MAX494CPD Equivalent & Substitute Parts

Part Overview

The MAX494CPD is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device features four independent amplifier circuits in a 14-pin DIP package with rail-to-rail output capability. The MAX494CPD is classified as an obsolete product, necessitating identification of active equivalent and substitute components for new designs and production continuity. Substitution is required for applications requiring long-term component availability, improved performance characteristics, or enhanced compliance standards.

Key Parameters

Parameter	Value	Unit
Number of Circuits	4	Channels
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 (Total)	150	µA
Current - Output per Channel	30	mA
Voltage - Supply Span	2.7 to 6.0	V
Operating Temperature	0 to 70	°C
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution of the MAX494CPD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Four independent amplifier circuits in single package
Rail-to-rail output configuration
14-pin DIP package (0.300", 7.62mm pitch)
Through-hole mounting type
Supply voltage range compatibility (minimum 2.7 V, maximum 6.0 V)
Operating temperature range requirements

Substitution Categories:

Category 1: Direct Performance Equivalents (TLV2454 Series) The TLV2454AIN, TLV2454CN, and TLV2454IN maintain identical package, circuit count, and output type. These parts operate within the same supply voltage range (2.7 V to 6.0 V) and preserve through-hole mounting. The TLV2454 series exhibits lower slew rate (0.11 V/µs versus 0.2 V/µs) and reduced gain bandwidth product (220 kHz versus 500 kHz), making them suitable for applications not requiring high-speed performance. All TLV2454 variants are active products with ROHS3 compliance.

Category 2: Enhanced Performance Substitutes (TLV2464 Series) The TLV2464AIN, TLV2464CN, and TLV2464IN provide superior performance characteristics while maintaining package compatibility. These devices feature increased slew rate (1.6 V/µs), higher gain bandwidth product (6.4 MHz), and greater output current capability (80 mA per channel). Supply voltage range and circuit configuration remain identical. TLV2464 variants are active products suitable for applications requiring higher bandwidth and faster transient response.

Category 3: CMOS Technology Alternatives (TLV2774 Series) The TLV2774AIN, TLV2774CN, and TLV2774IN employ CMOS amplifier architecture with significantly reduced input bias current (2 pA). These devices deliver higher slew rate (10.5 V/µs) and gain bandwidth product (5.1 MHz). Supply voltage range is restricted to 2.5 V to 5.5 V. TLV2774 variants are classified as Last Time Buy products with ROHS3 compliance.

Parameter Comparison

Parameter	MAX494CPD	TLV2454AIN / CN / IN	TLV2464AIN / CN / IN	TLV2774AIN / CN / IN
Manufacturer	Analog Devices / Maxim	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Last Time Buy
Number of Circuits	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	0.2	0.11	1.6	10.5
Gain Bandwidth Product (kHz)	500	220	6400	5100
Input Bias Current (nA)	25	0.5	0.0013	0.000002
Input Offset Voltage (µV)	200	300	500	700
Supply Current Total (µA)	150	23	550	1000
Output Current per Channel (mA)	30	10	80	50
Supply Voltage Range (V)	2.7 to 6.0	2.7 to 6.0	2.7 to 6.0	2.5 to 5.5
Package / Case	14-DIP	14-DIP	14-DIP	14-DIP
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Minimal Performance Impact: Select TLV2454CN (1900 pcs inventory) or TLV2454AIN (895 pcs inventory) when application bandwidth requirements do not exceed 220 kHz. These devices maintain the closest electrical profile to the MAX494CPD while offering active product status and ROHS3 compliance. Temperature range selection between industrial (0°C to 70°C) and extended (-40°C to 125°C) variants accommodates specific application requirements.

For Enhanced Performance Applications: Select TLV2464CN (907 pcs inventory) or TLV2464IN (963 pcs inventory) when applications require bandwidth up to 6.4 MHz and higher output current capability (80 mA per channel). These devices maintain full supply voltage compatibility (2.7 V to 6.0 V) and active product status. Extended temperature variants (TLV2464AIN, TLV2464IN) support -40°C to 125°C operation.

For Low-Power, High-Speed Applications: Select TLV2774CN (4100 pcs inventory) when extremely low input bias current (2 pA) and high slew rate (10.5 V/µs) are required. Note that supply voltage range is restricted to 2.5 V to 5.5 V. TLV2774 variants are classified as Last Time Buy; long-term availability should be confirmed before design commitment.

Compliance Considerations: All substitute parts listed are ROHS3 compliant, addressing environmental and regulatory requirements not met by the obsolete MAX494CPD. REACH compliance is unaffected across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can TLV2454 series parts directly replace MAX494CPD in existing designs? A: Yes, TLV2454 series parts are pin-compatible and maintain identical package configuration (14-DIP). Electrical performance is lower (220 kHz bandwidth versus 500 kHz), but supply voltage range and circuit count are identical. Designs operating below 220 kHz require no modification.

Q: What is the primary difference between TLV2454 and TLV2464 series? A: TLV2464 series provides significantly higher bandwidth (6.4 MHz versus 220 kHz), faster slew rate (1.6 V/µs versus 0.11 V/µs), and greater output current (80 mA versus 10 mA per channel). Both maintain identical package and supply voltage compatibility. TLV2464 is suitable for high-speed signal conditioning applications.

Q: Why is TLV2774 classified as Last Time Buy? A: TLV2774 is in end-of-life status. While currently available (4100 pcs TLV2774CN in stock), Texas Instruments has announced final production. New designs should prioritize TLV2454 or TLV2464 series for long-term availability assurance.

Q: Are temperature range variants interchangeable? A: Temperature range variants (suffix A/I for -40°C to 125°C, suffix C for 0°C to 70°C) are electrically identical but differ in guaranteed operating temperature. Selection depends on application environment. Industrial temperature range (0°C to 70°C) variants are typically lower cost.

Q: What is the supply voltage compatibility range for all substitutes? A: TLV2454 and TLV2464 series support 2.7 V to 6.0 V, matching MAX494CPD. TLV2774 series is restricted to 2.5 V to 5.5 V. Verify application supply voltage before selecting TLV2774.

Q: Does package footprint differ between MAX494CPD and substitute parts? A: No. All substitute parts use identical 14-DIP package (0.300", 7.62mm pitch) with through-hole mounting. PCB layouts require no modification for mechanical compatibility.

Q: Which substitute offers the lowest power consumption? A: TLV2454 series consumes 23 µA total supply current, significantly lower than MAX494CPD (150 µA). TLV2774 series consumes 1 mA, higher than both alternatives. For battery-powered applications, TLV2454 is optimal.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts (TLV2454, TLV2464, TLV2774 series) are ROHS3 compliant. MAX494CPD is non-compliant. Substitution addresses environmental regulatory requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message