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Analog Devices MAX9019EKA+T — Analog & Data Acquisition

MAX9019EKA+T General Purpose Comparator, Dual, SOT-23-8

MPNMAX9019EKA+T
End of Life

Maxim Integrated MAX9019EKA+T, Beyond-the-Rails™ series, General Purpose comparator, dual, SOT-23-8, 1.8V to 5.5V supply, 28µs propagation delay, 2µA quiescent current, CMOS push-pull rail-to-rail output, -40°C to 85°C.

$2.14Ref. price · indicative, final on quote
PackagingSOT-23-8
RoHSROHS3 Compliant
SeriesBeyond-the-Rails™
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX9019EKA+T specifications
ParameterValue
TypeGeneral Purpose
SeriesBeyond-the-Rails™
Output typeCMOS, Push-Pull, Rail-to-Rail
MountingSurface Mount
Voltage - input offset5mV @ 5V
Voltage - supply, single (Dual (±))1.8V ~ 5.5V
Output current50mA
Current - quiescent2µA
Current - input bias0.001µA @ 5V
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Hysteresis4mV
CaseSOT-23-8
CMRR, PSRR80dB PSRR
Number of elements2
Propagation delay28µs

Product details

28µs propagation delay — fast enough for most threshold loops

It is not a high-speed part for RF envelope detection or fast-switching regulators — that would call for a sub-100ns comparator — but for general-purpose threshold monitoring it is well within the timing budget.

2µA quiescent current — keeps the power budget lean

The quiescent current per comparator is 2µA maximum, which matters when the circuit is always-on — battery-backed alarm thresholds, remote sensor nodes, or energy-harvesting triggers. The low bias current of 0.001µA at 5V means the input impedance is high enough to work directly with high-resistance sensor bridges without loading the signal.

Built-in 4mV hysteresis — no external feedback network needed

The 4mV internal hysteresis eliminates the need for a positive-feedback resistor pair around the comparator to prevent output chatter when the input signal crosses the threshold slowly. That saves two resistors per channel and simplifies the layout — a practical advantage when board space is tight in the SOT-23-8 footprint.

Frequently asked questions

What is the propagation delay of MAX9019EKA+T?

The maximum propagation delay is 28µs. That covers overcurrent and undervoltage detection in power supplies and general threshold monitoring.

What is the quiescent current of MAX9019EKA+T?

The maximum quiescent current is 2µA per comparator. Combined with the 0.001µA input bias current at 5V, it is suited for always-on battery-powered threshold detectors.

Is MAX9019EKA+T compatible with 3.3V logic?

Yes. The 1.8V to 5.5V supply range covers 3.3V logic rails directly, and the rail-to-rail CMOS output swings to the supply rails, so it interfaces with 3.3V logic without level shifting.

Can MAX9019EKA+T be used as a window comparator?

Yes — the dual comparator in one package is a natural fit for a window comparator. One comparator sets the upper threshold, the other the lower threshold, and the push-pull outputs can be wire-ANDed (with external diodes) to flag when the input is inside or outside the window.