MCP6444T-E/SL Equivalent & Substitute Parts

Part Overview

The MCP6444T-E/SL is a CMOS 4-circuit operational amplifier manufactured by Microchip Technology, housed in a 14-SOIC surface mount package. This rail-to-rail amplifier operates across a supply voltage range of 1.4 V to 6 V and is designed for low-power applications with ultra-low input bias current (1 pA) and minimal supply current consumption (450 nA per channel). The device is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original MCP6444T-E/SL is unavailable, when alternative performance characteristics better suit application requirements, or when design flexibility demands components from different manufacturers while maintaining functional compatibility within the 14-SOIC package footprint and rail-to-rail output specification.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	MCP6444T-E/SL	—
Manufacturer	Microchip Technology	—
Number of Circuits	4	—
Amplifier Type	CMOS	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	1.4	V
Voltage - Supply Span (Max)	6	V
Operating Temperature	-40 to 125	°C
Slew Rate	0.003	V/µs
Gain Bandwidth Product	9	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	4.5	mV
Current - Supply	450	nA (x4 Channels)
Current - Output / Channel	22	mA
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution of the MCP6444T-E/SL is determined by strict adherence to the following criteria:

Primary Compatibility Requirements:

Number of Circuits: 4 (quad configuration)
Output Type: Rail-to-Rail
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C to 125°C minimum
Voltage Supply Span: Minimum 1.4 V to Maximum 6 V (or compatible subset)

Secondary Performance Parameters:

Slew Rate: 0.003 V/µs or greater
Gain Bandwidth Product: 9 kHz or greater
Current - Input Bias: 1 pA or lower
Voltage - Input Offset: 4.5 mV or lower
Current - Supply: 450 nA per channel or lower
Current - Output / Channel: 22 mA or greater

Compliance & Status:

Product Status: Active
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts listed below meet all primary compatibility requirements and maintain active product status with full RoHS3 compliance. Performance parameters vary across substitutes; selection depends on application-specific performance needs within the defined electrical envelope.

Parameter Comparison

Parameter	MCP6444T-E/SL	LMV324IDT	LMV324IYDT	TSV324AIYDT	TSV324IDT	TSV324IYDT	TSV994AIDT	TSV994IDT
Manufacturer	Microchip	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Number of Circuits	4	4	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	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	1.4 V	2.7 V	2.7 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V
Voltage - Supply Span (Max)	6 V	6 V	6 V	6 V	6 V	6 V	5.5 V	5.5 V
Operating Temperature	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
Slew Rate (V/µs)	0.003	0.45	0.45	0.6	0.6	0.6	10	10
Gain Bandwidth Product (MHz)	0.009	1.3	1.3	1.4	1.4	1.4	20	20
Current - Input Bias (pA)	1	16000	16000	70000	70000	70000	1	1
Voltage - Input Offset (mV)	4.5	0.1	0.1	0.1	0.2	0.2	0.1	0.1
Current - Supply (µA)	0.45	0.162	0.162	0.5	0.5	0.5	0.82	0.82
Current - Output / Channel (mA)	22	160	160	80	80	80	35	35
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
Product Status	Active	Active	Active	Active	Active	Active	Active	Active
Grade	Commercial	Commercial	Automotive	Automotive	Automotive	Automotive	Automotive	Automotive
Qualification	—	—	AEC-Q100	AEC-Q100	AEC-Q100	AEC-Q100	AEC-Q100	AEC-Q100

Engineering Selection Recommendations

LMV324IDT & LMV324IYDT (STMicroelectronics)

These general-purpose amplifiers provide significantly improved performance over the MCP6444T-E/SL with 1.3 MHz gain bandwidth product and 0.45 V/µs slew rate. The LMV324IDT is suitable for commercial applications, while LMV324IYDT carries AEC-Q100 automotive qualification. Both maintain active product status and ROHS3 compliance. Minimum supply voltage is 2.7 V, which restricts use in ultra-low-voltage applications below this threshold. Input bias current increases to 16 nA, and supply current reduces to 162 µA total, making these suitable for applications requiring faster signal processing with acceptable bias current performance.

TSV324AIYDT & TSV324IDT & TSV324IYDT (STMicroelectronics)

The TSV324 series offers intermediate performance with 1.4 MHz gain bandwidth product and 0.6 V/µs slew rate. TSV324AIYDT and TSV324IYDT carry AEC-Q100 automotive qualification; TSV324IDT is industrial-grade. All three maintain active status and ROHS3 compliance. Minimum supply voltage is 2.5 V. Input bias current is 70 nA with supply current of 500 µA total. These devices balance performance improvement and power consumption, suitable for applications requiring moderate bandwidth enhancement without extreme low-power constraints.

