MAX492EPA+ Equivalent & Substitute Parts Reference

Part Overview

The MAX492EPA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits in an 8-PDIP through-hole package. This device is classified as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing design support and procurement continuity. The MAX492EPA+ operates across a 2.7V to 6V supply range with rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications.

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 (x2 Channels)	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-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MAX492EPA+ is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Dual-circuit operational amplifier configuration (2 circuits per package)
Rail-to-rail output capability
8-PDIP through-hole package format (0.300", 7.62mm)
Supply voltage range: 2.7V to 6V minimum overlap
Operating temperature range compatibility with application requirements

Substitution Logic: Substitute parts are grouped into two categories based on performance characteristics:

Category A - Lower Performance Tier (TLV2452AIP, TLV2452IP): These parts maintain the core electrical specifications of the MAX492EPA+ with reduced slew rate (0.11V/µs vs. 0.2V/µs) and lower gain bandwidth product (220 kHz vs. 500 kHz). These substitutes are suitable for applications where the original performance envelope is not critical and lower power consumption is beneficial.

Category B - Higher Performance Tier (TLV2462AIP, TLV2462CP, TLV2462IP, TLV2772AIP, TLV2772CP, TLV2772IP): These parts exceed the MAX492EPA+ specifications with significantly higher slew rates (1.6V/µs to 10.5V/µs) and gain bandwidth products (5.1 MHz to 6.4 MHz). These substitutes are suitable for applications requiring enhanced dynamic performance while maintaining package and supply voltage compatibility.

All substitute parts share identical package geometry, through-hole mounting type, and RoHS3 compliance status with the original device.

Parameter Comparison

Parameter	MAX492EPA+	TLV2452AIP	TLV2452IP	TLV2462AIP	TLV2462CP	TLV2462IP	TLV2772AIP	TLV2772CP	TLV2772IP
Manufacturer	Analog Devices	Texas Instruments	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	CMOS	CMOS	CMOS
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)	0.2	0.11	0.11	1.6	1.6	1.6	10.5	10.5	10.5
Gain Bandwidth Product (kHz)	500	220	220	6400	6400	6400	5100	5100	5100
Current - Input Bias (nA)	25	0.5	0.5	1.3	1.3	1.3	0.002	0.002	0.002
Voltage - Input Offset (µV)	200	300	300	500	500	500	500	500	500
Current - Supply (µA, x2 Channels)	150	23	23	550	550	550	1000	1000	1000
Current - Output / Channel (mA)	30	10	10	80	80	80	50	50	50
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	2.7	2.7	2.5	2.5	2.5
Voltage - Supply Span Max (V)	6	6	6	6	6	6	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 85	-40 to 125	-40 to 125	-40 to 125	0 to 70	-40 to 125	-40 to 125	0 to 70	-40 to 125
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Last Time Buy	Last Time Buy	Last Time Buy	Active	Active	Last Time Buy	Last Time Buy	Last Time Buy

Engineering Selection Recommendations

For Direct Replacement with Reduced Performance Envelope:

The TLV2452AIP and TLV2452IP (Texas Instruments) provide the closest functional match to the MAX492EPA+ with minimal performance trade-offs. Both parts maintain identical supply voltage ranges (2.7V to 6V) and package geometry. The TLV2452IP offers extended operating temperature range (-40°C to 125°C) compared to the MAX492EPA+ (-40°C to 85°C), providing superior thermal coverage. The TLV2452AIP is designated Last Time Buy status, while TLV2452IP remains in active production. Both parts feature significantly lower supply current consumption (23µA vs. 150µA), which is advantageous for battery-powered applications. The trade-off is reduced slew rate (0.11V/µs vs. 0.2V/µs) and lower gain bandwidth product (220 kHz vs. 500 kHz).

For Enhanced Performance Applications:

The TLV2462 series (TLV2462AIP, TLV2462CP, TLV2462IP) offers substantially improved dynamic performance with 1.6V/µs slew rate and 6.4 MHz gain bandwidth product. The TLV2462CP is the only active production part in this group with a restricted operating temperature range (0°C to 70°C). The TLV2462AIP and TLV2462IP both support the full industrial temperature range (-40°C to 125°C). These parts are suitable for applications requiring faster signal processing while maintaining the same package and supply voltage compatibility.

