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MCP6494T-E/ST Equivalent & Substitute Parts
Part Overview
The MCP6494T-E/ST is a general-purpose operational amplifier manufactured by Microchip Technology, configured as a 4-circuit rail-to-rail amplifier in a 14-TSSOP surface mount package. This device operates across a supply voltage range of 2.4 V to 5.5 V with an operating temperature range of -40°C to 125°C. The part is currently in active production status with 3,820 units in stock. Substitute parts are identified to address application requirements including alternative packaging formats, performance specifications, or supply chain availability while maintaining functional compatibility within the 14-TSSOP package footprint and rail-to-rail output architecture.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | MCP6494T-E/ST | — |
| Manufacturer | Microchip Technology | — |
| 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 | 6 | V/µs |
| Gain Bandwidth Product | 7.5 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 1.5 | mV |
| Current - Supply (x4 Channels) | 530 | µA |
| Current - Output / Channel | 15 | mA |
| Voltage - Supply Span (Min) | 2.4 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Product Status | Active | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the MCP6494T-E/ST are selected based on strict compatibility criteria within the 14-TSSOP package format and rail-to-rail output architecture. The primary substitution parameters are:
Mandatory Compatibility Criteria:
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Output Type: Rail-to-Rail
- Number of Circuits: 4
- Mounting Type: Surface Mount
- Operating Temperature Range: -40°C to 125°C
- Voltage Supply Span: Minimum 2.4 V to 5.5 V overlap
- Product Status: Active
- RoHS Compliance: ROHS3 Compliant
Performance Parameters Evaluated:
- Slew Rate (6 V/µs reference)
- Gain Bandwidth Product (7.5 MHz reference)
- Input Bias Current (1 pA reference)
- Input Offset Voltage (1.5 mV reference)
- Supply Current (530 µA reference)
- Output Current per Channel (15 mA reference)
Substitute parts are grouped by amplifier technology (General Purpose vs. CMOS) and packaging format (Tube vs. Cut Tape & Digi-Reel). All identified substitutes maintain the 14-TSSOP package footprint and rail-to-rail output specification, ensuring direct pin-compatible replacement capability.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Packaging | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| MCP6494T-E/ST | Microchip Technology | General Purpose | 6 | 7.5 | 1 | 1.5 | 530 | 15 | Tape & Reel (TR) | 3,820 |
| AD8544ARUZ | Analog Devices Inc. | General Purpose | 0.92 | 1 | 4 | 1 | 45 | 30 | Tube | 12,600 |
| AD8544ARUZ-REEL | Analog Devices Inc. | General Purpose | 0.92 | 1 | 4 | 1 | 45 | 30 | Cut Tape & Digi-Reel® | 5,200 |
| AD8604ARUZ | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 0.08 | 750 | 50 | Tube | 12,700 |
| AD8604ARUZ-REEL | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 0.08 | 750 | 50 | Cut Tape & Digi-Reel® | 2,451 |
| AD8604DRUZ | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 1.3 | 750 | 50 | Tube | 86,280 |
| AD8604DRUZ-REEL | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 1.3 | 750 | 50 | Cut Tape & Digi-Reel® | 2,340 |
| AD8608ARUZ | Analog Devices Inc. | CMOS | 5 | 10 | 1 | 0.08 | 1,000 | 80 | Tube | 23,346 |
| AD8608ARUZ-REEL | Analog Devices Inc. | CMOS | 5 | 10 | 1 | 0.08 | 1,000 | 80 | Cut Tape & Digi-Reel® | 4,800 |
| AD8618ARUZ | Analog Devices Inc. | CMOS | 12 | 24 | 0.2 | 0.023 | 1,700 | 150 | Tube | 1,692 |
| AD8618ARUZ-REEL | Analog Devices Inc. | CMOS | 12 | 24 | 0.2 | 0.023 | 1,700 | 150 | Cut Tape & Digi-Reel® | 7,099 |
Engineering Selection Recommendations
All identified substitute parts maintain active product status and ROHS3 compliance, meeting regulatory and supply chain requirements equivalent to the MCP6494T-E/ST. Selection between substitute options depends on application-specific performance requirements and packaging format availability.
General Purpose Amplifier Category (AD8544 Series): The AD8544ARUZ and AD8544ARUZ-REEL maintain general-purpose amplifier classification identical to the MCP6494T-E/ST. These parts operate within the required supply voltage range (2.7 V to 5.5 V) and temperature specification (-40°C to 125°C). The AD8544 series exhibits lower slew rate (0.92 V/µs) and reduced gain bandwidth product (1 MHz) compared to the MCP6494T-E/ST, resulting in significantly reduced supply current consumption (45 µA vs. 530 µA). These characteristics suit applications prioritizing power efficiency over high-frequency performance. Output current capability is doubled (30 mA vs. 15 mA per channel).
CMOS Amplifier Category (AD8604, AD8608, AD8618 Series): The AD8604, AD8608, and AD8618 series represent CMOS technology alternatives with enhanced performance specifications. All three families maintain the 14-TSSOP package footprint and rail-to-rail output architecture.
