Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | 7-bit volatile digital rheostat |
| Nominal resistance | 10 kΩ |
| Wiper positions | 128 |
| Interface | I²C-compatible |
| Operating supply | 1.8 V to 5.5 V |
| Configuration | Rheostat |
| Temperature range | -40°C to +125°C |
| Product status | Active exact orderable / family In Production |
Product Overview
The MCP4017T-103E/LTY is Microchip’s current 10 kΩ tape-and-reel ordering option for the MCP4017 volatile digital rheostat in SC70-6. It provides 128 programmable resistance positions over an I²C-compatible interface and is intended for calibration, trim and programmable resistance functions where the setting can be restored by the host after power-up.
This LTY orderable is particularly relevant when replacing the older MCP4017T-103E/LT code: the electrical design remains based on the MCP4017 -103 device, while procurement should use the currently recognized LTY ordering suffix rather than assuming the legacy reel code remains interchangeable in supply-chain systems.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Resolution | 7 bit / 128 taps |
| Nominal end-to-end resistance | 10 kΩ |
| Resistance tolerance | ±20% orderable-device listing |
| Operating voltage | 1.8 V to 5.5 V |
| Analog characteristics supply range | 2.7 V to 5.5 V |
| I²C fast-mode clock | Up to 400 kHz at 2.7 V to 5.5 V |
| Typical static current | 2.5 µA with interface inactive |
| Typical wiper resistance | Operating-point dependent; datasheet characterizes MCP4017 wiper resistance |
| Power-on behavior | Volatile wiper, mid-scale default |
| Operating temperature | -40°C to +125°C |
| Package | SC70-6 |
Design Considerations
The MCP4017 is a rheostat, not a three-terminal potentiometer. Its pinout and resistor-terminal access should therefore be checked against the circuit topology before substituting an MCP4018, MCP4019 or another digital-potentiometer family.
Because the wiper memory is volatile, firmware should write the required operating code after startup if the circuit depends on a calibrated value. The 10 kΩ end-to-end tolerance and wiper resistance should be included in absolute-resistance error calculations.
Related Engineering Resources
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Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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