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Analog Devices MAX5400EKA+T — Analog & Data Acquisition
Analog Devices

MAX5400EKA+T 50k SPI Digital Potentiometer, 256-Tap

MPNMAX5400EKA+T
End of Life

Maxim Integrated MAX5400EKA+T, SOT-PoT™ series, digital potentiometer, 50kΩ resistance, 256 taps, SPI interface, linear taper, volatile memory, 2.7V–5.5V supply, -40°C to 85°C, SOT-23-8 package.

$3.05Ref. price · indicative, final on quote
MAX5400EKA+T datasheet
PackagingSOT-23-8
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX5400EKA+T Technical Specifications
ParameterValue
SeriesSOT-PoT™
Memory typeVolatile
Mounting typeSurface Mount
Voltage2.7V ~ 5.5V
InterfaceSPI
Operating temperature-40°C ~ 85°C
TaperLinear
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±25%
ConfigurationPotentiometer
Number of taps256
CaseSOT-23-8
Resistance50k
Number of circuits1
Temperature coefficient50ppm/°C
Resistance - wiper (Ohms)250

Product details

256-tap digital pot in a SOT-23-8 — what it is and where it fits

The Maxim Integrated MAX5400EKA+T is a single-channel, 50kΩ digital potentiometer with 256 wiper tap positions, controlled via an SPI interface. It belongs to the SOT-PoT™ family and comes in an 8-pin SOT-23 package — a footprint that fits tightly on sensor modules, handheld instruments, or any board where a mechanical trimmer needs replacement by a digitally set divider. The linear taper suits level-setting, gain adjustment, or bias calibration in analog signal chains.

Temperature range and drift

Rated for -40°C to 85°C. The typical temperature coefficient is 50 ppm/°C.

Sourcing — active, no LTB risk

The MAX5400EKA+T carries an active lifecycle status and is ROHS3 compliant. There is no last-time-buy notice or obsolescence risk on this line.

Frequently asked questions

Is MAX5400EKA+T a direct replacement for MAX5401EKA+T?

Yes, the two parts are pin-compatible and share the same 256-tap SPI interface, 50kΩ resistance, and SOT-23-8 package. The only difference is the power-on wiper position: MAX5400EKA+T defaults to mid-scale (tap 128), while MAX5401EKA+T defaults to zero-scale (tap 0). If your firmware initializes the wiper on boot, they are interchangeable.

Can I use MAX5400EKA+T in a 3.3V system?

Yes. The supply voltage range is 2.7V to 5.5V, so 3.3V operation is within spec. SPI logic levels track the supply rail, so no level translation is needed when the host controller also runs at 3.3V.

Is MAX5400EKA+T volatile or non-volatile?

Volatile. The wiper position is stored in registers that clear on power loss. On each power-up the wiper resets to mid-scale (tap 128). If a fixed startup state is required without firmware intervention, a non-volatile digital pot is the correct choice.

What is the taper of MAX5400EKA+T?

Linear taper. The resistance between the wiper and either end terminal changes linearly with the tap position.