MCP45HV51T-104E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip MCP45HV51T-104E/ST is a single-channel, 8-bit volatile digital potentiometer with a 100 kΩ end-to-end resistance, controlled via a 2-wire I2C-compatible serial interface. Housed in a TSSOP-14 package, it supports high-voltage operation and targets industrial, audio, and calibration applications requiring software-adjustable resistance.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP45HV51T-104E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3400(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 MCP45HV51T-104E/ST?
- Single-channel 8-bit digital potentiometer with 100 kΩ (104) end-to-end resistance
- High-voltage tolerant design allowing wide supply voltage operation beyond standard 5 V logic
- 2-wire I2C-compatible serial control interface for easy microcontroller integration
- Volatile wiper position storage for power-on reset to mid-scale position
- Available in compact TSSOP-14 package with Pb-free, RoHS-compliant construction
What is MCP45HV51T-104E/ST used for?
MCP45HV51T-104E/ST is used in industrial control systems for electronic gain and offset calibration, replacing manual trimmer potentiometers in production test fixtures and field-adjustable sensor signal conditioning circuits. It also appears in audio equipment for digitally controlled volume and tone adjustment, and in power-supply designs where output voltage must be trimmed over a 2-wire interface without mechanical access.
What are the specifications of MCP45HV51T-104E/ST?
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 13 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 0.024kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 256 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 18V |
| Resistor Terminal Voltage-Min | -18 V |
| Screening Level | AEC-Q100; TS 16949 |
| Supply Current-Max | 0.65mA |
| Supply Voltage-Nom | 3.5V |
| Surface Mount | YES |
| Temperature Coefficient-Nom | 100ppm/°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 | 100000Ω |
| 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 MCP45HV51T-104E/ST datasheet?
MCP45HV51T-104E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP45HV51T-104E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does the MCP45HV51T-104E/ST provide, and what resistance increment does each step represent?
The MCP45HV51T-104E/ST is an 8-bit digital potentiometer providing 256 wiper positions across its 100 kΩ end-to-end resistance. Each wiper step therefore represents approximately 392 Ω of resistance change, giving fine resolution for calibration and analog signal conditioning tasks.
Which serial interface does MCP45HV51T-104E/ST use, and how many wires are needed to control it from a microcontroller?
MCP45HV51T-104E/ST uses a 2-wire I2C-compatible serial interface, requiring only SDA and SCL lines in addition to power and ground. This minimal pin count simplifies PCB routing when multiple digital potentiometers share the same bus, since each device is addressed independently.
Is the wiper position retained after a power cycle on MCP45HV51T-104E/ST?
No. MCP45HV51T-104E/ST uses volatile wiper storage, so the position is lost when VCC is removed. On power-up, the wiper returns to the mid-scale position, which corresponds to approximately 50 kΩ for the 100 kΩ variant. Designs requiring non-volatile retention should consider the MCP44HV51 or similar NV-equipped devices.
What package does MCP45HV51T-104E/ST ship in and how does it compare to an SOIC footprint for dense board layouts?
MCP45HV51T-104E/ST is supplied in a TSSOP-14 package, which has a 0.65 mm pin pitch compared to the 1.27 mm pitch of a standard SOIC-14. The narrower TSSOP body occupies roughly 40% less board area, making it preferable when multiple digital potentiometers must fit within a tight PCB zone.
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