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MCP6144T-I/ST Equivalent & Substitute Parts
Part Overview
The MCP6144T-I/ST is a general purpose operational amplifier featuring four independent circuits in a 14-TSSOP surface mount package. This device is manufactured by Microchip Technology and is currently in active production status. The MCP6144T-I/ST operates across a supply voltage range of 1.4 V to 6 V with rail-to-rail output capability, making it suitable for low-voltage and battery-powered applications. Finding equivalent and substitute parts becomes necessary when addressing supply chain constraints, inventory availability, or specific application requirements that may benefit from alternative electrical characteristics while maintaining functional compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Microchip Technology | — |
| Part Number | MCP6144T-I/ST | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.024 | V/µs |
| Gain Bandwidth Product | 100 | kHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply | 600 | nA (x4 Channels) |
| Current - Output / Channel | 20 | mA |
| Voltage - Supply Span (Min) | 1.4 | V |
| Voltage - Supply Span (Max) | 6 | V |
| Operating Temperature | -40 to 85 | °C |
| Packaging Type | Tape & Reel (TR) | — |
| Product Status | Active | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the MCP6144T-I/ST are grouped into three categories based on substitution compatibility:
Category 1: Direct Packaging Equivalent The MCP6144-I/ST from Microchip Technology is functionally identical to the main part, differing only in packaging format (Tube versus Tape & Reel). This part maintains all electrical specifications and is suitable for direct substitution when packaging format is not a constraint.
Category 2: Electrical Equivalents with Enhanced Performance Parts including the OPA4348AIPWT, OPA4348AIPWR, and OPA4348AQPWRQ1 from Texas Instruments, as well as TSV624AIPT, TSV6294AIPT, and TSV6294IPT from STMicroelectronics, share the same 14-TSSOP package and four-circuit configuration with rail-to-rail output. These devices feature higher gain bandwidth products (1 MHz to 1.3 MHz versus 100 kHz), faster slew rates (0.35 V/µs to 0.5 V/µs versus 0.024 V/µs), and lower input offset voltages (0.8 mV to 1 mV versus 3 mV). These characteristics make them suitable substitutes for applications requiring improved frequency response and signal fidelity.
Category 3: Partial Equivalents with Functional Limitations The BD12734FVJ-E2 and LMR934FVJ-E2 from Rohm Semiconductor, and TLV4379IPWR from Texas Instruments, maintain the 14-TSSOP package and rail-to-rail output but differ in circuit count or supply voltage range. The TLV4379IPWR contains only one circuit versus four, limiting its use to applications requiring single-channel amplification. These parts are suitable only when application requirements align with their specific electrical and circuit configurations.
Key Parameters Determining Substitution:
- Package type: 14-TSSOP (0.173", 4.40mm Width)
- Mounting type: Surface Mount
- Output type: Rail-to-Rail
- Number of circuits: 4 (for full equivalence)
- Supply voltage range compatibility: Minimum 1.4 V to 6 V overlap
- Operating temperature range: -40°C to 85°C minimum
- RoHS3 compliance and MSL rating
Parameter Comparison
| Parameter | MCP6144T-I/ST | MCP6144-I/ST | OPA4348AIPWT | OPA4348AQPWRQ1 | TSV624AIPT | TSV6294AIPT | BD12734FVJ-E2 | LMR934FVJ-E2 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Texas Instruments | Texas Instruments | STMicroelectronics | STMicroelectronics | Rohm | Rohm |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Amplifier Type | General Purpose | General Purpose | CMOS | CMOS | CMOS | CMOS | General Purpose | General Purpose |
| 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 | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP-BJ | 14-TSSOP-BJ |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Slew Rate (V/µs) | 0.024 | 0.024 | 0.5 | 0.5 | 0.14 | 0.5 | 0.4 | 0.35 |
| Gain Bandwidth Product (kHz) | 100 | 100 | 1000 | 1000 | 420 | 1300 | 1000 | 1400 |
| Current - Input Bias (pA) | 1 | 1 | 0.5 | 8 | 1 | 1 | 50 | 5 |
| Voltage - Input Offset (mV) | 3 | 3 | 1 | 1 | 0.8 | 0.8 | 1 | 1 |
| Current - Supply (µA) | 0.6 | 0.6 | 45 | 45 | 29 | 29 | 1200 | 250 |
| Current - Output / Channel (mA) | 20 | 20 | 10 | 10 | 74 | 74 | 12 | 90 |
| Voltage - Supply Span Min (V) | 1.4 | 1.4 | 2.1 | 2.1 | 1.5 | 1.5 | 1.8 | 1.8 |
| Voltage - Supply Span Max (V) | 6 | 6 | 5.5 | 5.5 | 5.5 | 5.5 | 5 | 5 |
| Operating Temperature (°C) | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 2 (1 Year) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Direct Substitution (No Design Changes Required): The MCP6144-I/ST is the primary direct substitute for MCP6144T-I/ST. Both parts are manufactured by Microchip Technology, share identical electrical specifications, and maintain active product status with ROHS3 compliance and MSL 1 rating. The only difference is packaging format (Tube versus Tape & Reel). This substitution requires no circuit modifications and is suitable for all applications currently using the MCP6144T-I/ST.
