Maxim Integrated MAX5450EUB+ dual 10kΩ digital rheostat, 256 taps, linear taper, Up/Down (U/D, INC, CS) interface, 2.7V to 5.5V supply, -40°C to +85°C, 10-uMAX/uSOP package.
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting | Surface Mount |
| Supply voltage | 2.7V ~ 5.5V |
| Interface | Up/Down (U/D, INC, CS) |
| Operating temperature | -40°C ~ 85°C |
| Taper | Linear |
| Package | Tube |
| Configuration | Rheostat |
| Number of taps | 256 |
| Case | 10-TFSOP, 10-MSOP (0.118\", 3.00mm Width) |
| Resistance | 10k |
| Number of circuits | 2 |
| Temperature coefficient | 35ppm/°C |
| Resistance - wiper (Ohms) | 225 |
The MAX5450EUB+ is a dual-channel digital rheostat. Each circuit has 10kΩ end-to-end resistance with 256 wiper tap positions. Wiper resistance is typically 225Ω.
Housed in a 10-pin TFSOP/MSOP package (3.00mm width, 0.118" body), the MAX5450EUB+ uses the standard 10-uMAX/uSOP footprint. Surface-mount only — no through-hole variant.
The MAX5450EUB+ uses an Up/Down interface with three control lines: U/D (direction), INC (increment), and CS (chip select). It is a simple pulse-based protocol, not SPI or I²C.
Yes, the supply range of 2.7V to 5.5V covers 3.3V and 5V systems. The digital inputs are referenced to the supply rail, so at VDD = 3.3V the logic thresholds are compatible with 3.3V CMOS outputs.
The taper is Linear — resistance changes uniformly with the digital code. This suits applications like gain adjustment, offset trimming, and programmable filters where a linear response is needed.