MAX495ESA Equivalent & Substitute Parts Reference

Part Overview

The MAX495ESA 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 applications requiring single-circuit amplification. The MAX495ESA is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility across electrical performance parameters, package dimensions, and supply voltage specifications.

Key Parameters

Parameter	MAX495ESA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
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	150	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the MAX495ESA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — physical footprint compatibility
Voltage - Supply Span: 2.7 V minimum to 6 V maximum — power supply range compatibility
Output Type: Rail-to-Rail — output swing capability
Number of Circuits: 1 — single amplifier configuration
Mounting Type: Surface Mount — assembly process compatibility

Secondary Performance Parameters:

Slew Rate: 0.2 V/µs or greater — transient response capability
Gain Bandwidth Product: 500 kHz or greater — frequency response capability
Current - Supply: operating current within application tolerance
Operating Temperature: minimum -40°C to maximum 85°C or extended range

All substitute parts listed maintain the 8-SOIC package footprint and 2.7 V to 6 V supply voltage range. Substitute parts from the TLV2461 series (Texas Instruments) and MAX4091ASA+ (Analog Devices) meet or exceed the electrical performance specifications of the MAX495ESA while offering improved characteristics such as lower input offset voltage, reduced input bias current, and active product status.

Parameter Comparison

Parameter	MAX495ESA	MAX4091ASA+	TLV2461AID	TLV2461AIDR	TLV2461CD	TLV2461CDR	TLV2461ID	TLV2461IDR	Unit
Amplifier Type	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	—
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	—
Slew Rate	0.2	0.2	1.6	1.6	1.6	1.6	1.6	1.6	V/µs
Gain Bandwidth Product	500	500	6.4	6.4	6.4	6.4	6.4	6.4	kHz
Current - Input Bias	25	20	1.3	1.3	1.3	1.3	1.3	1.3	nA
Voltage - Input Offset	200	30	500	500	500	500	500	500	µV
Current - Supply	150	130	550	550	550	550	550	550	µA
Current - Output / Channel	30	—	80	80	80	80	80	80	mA
Voltage - Supply Span (Min)	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	V
Voltage - Supply Span (Max)	6	6	6	6	6	6	6	6	V
Operating Temperature (Min)	-40	-40	-40	-40	0	0	-40	-40	°C
Operating Temperature (Max)	85	125	125	125	70	70	125	125	°C
Package / Case	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	—
Product Status	Obsolete	Active	Obsolete	Active	Active	Active	Obsolete	Active	—
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Primary Recommendation: MAX4091ASA+

The MAX4091ASA+ is the direct equivalent from Analog Devices Inc./Maxim Integrated. This part maintains identical electrical performance specifications to the MAX495ESA while offering active product status. The MAX4091ASA+ features improved input offset voltage (30 µV versus 200 µV) and reduced input bias current (20 nA versus 25 nA). Extended operating temperature range (-40°C to 125°C) provides additional margin for industrial applications. ROHS3 compliance supports modern manufacturing and environmental requirements. Current inventory of 1099 units supports production needs.

Secondary Recommendation: TLV2461AIDR (Texas Instruments)

The TLV2461AIDR from Texas Instruments provides active product status with the highest inventory availability (2777 units). This part maintains full supply voltage compatibility (2.7 V to 6 V) and 8-SOIC package footprint. Enhanced performance characteristics include 1.6 V/µs slew rate and 6.4 MHz gain bandwidth product, exceeding MAX495ESA specifications. Extended operating temperature range (-40°C to 125°C) and ROHS3 compliance support long-term production. Tape & Reel packaging (TR) accommodates high-volume manufacturing processes.

Alternative Recommendation: TLV2461CD (Texas Instruments)

The TLV2461CD offers active product status with tube packaging. This part is suitable for applications with standard industrial temperature requirements (0°C to 70°C). Identical electrical performance to TLV2461AIDR with 1131 units in inventory. Selection of TLV2461CD is appropriate when operating temperature range does not require extended low-temperature operation below 0°C.

Compliance Considerations:

All recommended substitute parts comply with ROHS3 and REACH requirements. The MAX495ESA is RoHS non-compliant; transition to compliant alternatives is necessary for new designs and regulatory compliance. All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity classification, matching the original part specification.

Frequently Asked Questions (FAQ)

Q: Can the MAX495ESA be directly replaced with MAX4091ASA+ without circuit modification?

A: The MAX4091ASA+ maintains identical package footprint (8-SOIC), supply voltage range (2.7 V to 6 V), and output type (rail-to-rail). Pin configuration and functional operation are equivalent. Direct substitution is supported without circuit modification.

Q: What is the primary difference between MAX4091ASA+ and TLV2461 series parts?

A: Both part families maintain 8-SOIC package compatibility and 2.7 V to 6 V supply voltage range. The TLV2461 series offers enhanced performance with 1.6 V/µs slew rate and 6.4 MHz gain bandwidth product compared to 0.2 V/µs and 500 kHz in the MAX495ESA and MAX4091ASA+. TLV2461 parts are manufactured by Texas Instruments; MAX4091ASA+ is manufactured by Analog Devices.

Q: Are there temperature range differences between substitute parts?

A: Yes. The MAX495ESA operates -40°C to 85°C. MAX4091ASA+ and most TLV2461 variants (AIDR, ID, IDR, QDRG4) extend to -40°C to 125°C. TLV2461CD and TLV2461CDR are limited to 0°C to 70°C. Select extended-range parts for applications requiring operation below 0°C or above 85°C.

Q: What packaging options are available for substitute parts?

A: MAX4091ASA+ is supplied in Tube packaging. TLV2461AIDR and TLV2461CDR are supplied in Tape & Reel (TR) format for automated assembly. TLV2461AID, TLV2461CD, TLV2461ID, and TLV2461QDRG4 have packaging designations not specified in standard format. Verify packaging compatibility with assembly equipment before procurement.

Q: Do all substitute parts meet RoHS compliance requirements?

A: All recommended substitute parts (MAX4091ASA+, TLV2461 series) comply with ROHS3 standards. The original MAX495ESA is RoHS non-compliant. Transition to compliant alternatives is required for new designs and regulatory adherence.

Q: Which substitute part offers the best inventory availability?

A: TLV2461AIDR provides the highest inventory level at 2777 units. TLV2461IDR offers 2000 units. TLV2461ID provides 2450 units. MAX4091ASA+ has 1099 units available. Inventory levels support production requirements across all recommended alternatives.

Q: Can TLV2461 parts be used in applications requiring the exact electrical performance of MAX495ESA?

A: TLV2461 parts exceed MAX495ESA electrical specifications. Enhanced slew rate (1.6 V/µs versus 0.2 V/µs) and gain bandwidth product (6.4 MHz versus 500 kHz) provide superior performance. These characteristics are compatible with applications designed for MAX495ESA; no performance degradation occurs. Applications sensitive to higher supply current (550 µA versus 150 µA) require verification of power budget.

Q: What is the significance of the "Beyond-the-Rails™" series designation for MAX4091ASA+?

A: The Beyond-the-Rails™ series designation indicates enhanced rail-to-rail output capability. This specification is functionally equivalent to the rail-to-rail output type of the MAX495ESA. The designation reflects Analog Devices marketing terminology for this performance class.

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