MCP6144T-E/SL Equivalent & Substitute Parts

Part Overview

The MCP6144T-E/SL is a general-purpose operational amplifier manufactured by Microchip Technology, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface-mount package. This device is classified as Active product status and is ROHS3 compliant. The MCP6144T-E/SL operates across a supply voltage range of 1.4 V to 6 V with an operating temperature range of -40°C to 125°C, making it suitable for low-power and wide-temperature applications.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for components with enhanced performance characteristics while maintaining functional compatibility within the application circuit.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	0.024	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	3	mV
Current - Supply (x4 Channels)	600	nA
Current - Output / Channel	20	mA
Voltage - Supply Span (Min)	1.4	V
Voltage - Supply Span (Max)	6	V
Operating Temperature	-40 to 125	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution compatibility for the MCP6144T-E/SL is determined by the following critical parameters:

Primary Substitution Criteria:

Number of circuits: 4 (quad configuration required)
Output type: Rail-to-rail operation
Package type: 14-SOIC or equivalent 14-pin surface-mount package
Mounting type: Surface mount
Operating temperature range: Minimum -40°C to 125°C coverage
Supply voltage span: Minimum 1.4 V to 6 V compatibility

Secondary Compatibility Factors:

Amplifier type classification (General Purpose, CMOS, or Voltage Feedback)
Slew rate and gain bandwidth product (performance enhancement acceptable)
Input bias current and input offset voltage (lower values acceptable)
Supply current consumption (lower values acceptable)
Output current per channel (equal or greater values acceptable)

Substitute parts are grouped into two categories: Direct Packaging Equivalents (identical 14-SOIC package) and Functional Equivalents (14-SOP package with compatible electrical specifications). Parts with enhanced performance parameters remain substitutable when core functional requirements are met.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (nA/µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
MCP6144T-E/SL	Microchip	General Purpose	0.024	100	1	3	600n	20	1.4	6	-40 to 125	14-SOIC	Active
MCP6144-E/SL	Microchip	General Purpose	0.024	100	1	3	600n	20	1.4	6	-40 to 125	14-SOIC	Active
LMV324QDR	Texas Instruments	General Purpose	1	1000	15	1.7	410µ	40	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324QD	Texas Instruments	General Purpose	1	1000	15	1.7	410µ	40	2.7	5.5	-40 to 125	14-SOIC	Last Time Buy
LMV324ID	Texas Instruments	General Purpose	1	1000	15	1.7	410µ	40	2.7	5.5	-40 to 125	14-SOIC	Last Time Buy
LMV324M/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	410µ	160	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324MX/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	410µ	160	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324MX	National Semiconductor	General Purpose	1	1000	15	1.7	410µ	160	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324IDR	UMW	Voltage Feedback	—	1000	10	0.8	45µ	25	2.1	5.5	-25 to 85	14-SOIC	Active
BU7244F-E2	Rohm Semiconductor	CMOS	0.4	900	1	1	360µ	12	1.8	5.5	-40 to 85	14-SOP	Active
LMR934F-GE2	Rohm Semiconductor	General Purpose	0.35	1400	5	1	250µ	90	1.8	5	-40 to 85	14-SOP	Active

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications):

MCP6144-E/SL is the direct equivalent of MCP6144T-E/SL, differing only in packaging format (Tube versus Tape & Reel). Both parts are manufactured by Microchip Technology with identical electrical specifications, operating temperature range (-40°C to 125°C), and ROHS3 compliance. Selection between these two depends solely on packaging and supply chain requirements.

Texas Instruments LMV324 Series (14-SOIC Package):

LMV324QDR, LMV324QD, LMV324ID, LMV324M/NOPB, and LMV324MX/NOPB are all quad general-purpose amplifiers in 14-SOIC packages with enhanced performance characteristics. These parts feature 10× higher gain bandwidth product (1 MHz versus 100 kHz) and 40× faster slew rate (1 V/µs versus 0.024 V/µs). All maintain the -40°C to 125°C operating temperature range and ROHS3 compliance. The minimum supply voltage requirement increases to 2.7 V, which is compatible with the MCP6144T-E/SL's 1.4 V to 6 V range for applications operating above 2.7 V. LMV324M/NOPB and LMV324MX/NOPB provide 4× higher output current per channel (160 mA versus 20 mA). LMV324QDR and LMV324QD are classified as Last Time Buy status; LMV324M/NOPB and LMV324MX/NOPB are Active status.

