MCP4542-503E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4542-503E/MS is a single-channel 50 kΩ non-volatile digital potentiometer with 128-step resolution in an 8-pin MSOP package, controlled via I2C increment/decrement interface. Wiper position is retained after power removal. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4542-503E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7070(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP4542-503E/MS?
- 50 kΩ single-channel digital potentiometer with 128-step resolution and non-volatile EEPROM wiper position memory surviving power cycles
- I2C increment/decrement interface enabling simple 2-wire control from any MCU without dedicated SPI hardware
- 8-pin MSOP package providing a smaller footprint than SOIC-8 alternatives for space-constrained analog trimming designs
What is MCP4542-503E/MS used for?
The MCP4542-503E/MS is designed for applications such as audio volume controls, programmable gain amplifiers, and sensor calibration trimmers where the wiper position must be preserved after power is removed. Its non-volatile EEPROM storage eliminates the initialization sequence required by volatile digital potentiometers, allowing the system to resume at its last programmed resistance on every power-up. The I2C interface supports up to 7 addressable devices on a single bus, enabling multi-channel resistance control with minimal MCU pin usage.
What are the specifications of MCP4542-503E/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.6mA |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 50000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP4542-503E/MS datasheet?
MCP4542-503E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4542-503E/MS?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does MCP4542-503E/MS retain wiper position after power-off compared to a volatile digital potentiometer?
The MCP4542-503E/MS stores the wiper position in internal non-volatile EEPROM with a minimum 1 million write cycle endurance, ensuring the 128-step 50 kΩ setting is restored on the next power-up without any MCU initialization command. A volatile alternative such as MCP4151 resets to mid-scale on every power cycle, requiring firmware to reprogram the wiper position from stored calibration values each time.
What I2C address options and bus speed does MCP4542-503E/MS support for multi-device designs?
The MCP4542-503E/MS supports standard I2C bus speeds of 100 kHz and 400 kHz, with the device address selectable via A0 and A1 hardware pins, allowing up to 4 MCP4542 devices on a single I2C bus. This enables 4 independent 50 kΩ resistance channels from 2 bus wires, ideal for multi-channel audio or sensor calibration boards with limited MCU I/O.
For a gain-setting application, what resistance resolution does MCP4542-503E/MS provide across its 50 kΩ range?
The MCP4542-503E/MS divides its 50 kΩ end-to-end resistance into 128 steps, giving approximately 390 Ω per step with a minimum wiper resistance of around 75 Ω. This resolution is adequate for setting op-amp feedback gain to within 0.8% of the target in precision signal conditioning circuits operating from 2.7V to 5.5V supply.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9760 | $0.98 |
| 100+ | $0.8100 | $81.00 |
| 1000+ | $0.7900 | $790.00 |
| 5000+ | $0.7140 | $3570.00 |
| 7500+ | $0.7120 | $5340.00 |
| 10000+ | $0.7070 | $7070.00 |
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