The AD8604 series (ARUZ and ARUZ-REEL variants) provides slew rate matching the MCP6494T-E/ST (6 V/µs) with marginally higher gain bandwidth product (8.4 MHz vs. 7.5 MHz). Input bias current is substantially reduced (0.2 pA vs. 1 pA), and input offset voltage is minimized (80 µV vs. 1.5 mV). Supply current increases to 750 µA, and output current per channel reaches 50 mA. The AD8604DRUZ variant exhibits identical performance with input offset voltage specification of 1.3 mV, maintaining compatibility with the MCP6494T-E/ST offset specification range.
The AD8608 series (ARUZ and ARUZ-REEL variants) delivers slew rate of 5 V/µs with elevated gain bandwidth product (10 MHz). Input bias current matches the MCP6494T-E/ST (1 pA), and input offset voltage is minimized (80 µV). Supply current is 1 mA, and output current per channel reaches 80 mA. Supply voltage minimum specification is 2.7 V, maintaining overlap with the MCP6494T-E/ST range.
The AD8618 series (ARUZ and ARUZ-REEL variants) represents the highest-performance option with slew rate of 12 V/µs and gain bandwidth product of 24 MHz. Input bias current is 0.2 pA, and input offset voltage is minimized (23 µV). Supply current is 1.7 mA, and output current per channel reaches 150 mA. Supply voltage maximum specification is 5 V, providing 0.5 V reduction compared to the MCP6494T-E/ST. Operating temperature range remains -40°C to 125°C.
Packaging Format Considerations: Tube packaging (standard variants) and Cut Tape & Digi-Reel® packaging (REEL variants) are functionally equivalent. Selection depends on procurement and assembly workflow requirements. Inventory availability varies across packaging formats and part numbers.
Frequently Asked Questions (FAQ)
Q: Can AD8544ARUZ directly replace MCP6494T-E/ST in all applications?
A: The AD8544ARUZ maintains pin-compatible 14-TSSOP packaging and rail-to-rail output specification. However, performance characteristics differ significantly. The AD8544 exhibits lower slew rate (0.92 V/µs vs. 6 V/µs) and reduced gain bandwidth product (1 MHz vs. 7.5 MHz). Applications requiring high-frequency response or fast transient performance may not tolerate these reductions. Supply current consumption is substantially lower (45 µA vs. 530 µA), benefiting power-constrained designs. Output current capability is doubled (30 mA vs. 15 mA per channel). Functional compatibility requires verification against specific application performance requirements.
Q: What is the primary difference between AD8604 and AD8608 series?
A: Both series employ CMOS technology in 14-TSSOP packaging with rail-to-rail output. The AD8608 provides higher gain bandwidth product (10 MHz vs. 8.4 MHz) and increased output current per channel (80 mA vs. 50 mA). Supply current consumption is higher in the AD8608 (1 mA vs. 750 µA). Input offset voltage is identical (80 µV). Selection depends on application requirements for bandwidth and output drive capability.
Q: Are Tube and Cut Tape & Digi-Reel® packaging variants electrically identical?
A: Yes. Tube packaging and Cut Tape & Digi-Reel® packaging variants of the same part number (e.g., AD8604ARUZ vs. AD8604ARUZ-REEL) contain identical die and electrical specifications. Packaging format differences address procurement and assembly process requirements only. Selection depends on manufacturing workflow compatibility and inventory availability.
Q: What supply voltage range is common across all substitute parts?
A: The MCP6494T-E/ST operates from 2.4 V to 5.5 V. All identified substitute parts operate from minimum 2.7 V to maximum 5.5 V, providing 0.3 V reduction in minimum supply voltage. Applications operating at 2.4 V to 2.6 V require verification of substitute part compatibility. The AD8618 series maximum supply voltage is 5 V, providing 0.5 V reduction compared to the MCP6494T-E/ST.
Q: Which substitute part offers lowest power consumption?
A: The AD8544ARUZ and AD8544ARUZ-REEL deliver the lowest supply current consumption at 45 µA (x4 channels), compared to 530 µA for the MCP6494T-E/ST. This represents an 88% reduction in supply current. Trade-offs include reduced slew rate (0.92 V/µs vs. 6 V/µs) and lower gain bandwidth product (1 MHz vs. 7.5 MHz).
Q: Which substitute part offers highest performance specifications?
A: The AD8618ARUZ and AD8618ARUZ-REEL deliver the highest performance with slew rate of 12 V/µs, gain bandwidth product of 24 MHz, and output current per channel of 150 mA. Input offset voltage is minimized at 23 µV. Trade-offs include increased supply current (1.7 mA vs. 530 µA) and reduced maximum supply voltage (5 V vs. 5.5 V).
Q: Is the MCP6494T-E/ST packaging format (Tape & Reel) available in substitute parts?
A: The identified substitute parts are available in Tube packaging or Cut Tape & Digi-Reel® packaging formats. Standard Tape & Reel (TR) packaging equivalent to the MCP6494T-E/ST is not listed among the provided substitute options. Packaging format selection depends on procurement requirements and assembly process compatibility.
Q: What is the input offset voltage specification range across all parts?
A: Input offset voltage ranges from 23 µV (AD8618 series) to 1.5 mV (MCP6494T-E/ST). The AD8544 series specifies 1 mV. The AD8604ARUZ and AD8608ARUZ series specify 80 µV. The AD8604DRUZ series specifies 1.3 mV. Applications requiring precision analog signal conditioning should evaluate offset voltage specifications against accuracy requirements.
Q: Are all substitute parts compliant with RoHS and REACH regulations?
A: Yes. All identified substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the MCP6494T-E/ST. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.
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