UMW LMV324IDR (14-SOIC Package):

LMV324IDR is a voltage feedback amplifier variant with 1 MHz gain bandwidth product and superior input offset voltage (0.8 mV versus 3 mV). This part is Active status and ROHS3 compliant. The operating temperature range is reduced to -25°C to 85°C, and minimum supply voltage is 2.1 V. Selection of this part requires verification that the application temperature range does not require operation below -25°C.

Rohm Semiconductor Alternatives (14-SOP Package):

BU7244F-E2 is a CMOS amplifier with 900 kHz gain bandwidth product and 0.4 V/µs slew rate. Operating temperature range is -40°C to 85°C. Minimum supply voltage is 1.8 V. Output current per channel is reduced to 12 mA. This part is suitable for applications where the upper temperature limit of 85°C is acceptable and output current requirements do not exceed 12 mA per channel.

LMR934F-GE2 is a general-purpose amplifier with 1.4 MHz gain bandwidth product and 90 mA output current per channel. Operating temperature range is -40°C to 85°C. Minimum supply voltage is 1.8 V. This part provides the highest output current capability among all substitutes. Selection requires verification that the application temperature range does not require operation above 85°C.

Compliance and Status Considerations:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, matching the primary part's regulatory requirements. Parts designated as Last Time Buy (LMV324QD, LMV324ID) should be evaluated for long-term supply chain stability if extended production is anticipated.

Frequently Asked Questions (FAQ)

Q: Can LMV324QDR be used as a direct replacement for MCP6144T-E/SL without circuit modification?

A: LMV324QDR is functionally compatible as a quad rail-to-rail amplifier in the same 14-SOIC package. However, the minimum supply voltage increases from 1.4 V to 2.7 V. Applications operating below 2.7 V require circuit redesign. The enhanced performance characteristics (1 MHz GBW versus 100 kHz, 1 V/µs slew rate versus 0.024 V/µs) are backward compatible and do not require modification for most general-purpose amplifier circuits.

Q: What is the difference between MCP6144T-E/SL and MCP6144-E/SL?

A: These parts are electrically identical. The difference is packaging format: MCP6144T-E/SL is supplied in Tape & Reel (TR) format, while MCP6144-E/SL is supplied in Tube format. Selection depends on manufacturing equipment compatibility and supply chain preferences.

Q: Why does LMV324IDR have a reduced operating temperature range (-25°C to 85°C)?

A: LMV324IDR is manufactured by UMW with different process specifications than the primary part. The reduced temperature range reflects the device's qualified operating limits. Applications requiring operation below -25°C or above 85°C must use alternative parts.

Q: Can BU7244F-E2 be used in applications requiring 20 mA output current per channel?

A: BU7244F-E2 provides only 12 mA output current per channel, which is insufficient for applications requiring 20 mA. Alternative parts such as LMV324M/NOPB (160 mA) or LMR934F-GE2 (90 mA) must be selected.

Q: What is the significance of the 14-SOP package used by Rohm Semiconductor parts?

A: The 14-SOP package is functionally equivalent to 14-SOIC but has a slightly larger width (4.40 mm versus 3.90 mm). PCB layout modifications are required to accommodate the larger package footprint. Electrical performance and pin configuration remain compatible.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts are ROHS3 compliant except LMV324MX (National Semiconductor version), which is RoHS non-compliant. For applications requiring RoHS compliance, use LMV324MX/NOPB (Texas Instruments version) instead.

Q: Which substitute part provides the best performance upgrade?

A: LMR934F-GE2 offers the highest gain bandwidth product (1.4 MHz) and output current per channel (90 mA). However, the operating temperature range is limited to -40°C to 85°C. For applications requiring full -40°C to 125°C operation, LMV324M/NOPB or LMV324MX/NOPB provide 1 MHz GBW and 160 mA output current.

Q: Can substitute parts be mixed in the same design?

A: Yes, different substitute parts can be used in different circuit locations if their individual specifications match the application requirements at each location. However, using identical part numbers throughout a design simplifies inventory management and reduces qualification complexity.

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