Performance-Enhanced Substitution (Design Verification Recommended): The OPA4348AIPWT, OPA4348AIPWR, and OPA4348AQPWRQ1 from Texas Instruments, along with TSV624AIPT, TSV6294AIPT, and TSV6294IPT from STMicroelectronics, offer improved electrical performance with higher gain bandwidth products and faster slew rates. These parts maintain the 14-TSSOP package, four-circuit configuration, and rail-to-rail output. However, they feature higher supply current consumption and different input bias current characteristics. The OPA4348AQPWRQ1 includes automotive qualification (AEC-Q100) and extended temperature range (-40°C to 125°C), making it suitable for automotive and industrial applications. All these parts maintain active product status and ROHS3 compliance.
Conditional Substitution (Application-Specific Evaluation Required): The BD12734FVJ-E2 and LMR934FVJ-E2 from Rohm Semiconductor are suitable substitutes only when application requirements align with their specific electrical characteristics. The BD12734FVJ-E2 features lower input bias current (50 nA) but higher supply current (1.2 mA). The LMR934FVJ-E2 provides the highest output current per channel (90 mA) among all substitutes. Both maintain the 14-TSSOP package and four-circuit configuration with active product status and ROHS3 compliance.
Not Recommended for Direct Substitution: The TLV4379IPWR contains only one circuit versus four, making it unsuitable for applications requiring four independent amplifier channels. This part is listed only for reference when single-channel amplification is required.
Frequently Asked Questions (FAQ)
Q: Can I use MCP6144-I/ST as a direct replacement for MCP6144T-I/ST? A: Yes. The MCP6144-I/ST is a direct electrical equivalent differing only in packaging format (Tube versus Tape & Reel). Both parts are manufactured by Microchip Technology with identical specifications, active product status, ROHS3 compliance, and MSL 1 rating. No circuit modifications are required.
Q: What are the main differences between the MCP6144T-I/ST and the OPA4348AIPWT? A: Both parts feature four circuits in a 14-TSSOP package with rail-to-rail output. The OPA4348AIPWT offers superior performance with a gain bandwidth product of 1 MHz (versus 100 kHz), slew rate of 0.5 V/µs (versus 0.024 V/µs), and lower input offset voltage of 1 mV (versus 3 mV). However, the OPA4348AIPWT has higher supply current consumption (45 µA versus 600 nA) and a higher minimum supply voltage (2.1 V versus 1.4 V). The OPA4348AIPWT is suitable for applications requiring higher frequency response and faster signal transitions.
Q: Are all substitute parts compatible with the same PCB layout? A: All substitute parts use the 14-TSSOP package with identical pin spacing and dimensions (0.173", 4.40mm Width). The BD12734FVJ-E2 and LMR934FVJ-E2 use a variant designation (14-TSSOP-BJ) but maintain the same physical footprint. PCB layout compatibility is confirmed for all listed substitutes.
Q: Which substitute part has the lowest power consumption? A: The MCP6144-I/ST maintains the lowest supply current at 600 nA (x4 Channels), identical to the main part MCP6144T-I/ST. Among other substitutes, the TSV624AIPT and TSV6294AIPT from STMicroelectronics offer relatively low supply current at 29 µA, making them suitable for battery-powered applications requiring improved performance over the original part.
Q: Can I use OPA4348AQPWRQ1 in automotive applications? A: Yes. The OPA4348AQPWRQ1 is qualified to AEC-Q100 automotive standards and carries an automotive grade designation. It maintains active product status, ROHS3 compliance, and an extended operating temperature range of -40°C to 125°C. This part is specifically designed for automotive and industrial applications requiring higher reliability standards.
Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: MSL ratings indicate the maximum time a component can be exposed to moisture before soldering. MSL 1 (Unlimited) means no time restriction, while MSL 2 (1 Year) and MSL 3 (168 Hours) impose specific storage and handling requirements. The MCP6144T-I/ST and most substitutes carry MSL 1 rating, providing maximum flexibility in storage and handling. The OPA4348AIPWT and OPA4348AIPWR carry MSL 2, and the OPA4348AQPWRQ1 carries MSL 3, requiring more careful moisture control during storage and assembly.
Q: Which substitute offers the highest output current per channel? A: The LMR934FVJ-E2 from Rohm Semiconductor provides the highest output current per channel at 90 mA, compared to 20 mA for the MCP6144T-I/ST. The TSV624AIPT and TSV6294AIPT also offer high output current at 74 mA per channel. These parts are suitable for applications requiring higher load driving capability.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, meeting environmental and regulatory requirements for lead-free and restricted substance compliance. This ensures compatibility with modern manufacturing standards and environmental regulations.
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