MCP624T-E/ST Equivalent & Substitute Parts

Part Overview

The MCP624T-E/ST is a general-purpose operational amplifier manufactured by Microchip Technology, featuring four independent circuits in a 14-TSSOP surface-mount package. This rail-to-rail amplifier operates across a 2.5 V to 5.5 V supply range with a gain bandwidth product of 20 MHz and slew rate of 10 V/µs, making it suitable for low-power analog signal processing applications. The device is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1) and maintains active product status. Equivalent and substitute parts are identified based on matching functional parameters, package compatibility, and electrical specifications that permit direct circuit substitution.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Amplifier Type	General Purpose	—	Defines functional category
Number of Circuits	4	Circuits	Must match for pin-compatible substitution
Output Type	Rail-to-Rail	—	Determines output swing capability
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—	Physical and electrical compatibility
Voltage - Supply Span (Min)	2.5 V	V	Minimum operating voltage requirement
Voltage - Supply Span (Max)	5.5 V	V	Maximum operating voltage rating
Operating Temperature	-40°C ~ 125°C	°C	Temperature range compatibility
Mounting Type	Surface Mount	—	Assembly process compatibility
RoHS Status	ROHS3 Compliant	—	Environmental and regulatory compliance

Substitute Part Grouping Explanation

Substitution of the MCP624T-E/ST is determined by the following critical parameters:

Primary Substitution Criteria:

Four independent amplifier circuits in single package
14-TSSOP surface-mount package with 0.173" width and 4.40mm pitch
Rail-to-rail output configuration
Supply voltage range compatibility (minimum 2.5 V, maximum 5.5 V)
Operating temperature range (-40°C to 125°C or compatible subset)
ROHS3 compliance and MSL 1 rating

Secondary Compatibility Factors:

Gain bandwidth product (20 MHz for MCP624T-E/ST; lower values acceptable for reduced-bandwidth applications)
Slew rate (10 V/µs for MCP624T-E/ST; lower values acceptable for non-time-critical circuits)
Input bias current and offset voltage (lower values indicate improved performance but do not prevent substitution)
Output current capability per channel (70 mA for MCP624T-E/ST; lower values require load analysis)
Supply current consumption (2.5 mA per channel for MCP624T-E/ST; lower values preferred for power-constrained designs)

Substitutes are grouped into two categories: General-Purpose Amplifiers (matching the MCP624T-E/ST functional profile) and CMOS Amplifiers (lower power consumption, different input bias characteristics).

Parameter Comparison

Parameter	MCP624T-E/ST	BD12734FVJ-E2	LMR934FVJ-E2	LMV324Q1MTX/NOPB	LMV324Q3MT/NOPB	LMV344IPW	LMV344IPWR	OPA4348AQPWRQ1
Manufacturer	Microchip Technology	Rohm Semiconductor	Rohm Semiconductor	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Number of Circuits	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	CMOS
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-TSSOP	14-TSSOP-BJ	14-TSSOP-BJ	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Voltage - Supply Span (Min)	2.5 V	1.8 V	1.8 V	2.7 V	2.7 V	2.5 V	2.5 V	2.1 V
Voltage - Supply Span (Max)	5.5 V	5 V	5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Slew Rate	10 V/µs	0.4 V/µs	0.35 V/µs	1 V/µs	1 V/µs	1 V/µs	1 V/µs	0.5 V/µs
Gain Bandwidth Product	20 MHz	1 MHz	1.4 MHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz
Current - Input Bias	5 pA	50 nA	5 nA	15 nA	15 nA	1 pA	1 pA	8 pA
Voltage - Input Offset	200 µV	1 mV	1 mV	1.7 mV	1.7 mV	250 µV	250 µV	1 mV
Current - Supply	2.5 mA (x4)	1.2 mA	250 µA	410 µA (x4)	410 µA (x4)	107 µA (x4)	107 µA (x4)	45 µA (x4)
Current - Output / Channel	70 mA	12 mA	90 mA	160 mA	160 mA	113 mA	113 mA	10 mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
Product Status	Active	Active	Active	Active	Active	Last Time Buy	Active	Active
Automotive Grade / AEC-Q100	—	—	—	Yes	Yes	—	—	Yes

Engineering Selection Recommendations

Category 1: General-Purpose Amplifier Substitutes (Matched Functional Profile)

LMV324Q1MTX/NOPB and LMV324Q3MT/NOPB (Texas Instruments LMV® Series)

