LMC6484AIMX Equivalent & Substitute Parts

Part Overview

The LMC6484AIMX is a CMOS operational amplifier featuring four independent circuits in a 14-SOIC surface mount package. This device delivers rail-to-rail output capability with low input bias current and is designed for general-purpose analog signal processing applications. The LMC6484AIMX is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	1.3	V/µs
Gain Bandwidth Product	1.5	MHz
Current - Input Bias	0.02	pA
Voltage - Input Offset	110	µV
Current - Supply (x4 Channels)	2.6	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature	-40 to 85	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the LMC6484AIMX is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: CMOS technology
Number of Circuits: 4 independent channels
Output Type: Rail-to-Rail capability
Package / Case: 14-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 3V to maximum 15.5V overlap
Operating Temperature: -40°C to 85°C minimum coverage

Secondary Compatibility Parameters:

Slew Rate: 1.3 V/µs or greater
Gain Bandwidth Product: 1.5 MHz or greater
Input Bias Current: 0.02 pA or lower
Input Offset Voltage: 110 µV or lower
Output Current per Channel: 30 mA or greater
Supply Current: 2.6 mA (x4 Channels) or lower

Substitute parts are grouped into two categories: direct equivalents (identical electrical and mechanical specifications) and functional alternatives (compatible electrical performance within the specified parameter ranges).

Parameter Comparison

Parameter	LMC6484AIMX	LMC6484AIMX/NOPB	MC33204DTBR2G	TS914AIDT	TS914AIYDT	TS914IDT
Manufacturer	Texas Instruments	Texas Instruments	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics
Amplifier Type	CMOS	CMOS	General Purpose	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	1.3	1.3	1	1	1	1
Gain Bandwidth Product (MHz)	1.5	1.5	2.2	1.4	1.4	1.4
Current - Input Bias (pA)	0.02	0.02	80 nA	1	1	1
Voltage - Input Offset (µV)	110	110	10000	5000	5000	10000
Current - Supply (mA)	2.6	2.6	0.9	0.23	0.23	0.23
Current - Output / Channel (mA)	30	30	80	60	60	60
Voltage - Supply Span Min (V)	3	3	1.8	2.7	2.7	2.7
Voltage - Supply Span Max (V)	15.5	15.5	12	16	16	16
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 105	-40 to 125	-40 to 125	-40 to 125
Package / Case	14-SOIC	14-SOIC	14-TSSOP	14-SOIC	14-SOIC	14-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	AEC-Q100	AEC-Q100	AEC-Q100

Engineering Selection Recommendations

Direct Equivalent (Highest Compatibility):

LMC6484AIMX/NOPB is the direct equivalent to the obsolete LMC6484AIMX. This part maintains identical electrical specifications, supply voltage range, operating temperature range, and 14-SOIC package configuration. The primary distinction is product status: LMC6484AIMX/NOPB is active and available in production quantities. This part is recommended as the primary replacement for existing LMC6484AIMX applications without design modification.

Functional Alternatives (Package-Compatible CMOS Amplifiers):

TS914AIDT, TS914AIYDT, and TS914IDT are STMicroelectronics CMOS amplifiers that maintain the 14-SOIC package form factor and four-circuit configuration. These parts are AEC-Q100 qualified for automotive applications and feature extended operating temperature range (-40°C to 125°C). All three variants meet the minimum supply voltage requirement (2.7V minimum) and support the maximum supply voltage (16V maximum). The TS914 series exhibits lower supply current consumption (230 µA versus 2.6 mA) and higher output current capability (60 mA per channel versus 30 mA). These characteristics make the TS914 series suitable for applications requiring reduced power consumption or higher output drive capability. Electrical performance differences include lower slew rate (1 V/µs versus 1.3 V/µs) and slightly lower gain bandwidth product (1.4 MHz versus 1.5 MHz).

Alternative Package Configuration:

MC33204DTBR2G is an onsemi general-purpose amplifier with four circuits and rail-to-rail output in 14-TSSOP package. This part is not pin-compatible with the 14-SOIC package and requires PCB redesign. MC33204DTBR2G offers superior gain bandwidth product (2.2 MHz) and higher output current per channel (80 mA). The supply voltage range (1.8V to 12V maximum) is narrower than the LMC6484AIMX, requiring verification for applications utilizing the full 15.5V maximum supply specification.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. LMC6484AIMX/NOPB offers the highest inventory availability (55,400 pieces) among direct equivalents. TS914IDT provides the largest inventory of the TS914 series (37,102 pieces). Selection should prioritize product status (active versus obsolete), supply chain availability, and compliance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can LMC6484AIMX/NOPB be used as a direct replacement for LMC6484AIMX?

A: Yes. LMC6484AIMX/NOPB is electrically and mechanically identical to LMC6484AIMX. The primary difference is product status: LMC6484AIMX/NOPB is active and available in production quantities, while LMC6484AIMX is obsolete. No design changes are required for substitution.

Q: What are the key differences between LMC6484AIMX and TS914AIDT?

A: Both parts are CMOS amplifiers with four circuits in 14-SOIC packages and rail-to-rail output. Key differences include: TS914AIDT has lower supply current (230 µA versus 2.6 mA), higher output current per channel (60 mA versus 30 mA), lower slew rate (1 V/µs versus 1.3 V/µs), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). TS914AIDT is AEC-Q100 qualified for automotive applications.

Q: Is MC33204DTBR2G compatible with LMC6484AIMX in existing PCB designs?

A: No. MC33204DTBR2G uses 14-TSSOP package while LMC6484AIMX uses 14-SOIC package. These packages have different pin spacing and physical dimensions, requiring PCB redesign. Pin-to-pin compatibility cannot be assumed.

Q: What is the supply voltage compatibility range for substitute parts?

A: LMC6484AIMX operates from 3V to 15.5V. LMC6484AIMX/NOPB maintains this range. TS914 series operates from 2.7V to 16V, providing broader compatibility. MC33204DTBR2G operates from 1.8V to 12V, which does not support the full 15.5V maximum of the original part.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (LMC6484AIMX/NOPB, MC33204DTBR2G, TS914AIDT, TS914AIYDT, TS914IDT) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute part offers the lowest power consumption?

A: TS914AIDT, TS914AIYDT, and TS914IDT all consume 230 µA supply current (x4 channels), compared to 2.6 mA for LMC6484AIMX. MC33204DTBR2G consumes 900 µA. The TS914 series provides the lowest power consumption option.

Q: Can TS914 series parts be used in applications requiring the full 15.5V supply voltage?

A: Yes. TS914 series supports supply voltage up to 16V maximum, which exceeds the 15.5V maximum of LMC6484AIMX. No supply voltage limitation exists for TS914 substitution.

Q: What is the difference between TS914AIDT, TS914AIYDT, and TS914IDT?

A: All three are CMOS amplifiers with identical electrical specifications and 14-SOIC packages. TS914AIDT and TS914IDT are available in Cut Tape (CT) and Digi-Reel packaging. TS914AIYDT packaging is not specified. TS914AIDT has input offset voltage of 5 mV, while TS914IDT has 10 mV input offset voltage. All three are AEC-Q100 qualified.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q100) is required only for applications in automotive environments. TS914AIDT, TS914AIYDT, and TS914IDT carry AEC-Q100 qualification. LMC6484AIMX/NOPB and MC33204DTBR2G do not carry automotive qualification. Verify application requirements before selecting a substitute part.

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