LMC6442IM Equivalent & Substitute Parts

Part Overview

The LMC6442IM is a general-purpose dual operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for low-power applications with a supply current of 1.9 µA per channel. The LMC6442IM is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility through matching electrical specifications and identical package geometry.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	11	V
Operating Temperature	-40 to 85	°C
Current - Supply	1.9	µA (x2 Channels)
Slew Rate	0.0041	V/µs
Gain Bandwidth Product	10.5	kHz

Substitute Part Grouping Explanation

Substitution of the LMC6442IM is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Package type: 8-SOIC (0.154", 3.90mm Width) — mandatory for PCB compatibility
Number of circuits: 2 — functional requirement
Output type: Rail-to-Rail — circuit operation requirement
Mounting type: Surface Mount — assembly compatibility
Supply voltage range: Minimum 1.8 V, Maximum 11 V — power supply compatibility

Acceptable Variation Parameters: Substitute parts may exhibit differences in slew rate, gain bandwidth product, input bias current, input offset voltage, output current per channel, and supply current, provided the substitute part operates within the specified supply voltage range and maintains the same package and circuit configuration.

Direct Equivalent: LMC6442IM/NOPB is a direct equivalent manufactured by National Semiconductor, sharing identical electrical specifications and packaging.

Functional Alternatives: MAX407CSA+, MAX407CSA+T, MAX407ESA+, and MAX407ESA+T (Analog Devices Inc./Maxim Integrated) and TS942IDT, TS942AIDT (STMicroelectronics) are functional substitutes. These parts maintain the required 8-SOIC package, dual-circuit configuration, and rail-to-rail output capability. However, these alternatives operate within a reduced supply voltage range (2.5 V to 10 V) compared to the LMC6442IM (1.8 V to 11 V).

Parameter Comparison

Parameter	LMC6442IM	LMC6442IM/NOPB	MAX407CSA+T	MAX407ESA+T	TS942IDT	TS942AIDT
Manufacturer	Texas Instruments	National Semiconductor	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Circuits	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
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply Span (Min)	1.8 V	1.8 V	2.5 V	2.5 V	2.5 V	2.5 V
Voltage - Supply Span (Max)	11 V	11 V	10 V	10 V	10 V	10 V
Operating Temperature	-40 to 85°C	-40 to 85°C	0 to 70°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Current - Supply	1.9 µA (x2 Channels)	1.9 µA (x2 Channels)	1 µA (x2 Channels)	1 µA (x2 Channels)	1.2 µA (x2 Channels)	1.2 µA (x2 Channels)
Slew Rate	0.0041 V/µs	0.0041 V/µs	0.005 V/µs	0.005 V/µs	0.0045 V/µs	0.0045 V/µs
Gain Bandwidth Product	10.5 kHz	10.5 kHz	8 kHz	8 kHz	10 kHz	10 kHz
Current - Input Bias	0.005 pA	0.005 pA	0.1 pA	0.1 pA	1 pA	1 pA
Voltage - Input Offset	1.5 mV	1.5 mV	1 mV	1 mV	10 mV	5 mV
Current - Output / Channel	2.1 mA	2.1 mA	600 µA	600 µA	5 mA	5 mA
RoHS Status	RoHS non-compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Substitution): LMC6442IM/NOPB is the primary substitute for the obsolete LMC6442IM. This part maintains identical electrical specifications, supply voltage range (1.8 V to 11 V), and package configuration. The part is currently in active production status with 2166 units in stock.

For New Designs with Extended Temperature Range: MAX407ESA+T is suitable for applications requiring the full -40°C to 85°C operating temperature range. This part is ROHS3 compliant and available in Tape & Reel packaging with 3238 units in stock. Note that the supply voltage range is reduced to 2.5 V to 10 V.

For New Designs with Standard Temperature Range: MAX407CSA+T operates over 0°C to 70°C and is ROHS3 compliant. This option is appropriate for commercial-grade applications where the reduced temperature range is acceptable.

For High-Volume Production: TS942IDT and TS942AIDT (STMicroelectronics) offer the highest inventory availability (30300 and 35174 units respectively) and are ROHS3 compliant. These parts maintain the -40°C to 85°C operating temperature range and are suitable for applications operating within the 2.5 V to 10 V supply voltage range.

Compliance Considerations: All active substitute parts listed are ROHS3 compliant, addressing environmental and regulatory requirements. The original LMC6442IM is RoHS non-compliant and should be replaced in new designs.

Frequently Asked Questions (FAQ)

Q: Can MAX407CSA+T be used as a direct replacement for LMC6442IM in all applications?

A: MAX407CSA+T is functionally compatible for applications operating within its specified supply voltage range (2.5 V to 10 V) and temperature range (0°C to 70°C). Applications requiring operation below 2.5 V supply voltage or below 0°C ambient temperature require alternative substitutes. The 8-SOIC package is identical, enabling direct PCB substitution.

Q: What is the primary difference between TS942IDT and TS942AIDT?

A: Both parts are manufactured by STMicroelectronics and share identical electrical specifications except for input offset voltage. TS942IDT specifies 10 mV maximum input offset voltage, while TS942AIDT specifies 5 mV maximum. Both maintain the same package, supply voltage range, and operating temperature range. Selection depends on input offset voltage tolerance requirements.

Q: Is LMC6442IM/NOPB identical to the original LMC6442IM?

A: LMC6442IM/NOPB is the direct equivalent of LMC6442IM, manufactured by National Semiconductor. Both parts share identical electrical specifications, supply voltage range (1.8 V to 11 V), package configuration (8-SOIC), and operating temperature range (-40°C to 85°C). The primary difference is product status: LMC6442IM is obsolete while LMC6442IM/NOPB is active.

Q: Why do MAX407 variants have reduced supply voltage range compared to LMC6442IM?

A: The MAX407 series is specified for operation between 2.5 V and 10 V, while the LMC6442IM operates between 1.8 V and 11 V. This difference reflects the design specifications of each device family. Applications requiring the extended 1.8 V to 11 V range must use LMC6442IM/NOPB or equivalent LMC6442 variants.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 8-SOIC surface-mount package. Packaging options (Bulk, Tube, Cut Tape & Digi-Reel, Tape & Reel) vary by manufacturer and part number. Verify specific packaging availability with the supplier for your procurement requirements.

Q: What compliance certifications apply to substitute parts?

A: All active substitute parts (LMC6442IM/NOPB, MAX407 series, TS942 series) are ROHS3 compliant and REACH unaffected. The original LMC6442IM is RoHS non-compliant. For new designs subject to environmental regulations, select from the active, compliant alternatives.

Q: Can TS942IDT be used in applications requiring minimum input offset voltage?

A: TS942IDT specifies 10 mV maximum input offset voltage, which is higher than LMC6442IM (1.5 mV) and TS942AIDT (5 mV). Applications with strict input offset voltage requirements should use TS942AIDT or MAX407 variants, which specify lower maximum offset voltages.

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