LMC6484IM Equivalent & Substitute Parts

Part Overview

The LMC6484IM is a CMOS Amplifier 4 Circuit Rail-to-Rail operational amplifier manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is classified as obsolete, with 3320 units available in current inventory. The LMC6484IM operates across a supply voltage range of 3V to 15.5V and is suitable for applications requiring low input bias current and rail-to-rail output capability. Due to its obsolete status, equivalent and substitute parts with active product status are necessary for new designs and long-term supply chain continuity.

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
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMC6484IM is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: CMOS
Number of Circuits: 4
Output Type: Rail-to-Rail
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Slew Rate: Minimum 1.0 V/µs (LMC6484IM: 1.3 V/µs)
Gain Bandwidth Product: Minimum 1.4 MHz (LMC6484IM: 1.5 MHz)
Current - Input Bias: Maximum 80 nA (LMC6484IM: 0.02 pA)
Voltage - Input Offset: Maximum 10 mV (LMC6484IM: 110 µV)
Voltage - Supply Span: Minimum 2.7V to Maximum 16V (LMC6484IM: 3V to 15.5V)
Operating Temperature: Minimum -40°C to Maximum 125°C (LMC6484IM: -40°C to 85°C)

Substitute parts must maintain electrical compatibility within these parameter ranges and support the same 14-SOIC package footprint. Parts with active product status and RoHS3 compliance are preferred for new designs.

Parameter Comparison

Parameter	LMC6484IM	LMC6484IMX/NOPB	NCV33204DR2G	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	1.0	1.0	1.0	1.0
Gain Bandwidth Product (MHz)	1.5	1.5	2.2	1.4	1.4	1.4
Current - Input Bias	0.02 pA	0.02 pA	80 nA	1 pA	1 pA	1 pA
Voltage - Input Offset	110 µV	110 µV	10 mV	5 mV	5 mV	10 mV
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)	3 V	3 V	1.8 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	15.5 V	15.5 V	12 V	16 V	16 V	16 V
Operating Temperature	-40 to 85°C	-40 to 85°C	-55 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	—	—	Automotive	Automotive	Automotive	Automotive
Qualification	—	—	AEC-Q100	AEC-Q100	AEC-Q100	AEC-Q100
Inventory (Pcs)	3320	15800	18223	17885	3100	37102

Engineering Selection Recommendations

Primary Recommendation: LMC6484IMX/NOPB

The LMC6484IMX/NOPB is the manufacturer-recommended direct equivalent from Texas Instruments. It maintains identical electrical specifications to the LMC6484IM while offering active product status and ROHS3 compliance. The primary difference is packaging format (Tape & Reel vs. Tube), which does not affect electrical performance. This part is suitable for direct replacement in existing designs and provides the highest specification match with 15800 units in inventory.

Secondary Recommendation: TS914AIDT or TS914IDT

The TS914AIDT and TS914IDT from STMicroelectronics are CMOS 4-circuit rail-to-rail amplifiers in 14-SOIC packaging with active product status and AEC-Q100 automotive qualification. These parts operate within compatible supply voltage ranges (2.7V to 16V) and maintain the same package footprint. Key differences include lower supply current (230µA vs. 2.6mA) and higher output current per channel (60mA vs. 30mA). TS914IDT has the largest inventory (37102 units) and is suitable for applications where lower power consumption is beneficial.

Alternative Consideration: NCV33204DR2G

The NCV33204DR2G from onsemi is a general-purpose 4-circuit rail-to-rail amplifier with automotive qualification (AEC-Q100) and active product status. It offers enhanced gain bandwidth product (2.2MHz vs. 1.5MHz) and higher output current capability (80mA vs. 30mA). However, the minimum supply voltage is lower (1.8V), and input offset voltage is higher (10mV vs. 110µV). This part is suitable for applications requiring higher bandwidth and output current with relaxed input offset specifications.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete LMC6484IM. The STMicroelectronics TS914 series and onsemi NCV33204DR2G carry AEC-Q100 automotive qualification, providing additional reliability assurance for automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q1: Can the LMC6484IMX/NOPB be used as a direct replacement for the LMC6484IM?

A: Yes. The LMC6484IMX/NOPB is the manufacturer-recommended equivalent with identical electrical specifications. The only difference is packaging format (Tape & Reel vs. Tube), which does not affect circuit performance or pin compatibility.

Q2: What are the key differences between the LMC6484IM and the TS914 series?

A: The TS914 series (TS914AIDT, TS914AIYDT, TS914IDT) maintains CMOS amplifier type and 4-circuit rail-to-rail configuration in the same 14-SOIC package. Primary differences include lower slew rate (1.0 V/µs vs. 1.3 V/µs), lower gain bandwidth product (1.4 MHz vs. 1.5 MHz), and significantly lower supply current (230µA vs. 2.6mA). The TS914 series is suitable for power-sensitive applications.

Q3: Is the NCV33204DR2G compatible with the LMC6484IM?

A: The NCV33204DR2G is functionally compatible as a 4-circuit rail-to-rail amplifier in 14-SOIC packaging. However, it is classified as a general-purpose amplifier rather than CMOS type. It offers higher gain bandwidth product (2.2 MHz) and output current (80mA), but has higher input offset voltage (10mV vs. 110µV) and lower minimum supply voltage (1.8V vs. 3V). Compatibility depends on specific application requirements.

Q4: What is the significance of AEC-Q100 qualification?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability standards. The TS914 series and NCV33204DR2G carry this qualification, making them suitable for automotive and high-reliability applications. The LMC6484IM does not carry this qualification.

Q5: Which substitute part has the best inventory availability?

A: The TS914IDT has the largest inventory with 37102 units in stock, followed by NCV33204DR2G with 18223 units and LMC6484IMX/NOPB with 15800 units. The TS914AIYDT has the lowest inventory at 3100 units.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (LMC6484IMX/NOPB, NCV33204DR2G, TS914AIDT, TS914AIYDT, TS914IDT) are ROHS3 compliant. The original LMC6484IM is RoHS non-compliant, making substitution necessary for RoHS-regulated applications.

Q7: Can the TS914AIDT and TS914IDT be used interchangeably?

A: The TS914AIDT and TS914IDT are both CMOS 4-circuit rail-to-rail amplifiers in 14-SOIC packaging with identical electrical specifications except for input offset voltage (5mV vs. 10mV). They are functionally interchangeable in most applications. The TS914IDT has significantly higher inventory availability (37102 vs. 17885 units).

Q8: What is the difference between TS914AIYDT and TS914AIDT?

A: Both parts are identical in electrical specifications and package type. The primary difference is packaging format designation. Both are CMOS 4-circuit rail-to-rail amplifiers suitable for direct substitution of the LMC6484IM.

Q9: Should I choose a substitute based on lower supply current?

A: Lower supply current (TS914 series at 230µA vs. LMC6484IM at 2.6mA) is beneficial for battery-powered and power-constrained applications. However, selection should be based on complete application requirements including slew rate, gain bandwidth product, output current capability, and operating temperature range.

Q10: Are there any temperature range limitations with the substitute parts?

A: The LMC6484IM operates from -40°C to 85°C. All substitute parts extend the upper temperature limit to 125°C, providing broader operating range. The NCV33204DR2G extends the lower limit to -55°C. Verify that the extended temperature range is compatible with your application environment.

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