LMC6484IM/NOPB Equivalent & Substitute Parts

Part Overview

The LMC6484IM/NOPB is a CMOS operational amplifier featuring four independent circuits in a 14-SOIC surface mount package. This device operates across a wide supply voltage range (3V to 15.5V) and delivers rail-to-rail output capability with low input bias current (0.02 pA). The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute components is necessary to ensure design continuity and maintain supply chain reliability for applications requiring CMOS amplifier functionality with these electrical and mechanical specifications.

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
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMC6484IM/NOPB is determined by strict alignment of 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
Gain Bandwidth Product: minimum 1.4 MHz
Current - Input Bias: maximum 1 pA
Voltage - Input Offset: maximum 110 µV
Current - Output / Channel: minimum 30 mA
Voltage - Supply Span: minimum 2.7V to maximum 16V (encompasses 3V to 15.5V range)
Operating Temperature: minimum -40°C to maximum 85°C

The substitute parts listed below meet or exceed these criteria within the allowed electrical and mechanical parameter boundaries for this product category.

Parameter Comparison

Parameter	LMC6484IM/NOPB	LMC6484IMX/NOPB	TS914AIDT	TS914AIYDT	TS914IDT	Unit
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	—
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	—
Number of Circuits	4	4	4	4	4	—
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	—
Slew Rate	1.3	1.3	1.0	1.0	1.0	V/µs
Gain Bandwidth Product	1.5	1.5	1.4	1.4	1.4	MHz
Current - Input Bias	0.02	0.02	1	1	1	pA
Voltage - Input Offset	110	110	5	5	10	µV
Current - Output / Channel	30	30	60	60	60	mA
Voltage - Supply Span (Min)	3	3	2.7	2.7	2.7	V
Voltage - Supply Span (Max)	15.5	15.5	16	16	16	V
Operating Temperature	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	—
Product Status	Last Time Buy	Active	Active	Active	Active	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

LMC6484IMX/NOPB (Texas Instruments)

This part is the manufacturer-recommended direct equivalent. It maintains identical electrical specifications to the LMC6484IM/NOPB while offering active product status and higher inventory availability (15,800 pcs). The primary difference is packaging format: LMC6484IMX/NOPB is supplied in Cut Tape and Digi-Reel format, whereas the original part is supplied in Tube. Both are ROHS3 compliant with MSL 1 rating. Selection of this part eliminates supply chain risk associated with Last Time Buy status while preserving all electrical and mechanical compatibility.

TS914AIDT (STMicroelectronics)

This part qualifies as a functional substitute with automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C). Electrical parameters meet or exceed substitution criteria: slew rate 1.0 V/µs, gain bandwidth product 1.4 MHz, input bias current 1 pA, and output current 60 mA per channel. Supply voltage range (2.7V to 16V) encompasses the original specification. Inventory availability is substantial (37,102 pcs). This part is suitable for applications where automotive qualification and extended temperature operation provide design benefits.

TS914AIYDT (STMicroelectronics)

This part is functionally equivalent to TS914AIDT with identical electrical specifications and automotive-grade qualification (AEC-Q100). The primary distinction is packaging designation and lower inventory availability (3,100 pcs). Extended operating temperature range (-40°C to 125°C) and all electrical parameters align with substitution criteria. Selection is appropriate when automotive qualification is required and inventory constraints are not limiting.

TS914IDT (STMicroelectronics)

This part meets substitution criteria with automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C). Electrical specifications are equivalent to other TS914 variants with one exception: voltage input offset is 10 mV (compared to 5 mV for TS914AIDT and TS914AIYDT). All other parameters—slew rate 1.0 V/µs, gain bandwidth product 1.4 MHz, input bias current 1 pA, output current 60 mA per channel—meet substitution requirements. Highest inventory availability (37,102 pcs) supports supply chain continuity. This part is suitable for applications where the 10 mV input offset specification is acceptable.

Frequently Asked Questions (FAQ)

Q: Can LMC6484IMX/NOPB directly replace LMC6484IM/NOPB in existing designs?

A: Yes. LMC6484IMX/NOPB is the manufacturer-recommended equivalent with identical electrical specifications, package type (14-SOIC), and compliance ratings (ROHS3, MSL 1). The only difference is packaging format (Cut Tape/Digi-Reel vs. Tube). No circuit redesign is required.

Q: What is the primary advantage of selecting TS914 variants over LMC6484IMX/NOPB?

A: TS914 variants (TS914AIDT, TS914AIYDT, TS914IDT) offer automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). These features are beneficial for automotive and industrial applications requiring higher temperature operation and quality assurance certification.

Q: Are there electrical performance differences between TS914AIDT and TS914IDT?

A: The primary difference is voltage input offset: TS914AIDT specifies 5 mV maximum, while TS914IDT specifies 10 mV maximum. All other electrical parameters (slew rate, gain bandwidth product, input bias current, output current, supply voltage range) are identical. Selection depends on input offset voltage tolerance requirements for the application.

Q: Is the 14-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use 14-SOIC package with 0.154" (3.90mm) width. Pin configuration and PCB footprint are compatible. Surface mount assembly processes require no modification.

Q: What is the significance of Last Time Buy status for LMC6484IM/NOPB?

A: Last Time Buy status indicates the manufacturer will discontinue production. Current inventory (1,250 pcs) represents the final available stock. Transition to an active substitute part (LMC6484IMX/NOPB or TS914 variants) is necessary to ensure long-term design support and supply availability.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. LMC6484IMX/NOPB, TS914AIDT, TS914AIYDT, and TS914IDT are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Compliance documentation is consistent across all options.

Q: Which substitute part offers the highest output current capability?

A: TS914 variants (TS914AIDT, TS914AIYDT, TS914IDT) provide 60 mA output current per channel, compared to 30 mA for LMC6484 variants. This increased capability may benefit applications requiring higher load drive current.

Q: Can TS914 parts operate at the original supply voltage range (3V to 15.5V)?

A: Yes. TS914 variants specify supply voltage range of 2.7V to 16V, which encompasses and exceeds the original 3V to 15.5V specification. Full compatibility is confirmed.

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