LMC6442IN Equivalent & Substitute Parts

Part Overview

The LMC6442IN is a general-purpose operational amplifier featuring dual circuits with rail-to-rail output capability in an 8-PDIP package. Manufactured by Texas Instruments, this device is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity. The LMC6442IN operates across a wide supply voltage range of 1.8 V to 11 V with extremely low input bias current and micropower consumption characteristics suitable for battery-powered and low-power applications.

Substiute Parts

LMC6442IN

Texas InstrumentsIn Stock: 1503LMC6442IN Datasheet

Current PartRFQ

LMC6442IN/NOPB

National SemiconductorIn Stock: 1398LMC6442IN/NOPB Datasheet

DirectRFQ

MAX407CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2475MAX407CPA+ Datasheet

MFR RecommendedRFQ

MAX407EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1413MAX407EPA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMC6442IN is determined by strict equivalence across the following critical parameters: dual-circuit configuration, rail-to-rail output architecture, 8-PDIP through-hole package format, and compatible supply voltage operating range. The LMC6442IN/NOPB represents a direct manufacturer variant with identical electrical specifications and packaging. The MAX407CPA+ and MAX407EPA+ devices function as manufacturer-recommended alternatives, sharing the same package, circuit count, and output type, though with modified electrical performance characteristics within acceptable operational boundaries for general-purpose amplifier applications.

Substitution logic is based on:

• Dual operational amplifier circuits (2 channels)
• Rail-to-rail output capability
• 8-PDIP through-hole package compatibility
• Supply voltage range overlap
• General-purpose amplifier classification

Parameter Comparison

Engineering Selection Recommendations

LMC6442IN/NOPB is the direct equivalent substitute, maintaining identical electrical specifications and operating characteristics. This variant is currently in active production status and represents the primary replacement path for obsolete LMC6442IN inventory.

MAX407EPA+ is the recommended substitute for applications requiring extended temperature range operation (-40°C to 85°C). This device maintains compatibility with the original operating temperature specification and is RoHS3 compliant. The MAX407EPA+ exhibits lower input bias current (0.1 pA versus 0.005 pA) and reduced supply current consumption (1 µA versus 1.9 µA per channel), resulting in improved power efficiency. Output current capability is reduced to 0.6 mA per channel. The minimum supply voltage requirement increases to 2.5 V, which may restrict use in ultra-low-voltage applications below this threshold.

MAX407CPA+ is suitable for applications operating within the 0°C to 70°C temperature range. This variant shares electrical characteristics with MAX407EPA+ but operates across a narrower temperature window. Selection of MAX407CPA+ is appropriate only when the application environment does not require extended low-temperature operation below 0°C.

All substitute devices maintain the 8-PDIP through-hole package format, ensuring mechanical compatibility with existing printed circuit board layouts. RoHS3 compliance of MAX407 variants addresses regulatory requirements for new designs and procurement.

Frequently Asked Questions (FAQ)

Q: Can LMC6442IN/NOPB be used as a direct replacement for LMC6442IN?

A: Yes. The LMC6442IN/NOPB is a direct equivalent with identical electrical specifications, package format, and pin configuration. This variant is currently in active production and represents the primary substitute for the obsolete LMC6442IN.

Q: What are the key differences between LMC6442IN and MAX407EPA+?

A: The MAX407EPA+ exhibits lower input bias current (0.1 pA versus 0.005 pA), reduced supply current per channel (1 µA versus 1.9 µA), and lower output current capability (0.6 mA versus 2.1 mA per channel). The minimum supply voltage increases from 1.8 V to 2.5 V. The MAX407EPA+ maintains the extended temperature range (-40°C to 85°C) and is RoHS3 compliant.

Q: Is the MAX407CPA+ suitable for all applications using LMC6442IN?

A: The MAX407CPA+ is restricted to applications operating within 0°C to 70°C. Applications requiring operation below 0°C must use MAX407EPA+, which supports the full -40°C to 85°C range.

Q: Are all substitute parts available in 8-PDIP through-hole packaging?

A: Yes. LMC6442IN/NOPB, MAX407CPA+, and MAX407EPA+ are all supplied in 8-DIP (0.300", 7.62mm) through-hole packages, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: What is the impact of reduced output current in MAX407 variants?

A: The MAX407 series provides 0.6 mA per channel output current compared to 2.1 mA for the LMC6442IN. Applications requiring output currents exceeding 0.6 mA per channel must retain the LMC6442IN/NOPB or verify that the reduced output current specification is acceptable for the intended circuit function.

Q: Do the substitute parts meet RoHS compliance requirements?

A: LMC6442IN is RoHS non-compliant. MAX407CPA+ and MAX407EPA+ are both ROHS3 compliant, satisfying regulatory requirements for new designs and procurement in regulated markets.

Q: What supply voltage range must be verified when substituting with MAX407 variants?

A: The MAX407 series requires a minimum supply voltage of 2.5 V, compared to 1.8 V for LMC6442IN. Applications operating below 2.5 V supply voltage cannot use MAX407 variants and must retain LMC6442IN/NOPB.