For Ultra-Low Input Bias Current Applications:

The TLV2772 series (TLV2772AIP, TLV2772CP, TLV2772IP) employs CMOS technology, delivering exceptionally low input bias current (2 pA vs. 25 nA). These parts feature the highest slew rate (10.5V/µs) and competitive gain bandwidth product (5.1 MHz). The supply voltage range is slightly reduced (2.5V to 5.5V minimum), which must be verified against application requirements. The TLV2772IP supports the full industrial temperature range (-40°C to 125°C) and is designated Last Time Buy status.

Compliance and Regulatory Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. The MAX492EPA+ is classified as obsolete; therefore, immediate transition planning to an active production substitute is recommended. The TLV2462CP and TLV2462IP are the only parts with active production status among the higher-performance options. For long-term supply security, TLV2462IP is the preferred selection, offering active production status, extended temperature range, and superior performance characteristics.

Frequently Asked Questions (FAQ)

Q1: Can the TLV2452 series be used as a direct pin-for-pin replacement for the MAX492EPA+?

A: Yes. The TLV2452AIP and TLV2452IP are pin-compatible with the MAX492EPA+ in 8-PDIP through-hole packages. Both parts feature identical pinout, supply voltage range (2.7V to 6V), and rail-to-rail output configuration. No PCB modifications are required for mechanical or electrical interface compatibility.

Q2: What are the performance trade-offs when substituting with TLV2452 devices?

A: The TLV2452 series exhibits lower slew rate (0.11V/µs vs. 0.2V/µs) and reduced gain bandwidth product (220 kHz vs. 500 kHz) compared to the MAX492EPA+. These parameters affect the maximum rate of output voltage change and frequency response characteristics. Applications with stringent bandwidth or slew rate requirements should evaluate the TLV2462 or TLV2772 series instead.

Q3: Which substitute part offers the best long-term availability?

A: The TLV2462IP is designated as active production status, providing the most reliable long-term supply continuity. The TLV2462CP is also active but with restricted operating temperature range (0°C to 70°C). All other substitutes are designated Last Time Buy, indicating limited future availability.

Q4: Are there supply voltage compatibility issues with any substitute parts?

A: The TLV2772 series has a minimum supply voltage of 2.5V (vs. 2.7V for MAX492EPA+) and maximum of 5.5V (vs. 6V). Applications operating at 5.5V to 6V supply voltage cannot use the TLV2772 series. The TLV2452 and TLV2462 series maintain full 2.7V to 6V compatibility with the original device.

Q5: What is the impact of operating temperature range differences?

A: The MAX492EPA+ operates from -40°C to 85°C. The TLV2462CP and TLV2772CP are restricted to 0°C to 70°C, unsuitable for extended industrial temperature applications. The TLV2452IP, TLV2462IP, and TLV2772IP all support -40°C to 125°C, providing superior thermal coverage for demanding environments.

Q6: How do input bias current differences affect circuit design?

A: The MAX492EPA+ has 25 nA input bias current. The TLV2452 series reduces this to 0.5 nA, while the TLV2772 series achieves 2 pA. Lower input bias current reduces errors in high-impedance signal conditioning circuits and precision measurement applications. Applications with high source impedance benefit from the TLV2772 series.

Q7: Which substitute part is recommended for battery-powered applications?

A: The TLV2452 series offers the lowest supply current consumption (23µA vs. 150µA for MAX492EPA+), making it optimal for battery-powered designs. The TLV2462 series consumes 550µA, and the TLV2772 series consumes 1mA, both significantly higher than the original device.

Q8: Can the TLV2462 or TLV2772 series be used in applications designed for the MAX492EPA+?

A: Yes, both series are pin-compatible and electrically compatible within the overlapping supply voltage range (2.7V to 5.5V for TLV2772, 2.7V to 6V for TLV2462). These parts offer superior performance characteristics and are suitable for applications where enhanced bandwidth or lower input bias current provides design benefits. No circuit modifications are required for basic functionality.

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