Analog Devices Inc./Maxim Integrated MAX9100EUK+T

Overview

The MAX9100EUK+T from Analog Devices is a micropower, single-supply comparator with push-pull CMOS output, optimized for battery-powered systems operating from 1.0V to 5.5V supply. It delivers 5μA quiescent current, 4μs propagation delay, rail-to-rail output swing up to 5mA load, and operates across –40°C to +85°C - enabling use in ultra-low-voltage sensor monitoring and portable instrumentation.

For engineers reviewing the MAX9100EUK+T datasheet, MAX9100EUK+T pinout, MAX9100EUK+T application, or MAX9100EUK+T equivalent, key selection criteria include guaranteed 1.0V operation, input common-mode range extending to ground, no phase reversal under overdrive, low-temperature ICC stability, and SOT23-5 footprint compatibility with space-constrained PCB layouts.

Technical Context

The MAX9100EUK+T employs a BiCMOS input stage with rail-to-rail input capability (0V to VCC − 0.2V), delivering ±10mV max input offset voltage and ±5nA typical input bias current within spec. Its push-pull output stage uses large internal drivers to sustain rail-to-rail swing while sourcing/sinking up to 5mA - unlike open-drain alternatives requiring external pull-ups.

Propagation delay remains stable across supply voltage (3.3μs at 1.0V, 3.4μs at 5.0V) and temperature (–40°C to +85°C), with minimal supply-current variation during switching (<1μA increase at 100kHz toggle), reducing need for bulk bypass capacitance in compact battery-powered designs.

Key Specifications

Pinout & Package

MAX9100EUK+T is housed in a lead(Pb)-free, RoHS-compliant SOT23-5 package (U5-1), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads suitable for reflow soldering and high-density layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar comparator applications.

Compared with TLV3691IDBVR and MAX9060AXK+T, the MAX9100EUK+T uniquely combines guaranteed 1.0V operation, push-pull output, and sub-4μs delay - making it the only option for high-speed, self-driven threshold detection in sub-1.5V battery systems.

Availability

MAX9100EUK+T is available at Aetrix Electronics and suitable for battery-powered sensor monitoring, portable medical instrumentation, low-voltage logic-level translation, and single-cell power management requiring stable component supply across extended production lifecycles.

Supply support for MAX9100EUK+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX9100EUK+T belongs to Analog Devices' micropower comparator product line, engineered specifically for energy-constrained, ultra-low-voltage applications where supply voltage may dip to 1.0V and quiescent current must remain below 10μA.

FAQ

What is the minimum supply voltage guaranteed for reliable operation of the MAX9100EUK+T?

The MAX9100EUK+T is fully specified and production-tested down to 1.0V supply voltage across the full –40°C to +85°C temperature range. At 1.0V, it maintains 5μA typical quiescent current, 3.3μs propagation delay, and rail-to-rail input/output functionality - enabling direct use with single alkaline, zinc-air, or lithium coin cells without regulation. Performance parameters such as offset voltage and drive strength are characterized and bounded at this minimum voltage.

Does the MAX9100EUK+T exhibit output phase reversal when inputs exceed the common-mode range?

No, the MAX9100EUK+T does not exhibit output phase reversal under overdriven input conditions. Even when IN+ or IN− exceeds the specified common-mode range (0V to VCC − 0.2V), the output maintains correct polarity relative to the differential input sign. This behavior is confirmed in the device's detailed description and eliminates false triggering in noisy or transient-prone environments - a critical reliability feature for battery-powered safety-critical monitoring using the MAX9100EUK+T.

Can the MAX9100EUK+T drive a 5mA load while maintaining rail-to-rail output swing?

Yes, the MAX9100EUK+T push-pull output is rated to source and sink up to 5mA while sustaining rail-to-rail swing. At VCC = +5.0V, VOH remains within 180mV of VCC and VOL stays below 180mV above GND under 5mA load. At lower supplies (e.g., +1.2V), it sustains 0.5mA with VOH/VOL within 120mV of rails. This capability allows direct driving of logic inputs, LEDs, or small MOSFET gates without external buffers - a key advantage of the MAX9100EUK+T over open-drain comparators.

What is the input common-mode voltage range of the MAX9100EUK+T, and how does it behave near the supply rails?

The MAX9100EUK+T has a fully specified input common-mode range from 0V to (VCC − 0.2V). True rail-to-rail input operation (0V to VCC) is possible but incurs trade-offs: input bias current rises to ~800nA and supply current increases to ~7μA when VCM approaches VCC. Within the specified range, IB remains ±5nA typical and ICC stays at 5μA. This behavior is documented in the "Input Stage Circuitry" section and confirms the MAX9100EUK+T's suitability for ground-referenced sensors and low-side current sensing.

Is the MAX9100EUK+T RoHS-compliant and lead(Pb)-free?

Yes, the MAX9100EUK+T carries the "+" suffix per Analog Devices' ordering nomenclature, explicitly denoting a lead(Pb)-free and RoHS-compliant package. It uses a matte-tin finish on the SOT23-5 terminals and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. The device is qualified for reflow soldering per IPC/JEDEC J-STD-020, with peak temperature tolerance up to +300°C for 10 seconds - ensuring compatibility with standard surface-mount assembly processes for the MAX9100EUK+T.