Both devices maintain the four-circuit, rail-to-rail configuration with 14-TSSOP packaging
Supply voltage range (2.7 V to 5.5 V) overlaps with MCP624T-E/ST requirements
LMV324Q1MTX/NOPB supports full -40°C to 125°C temperature range; LMV324Q3MT/NOPB limited to -40°C to 85°C
Both carry AEC-Q100 automotive qualification and active product status
Output current per channel (160 mA) exceeds MCP624T-E/ST (70 mA), providing design margin
Lower gain bandwidth product (1 MHz vs. 20 MHz) and slew rate (1 V/µs vs. 10 V/µs) suitable for applications not requiring high-frequency performance
Packaging: LMV324Q1MTX/NOPB supplied in Tape & Reel; LMV324Q3MT/NOPB in Tube

BD12734FVJ-E2 (Rohm Semiconductor)

Four-circuit general-purpose amplifier in 14-TSSOP-BJ package variant
Supply range (1.8 V to 5 V) extends below MCP624T-E/ST minimum but covers standard 5 V operation
Operating temperature limited to -40°C to 85°C
Significantly reduced slew rate (0.4 V/µs) and gain bandwidth product (1 MHz) restrict use to low-frequency applications
Output current per channel (12 mA) substantially lower than MCP624T-E/ST; requires load verification
Active product status with ROHS3 compliance
Packaging: Cut Tape & Digi-Reel®

LMR934FVJ-E2 (Rohm Semiconductor)

Four-circuit general-purpose amplifier in 14-TSSOP-BJ package variant
Supply range (1.8 V to 5 V) extends below MCP624T-E/ST minimum
Operating temperature limited to -40°C to 85°C
Slew rate (0.35 V/µs) and gain bandwidth product (1.4 MHz) lower than MCP624T-E/ST
Output current per channel (90 mA) exceeds MCP624T-E/ST (70 mA)
Supply current consumption (250 µA) significantly lower than MCP624T-E/ST (2.5 mA per channel), advantageous for power-constrained applications
Active product status with ROHS3 compliance
Packaging: Cut Tape & Digi-Reel®

Category 2: CMOS Amplifier Substitutes (Lower Power, Different Input Characteristics)

LMV344IPW and LMV344IPWR (Texas Instruments LMV® Series)

Four-circuit CMOS amplifier in 14-TSSOP package
Supply voltage range (2.5 V to 5.5 V) matches MCP624T-E/ST exactly
Full -40°C to 125°C operating temperature range supported
Extremely low input bias current (1 pA) compared to MCP624T-E/ST (5 pA)
Supply current consumption (107 µA per channel) substantially lower than MCP624T-E/ST (2.5 mA per channel)
Output current per channel (113 mA) exceeds MCP624T-E/ST (70 mA)
Slew rate (1 V/µs) and gain bandwidth product (1 MHz) lower than MCP624T-E/ST
LMV344IPW: Last Time Buy status; LMV344IPWR: Active product status
Packaging: LMV344IPW in Tube; LMV344IPWR in Cut Tape & Digi-Reel®

OPA4348AQPWRQ1 (Texas Instruments)

Four-circuit CMOS amplifier in 14-TSSOP package
Supply voltage range (2.1 V to 5.5 V) extends below MCP624T-E/ST minimum
Full -40°C to 125°C operating temperature range supported
AEC-Q100 automotive qualification and active product status
Supply current consumption (45 µA per channel) lowest among all substitutes
Output current per channel (10 mA) substantially lower than MCP624T-E/ST; requires load analysis
Moisture sensitivity level (MSL 3, 168 hours) higher than MCP624T-E/ST (MSL 1, unlimited)
Slew rate (0.5 V/µs) and gain bandwidth product (1 MHz) lower than MCP624T-E/ST
Packaging: Tape & Reel

Selection Guidance:

For applications requiring full -40°C to 125°C temperature range with active product status: LMV324Q1MTX/NOPB, LMV344IPWR, or OPA4348AQPWRQ1
For power-constrained designs: LMR934FVJ-E2, LMV344IPWR, or OPA4348AQPWRQ1
For high output current requirements: LMR934FVJ-E2, LMV324Q1MTX/NOPB, LMV324Q3MT/NOPB, or LMV344IPWR
For automotive-qualified designs: LMV324Q1MTX/NOPB, LMV324Q3MT/NOPB, or OPA4348AQPWRQ1
For applications limited to -40°C to 85°C: BD12734FVJ-E2, LMR934FVJ-E2, or LMV324Q3MT/NOPB

Frequently Asked Questions (FAQ)

Q1: Can I directly replace MCP624T-E/ST with any of the listed substitutes without circuit modification?

