support at least the 0°C ~ 70°C range of the original part
RoHS Compliance: Preferred for new designs
Product Status: Active or Obsolete status does not disqualify a substitute if electrical parameters align

Substitute parts are grouped into two categories:

Category 1 - Direct Maxim/Analog Devices Substitutes: MAX4091ASA+ represents the active-status equivalent from the same manufacturer, offering improved specifications while maintaining identical package and supply voltage compatibility.

Category 2 - Texas Instruments TLV2461 Series: The TLV2461 family (TLV2461AID, TLV2461AIDR, TLV2461CD, TLV2461CDR, TLV2461ID, TLV2461IDR, TLV2461QDRG4) provides functional equivalence with enhanced performance characteristics. These parts maintain the required 8-SOIC package, 2.7 V to 6 V supply range, and rail-to-rail output configuration. Variants differ in packaging format (Tube vs. Tape & Reel) and temperature rating (0°C ~ 70°C vs. -40°C ~ 125°C).

Parameter Comparison

Parameter	MAX495CSA	MAX4091ASA+	TLV2461AID	TLV2461AIDR	TLV2461CD	TLV2461CDR	TLV2461ID	TLV2461IDR	TLV2461QDRG4
Manufacturer	Analog Devices/Maxim	Analog Devices/Maxim	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1	1
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
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	6 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V	6 V
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Obsolete	Active	Obsolete	Active	Active	Active	Obsolete	Active	Discontinued at DiGi Electronics
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Not specified	Tube	Not specified	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Not specified	Tape & Reel (TR)	Not specified

Engineering Selection Recommendations

For New Designs:

Select TLV2461AIDR or TLV2461IDR as primary substitutes. Both parts are manufactured by Texas Instruments with Active product status, ROHS3 compliance, and extended operating temperature range (-40°C ~ 125°C). The Tape & Reel packaging format supports automated assembly processes. These variants provide superior long-term availability and regulatory compliance compared to the obsolete MAX495CSA.

For Temperature-Constrained Applications (0°C ~ 70°C):

Select TLV2461CD or TLV2461CDR when operating temperature requirements match the original specification. Both maintain Active status and ROHS3 compliance. The CDR variant in Tape & Reel format is preferred for production environments.

For Same-Manufacturer Continuity:

Select MAX4091ASA+ when maintaining Analog Devices/Maxim component ecosystem is required. This part is Active status, ROHS3 compliant, and offers extended temperature range (-40°C ~ 125°C). Tube packaging is standard for this variant.

Obsolete Part Avoidance:

Do not select TLV2461AID, TLV2461ID, or TLV2461QDRG4 for new production designs. These parts carry Obsolete or Discontinued status, limiting future availability and support.

Frequently Asked Questions (FAQ)

Q: Can MAX495CSA be directly replaced with MAX4091ASA+ without circuit modification?

A: Yes. Both parts share identical package (8-SOIC), supply voltage range (2.7 V to 6 V), and rail-to-rail output configuration. Pin-to-pin compatibility is maintained. The MAX4091ASA+ offers improved specifications (lower input offset voltage: 30 µV vs. 200 µV; lower input bias current: 20 nA vs. 25 nA) with no negative impact on existing circuit designs.

Q: What is the primary difference between TLV2461 variants?

A: TLV2461 variants differ in three aspects: (1) Temperature rating—"A" suffix indicates -40°C ~ 125°C; "C" suffix indicates 0°C ~ 70°C; (2) Packaging format—"DR" suffix indicates Tape & Reel; absence indicates tube or unspecified; (3) Product status—"AIDR," "CDR," and "IDR" are Active; "AID," "ID," and "QDRG4" are Obsolete or Discontinued.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (MAX4091ASA+, TLV2461 series) are ROHS3 compliant. The original MAX495CSA is RoHS non-compliant. Compliance is mandatory for new designs targeting EU and similar regulated markets.

Q: Which substitute offers the best long-term availability?

A: TLV2461AIDR and TLV2461CDR offer the strongest availability profile. Both are Active status from Texas Instruments, available in Tape & Reel packaging with current inventory levels exceeding 2,000 units. Extended temperature rating (-40°C ~ 125°C for AIDR) supports broader application requirements.

Q: Can TLV2461 parts be used in applications requiring 0°C ~ 70°C operation only?

A: Yes. TLV2461CD and TLV2461CDR are rated for 0°C ~ 70°C operation, matching the original MAX495CSA specification. TLV2461AIDR, TLV2461ID, and TLV2461IDR support extended range (-40°C ~ 125°C) and are also suitable for this application with no derating required.

Q: What is the impact of higher slew rate in TLV2461 parts?

A: TLV2461 series exhibits 1.6 V/µs slew rate compared to MAX495CSA at 0.2 V/µs. This represents improved transient response capability. Higher slew rate does not create compatibility issues in existing circuits; it only enhances performance for applications sensitive to signal rise time.

Q: Are there pin-compatibility concerns between MAX495CSA and TLV2461 substitutes?

A: No. Both MAX495CSA and all TLV2461 variants use identical 8-SOIC package with matching pinout. Direct PCB substitution is supported without layout modification.

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