TSV994AIDT & TSV994IDT (STMicroelectronics)

The TSV994 series delivers the highest performance with 20 MHz gain bandwidth product and 10 V/µs slew rate, matching the MCP6444T-E/SL's ultra-low 1 pA input bias current. Both carry AEC-Q100 automotive qualification and maintain active status with ROHS3 compliance. Maximum supply voltage is 5.5 V (lower than MCP6444T-E/SL's 6 V maximum). Supply current is 820 µA total. These devices are appropriate for high-speed signal conditioning applications where bandwidth and slew rate are critical performance factors and the 1 pA input bias current specification is essential.

Compliance & Availability

All substitute parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Automotive-grade variants (LMV324IYDT, TSV324AIYDT, TSV324IDT, TSV324IYDT, TSV994AIDT, TSV994IDT) carry AEC-Q100 qualification. Commercial-grade LMV324IDT is available for non-automotive applications. Inventory levels vary; TSV994AIDT shows highest availability at 55,300 units.

Frequently Asked Questions (FAQ)

Q: Can I directly replace MCP6444T-E/SL with any of these substitute parts?

A: Direct replacement requires verification of three primary factors: (1) supply voltage range compatibility—the MCP6444T-E/SL operates from 1.4 V minimum, while most substitutes require 2.5 V or 2.7 V minimum; (2) performance requirements—if your application requires the MCP6444T-E/SL's ultra-low slew rate (0.003 V/µs) and 9 kHz bandwidth, substitutes with higher performance may introduce unwanted noise or instability; (3) output current requirements—if your load demands exceed 22 mA per channel, higher-output substitutes (LMV324 at 160 mA, TSV324 at 80 mA, TSV994 at 35 mA) are necessary. All substitutes share the 14-SOIC package and rail-to-rail output specification, ensuring mechanical and functional compatibility.

Q: What is the difference between commercial and automotive-grade versions?

A: Automotive-grade parts (LMV324IYDT, TSV324AIYDT, TSV324IDT, TSV324IYDT, TSV994AIDT, TSV994IDT) carry AEC-Q100 qualification, indicating compliance with automotive reliability and testing standards including temperature cycling, humidity, and electrostatic discharge requirements. Commercial-grade LMV324IDT does not carry this qualification. Selection depends on application environment; automotive applications require AEC-Q100 qualified parts, while industrial and consumer applications may use commercial-grade alternatives.

Q: Why does the MCP6444T-E/SL have such low slew rate and bandwidth compared to substitutes?

A: The MCP6444T-E/SL is optimized for ultra-low-power operation with minimal supply current (450 nA per channel) and ultra-low input bias current (1 pA). This design prioritizes power efficiency and precision over speed. Substitute parts trade increased power consumption for higher bandwidth and slew rate. The TSV994 series maintains the 1 pA input bias current while achieving 20 MHz bandwidth and 10 V/µs slew rate, but consumes 820 µA supply current—approximately 1,800 times higher than the MCP6444T-E/SL.

Q: What is the minimum supply voltage for each substitute?

A: MCP6444T-E/SL operates from 1.4 V minimum. LMV324IDT and LMV324IYDT require 2.7 V minimum. TSV324AIYDT, TSV324IDT, TSV324IYDT, TSV994AIDT, and TSV994IDT all require 2.5 V minimum. Applications operating below 2.5 V cannot use any of these substitutes; the original MCP6444T-E/SL is the only option in this voltage range.

Q: Are all these parts available in the same packaging?

A: Yes. All parts are housed in 14-SOIC (0.154", 3.90mm Width) surface mount packages. Pinout compatibility is maintained across all substitutes, allowing direct PCB replacement without layout modifications. However, packaging format differs: MCP6444T-E/SL is supplied in Tape & Reel (TR), while most substitutes are supplied in Cut Tape (CT) & Digi-Reel®, with TSV324IYDT available in Tape & Reel (TR).

Q: Which substitute should I choose for automotive applications?

A: For automotive applications, select from AEC-Q100 qualified parts: LMV324IYDT, TSV324AIYDT, TSV324IDT, TSV324IYDT, TSV994AIDT, or TSV994IDT. If ultra-low supply voltage (below 2.5 V) is required, no automotive-qualified substitute exists; the original MCP6444T-E/SL must be used. If high bandwidth is needed, TSV994AIDT or TSV994IDT are appropriate. If moderate performance with lower power consumption is acceptable, TSV324 series offers a balance.

Q: What happens if I use a substitute with higher slew rate than required?

A: Higher slew rate can introduce ringing, overshoot, and increased noise in sensitive analog circuits. If your application is optimized for the MCP6444T-E/SL's 0.003 V/µs slew rate, substitutes with 0.45 V/µs to 10 V/µs may require circuit redesign including additional filtering, compensation networks, or layout modifications to maintain signal integrity. Verify application performance through testing before production deployment.

Q: Can I mix different substitute parts in the same design?

A: Yes, since all parts share the 14-SOIC package and rail-to-rail output specification. However, mixing parts with different performance characteristics (slew rate, bandwidth, input bias current) across multiple op-amp stages may introduce performance inconsistencies. For matched-pair or quad-channel applications requiring uniform performance, use identical part numbers across all channels.

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