A: Direct replacement is possible only when the substitute meets all critical parameters: four circuits, 14-TSSOP package, rail-to-rail output, and compatible supply voltage range. However, differences in slew rate, gain bandwidth product, and output current may require load analysis and frequency response verification. Substitutes with lower slew rates or bandwidth are suitable only for applications not requiring high-frequency performance.

Q2: What is the difference between 14-TSSOP and 14-TSSOP-BJ packaging?

A: Both are 14-pin thin shrink small-outline packages with 0.173" width and 4.40mm pitch, suitable for surface-mount assembly. The "-BJ" designation indicates a Rohm Semiconductor variant. Pin assignments and electrical compatibility are maintained across these package variants, permitting direct substitution on PCBs designed for 14-TSSOP footprints.

Q3: Why do some substitutes have lower operating temperature ranges (-40°C to 85°C instead of -40°C to 125°C)?

A: Operating temperature range reflects the device's thermal design and qualification testing. Devices rated to 85°C maximum are suitable for applications where ambient or junction temperatures do not exceed this limit. For applications requiring operation up to 125°C, select substitutes with matching temperature specifications: LMV324Q1MTX/NOPB, LMV344IPW, LMV344IPWR, or OPA4348AQPWRQ1.

Q4: What does "Last Time Buy" product status mean for LMV344IPW?

A: Last Time Buy indicates the manufacturer has announced end-of-life for this device. Existing inventory may be available, but future production is not guaranteed. For new designs or long-term production requirements, select alternatives with Active product status: LMV344IPWR (same electrical specifications, different packaging) or other listed substitutes.

Q5: How do I determine if a substitute with lower output current capability is suitable for my application?

A: Compare the maximum load current required by your circuit against the substitute's output current per channel specification. MCP624T-E/ST provides 70 mA per channel; OPA4348AQPWRQ1 provides only 10 mA. If your load exceeds the substitute's capability, the device will enter current-limiting mode, potentially distorting the output signal. Verify load impedance and required output swing before selecting a lower-current substitute.

Q6: What is the significance of input bias current differences (5 pA for MCP624T-E/ST vs. 1 pA for LMV344 series)?

A: Input bias current affects circuit accuracy in high-impedance applications. Lower input bias current (1 pA) reduces errors in precision instrumentation and sensor interfaces. For general-purpose applications with moderate impedance levels, the difference is negligible. For high-impedance circuits (>1 MΩ), select substitutes with lower input bias current: LMV344IPW or LMV344IPWR.

Q7: Why is supply current consumption important when selecting a substitute?

A: Supply current directly impacts power dissipation and battery life in portable or power-constrained applications. MCP624T-E/ST consumes 2.5 mA per channel (10 mA total for four channels). LMR934FVJ-E2 consumes only 250 µA per channel (1 mA total), reducing power consumption by 90%. For battery-powered designs, select low-power substitutes: LMR934FVJ-E2, LMV344IPWR, or OPA4348AQPWRQ1.

Q8: Are all listed substitutes ROHS3 compliant?

A: Yes, all listed substitutes carry ROHS3 compliance certification. All devices also maintain MSL 1 (unlimited moisture sensitivity) rating except OPA4348AQPWRQ1, which carries MSL 3 (168 hours). MSL 3 requires controlled storage and handling to prevent moisture absorption during manufacturing.

Q9: Which substitutes are suitable for automotive applications?

A: Three substitutes carry AEC-Q100 automotive qualification: LMV324Q1MTX/NOPB, LMV324Q3MT/NOPB, and OPA4348AQPWRQ1. These devices have undergone automotive-grade testing and reliability screening. For non-automotive applications, all listed substitutes are acceptable.

Q10: What packaging options are available for the recommended substitutes?

A: Packaging options include Tape & Reel (TR), Cut Tape & Digi-Reel® (CT), and Tube. Tape & Reel is standard for high-volume automated assembly. Cut Tape & Digi-Reel® suits lower-volume production or mixed-component orders. Tube packaging is used for manual assembly or small quantities. Verify packaging compatibility with your procurement and assembly processes before finalizing part selection.

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