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MCP47CMB24T-20E/ST Equivalent & Substitute Parts
Part Overview
The MCP47CMB24T-20E/ST is a 12-bit Digital to Analog Converter (DAC) manufactured by Microchip Technology, classified within the Data Acquisition component category. This integrated circuit provides four independent voltage-buffered DAC channels with I2C interface capability, operating across a supply voltage range of 1.8V to 5.5V for both analog and digital domains. The device is currently in Active product status and is supplied in Cut Tape (CT) packaging format. Substitute parts are identified when equivalent electrical and mechanical parameters are required but alternative packaging configurations or inventory availability necessitate component selection from the qualified substitute list.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Number of D/A Converters | 4 |
| Settling Time (Typical) | 16µs |
| Output Type | Voltage - Buffered |
| Data Interface | I2C |
| Reference Type | External, Internal, Supply |
| Voltage - Supply, Analog | 1.8V ~ 5.5V |
| Voltage - Supply, Digital | 1.8V ~ 5.5V |
| INL/DNL (LSB) | ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution of the MCP47CMB24T-20E/ST is determined by strict equivalence across all critical electrical and mechanical parameters. The primary substitute identified is the MCP47CVB24T-20E/ST, which maintains identical specifications across the following key parameters:
- 12-bit resolution with 4 independent DAC channels
- 16µs typical settling time
- Voltage-buffered output configuration
- I2C serial data interface
- External, Internal, and Supply reference type support
- 1.8V to 5.5V dual supply voltage range
- ±1 LSB maximum INL/DNL specification
- R-2R ladder architecture
- -40°C to 125°C operating temperature range
- 20-TSSOP surface mount package with identical physical dimensions
- ROHS3 compliance and REACH Unaffected status
The sole distinction between the main part and its substitute lies in the packaging format: the MCP47CMB24T-20E/ST is supplied in Cut Tape (CT) configuration, while the MCP47CVB24T-20E/ST is supplied in Tape & Reel (TR) configuration. Both formats contain identical die and electrical performance characteristics.
Parameter Comparison
| Parameter | MCP47CMB24T-20E/ST | MCP47CVB24T-20E/ST | Match Status |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Identical |
| Category | Data Acquisition | Data Acquisition | Identical |
| Number of Bits | 12 | 12 | Identical |
| Number of D/A Converters | 4 | 4 | Identical |
| Settling Time (Typical) | 16µs | 16µs | Identical |
| Output Type | Voltage - Buffered | Voltage - Buffered | Identical |
| Differential Output | No | No | Identical |
| Data Interface | I2C | I2C | Identical |
| Reference Type | External, Internal, Supply | External, Internal, Supply | Identical |
| Voltage - Supply, Analog | 1.8V ~ 5.5V | 1.8V ~ 5.5V | Identical |
| Voltage - Supply, Digital | 1.8V ~ 5.5V | 1.8V ~ 5.5V | Identical |
| INL/DNL (LSB) | ±1 (Max) | ±1 (Max) | Identical |
| Architecture | R-2R | R-2R | Identical |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | Identical |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) | Identical |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
| Packaging Format | Cut Tape (CT) | Tape & Reel (TR) | Different |
| Product Status | Active | Active | Identical |
Engineering Selection Recommendations
Both the MCP47CMB24T-20E/ST and MCP47CVB24T-20E/ST are Active status products from Microchip Technology and maintain full compliance with ROHS3 and REACH regulatory requirements. Selection between these parts is based on packaging and supply chain requirements rather than electrical performance differentiation.
The MCP47CMB24T-20E/ST in Cut Tape format is appropriate for applications requiring smaller order quantities or manual component handling workflows. The MCP47CVB24T-20E/ST in Tape & Reel format is suitable for high-volume automated assembly operations where reel-based component feeding systems are employed.
Both parts are qualified for identical circuit implementations and provide equivalent electrical performance across all specified parameters. The choice between them does not affect circuit design, PCB layout, or firmware development, as the die and pinout are identical.
Frequently Asked Questions (FAQ)
Q: Can the MCP47CVB24T-20E/ST be used as a direct replacement for the MCP47CMB24T-20E/ST in production?
A: Yes. Both parts contain identical silicon, pinout, and electrical specifications. The only difference is packaging format (Cut Tape versus Tape & Reel). Direct substitution is electrically and mechanically valid.
Q: Are there any differences in moisture sensitivity or handling requirements between these parts?
A: No. Both parts carry identical Moisture Sensitivity Level (MSL) rating of 3 (168 Hours). Storage and handling procedures are identical.
Q: Does the packaging format affect PCB assembly or soldering processes?
A: No. Both parts use the same 20-TSSOP surface mount package with identical physical dimensions (0.173" width, 4.40mm). PCB footprints, reflow profiles, and assembly procedures are identical.
Q: Are both parts suitable for the full -40°C to 125°C operating temperature range?
A: Yes. Both the MCP47CMB24T-20E/ST and MCP47CVB24T-20E/ST are rated for identical operating temperature ranges and maintain specified performance across this entire range.
Q: What is the primary reason to select one part over the other?
A: Selection is driven by supply chain and manufacturing workflow requirements. Cut Tape format suits lower-volume or manual assembly scenarios. Tape & Reel format is optimized for high-volume automated pick-and-place assembly lines.
Q: Do both parts support the same I2C interface and reference configurations?
A: Yes. Both parts provide identical I2C serial interface capability and support External, Internal, and Supply reference type configurations.
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