Analog Devices Inc./Maxim Integrated MAX9034AUD

Overview

MAX9034AUD from Maxim Integrated is a quad comparator IC optimized for single-supply operation from +2.5V to +5.5V, delivering 188ns propagation delay, 35μA per comparator supply current, 4mV internal hysteresis, and rail-to-rail output swing across -40°C to +125°C. It serves as a precision threshold detector in portable battery-powered systems requiring low power and noise immunity.

For engineers reviewing the MAX9034AUD datasheet, MAX9034AUD pinout, MAX9034AUD application, or MAX9034AUD equivalent, key selection considerations include its 14-pin TSSOP package, guaranteed hysteresis, input common-mode range extending to VDD − 1.1V, absence of phase reversal under overdrive, and compatibility with photodiode preamp and digital line receiver topologies.

Technical Context

The MAX9034AUD integrates four independent comparators sharing a common VDD and VSS, each featuring built-in 4mV hysteresis to prevent oscillation on slow-moving inputs. Its input stage supports common-mode voltages from VSS to VDD − 1.1V, enabling direct interfacing with sensors operating near ground or rail.

Output stages are designed to minimize switching current transients, eliminating supply glitches during transitions. The device exhibits no phase reversal when inputs exceed common-mode limits, and maintains stable 188ns propagation delay (at 100mV overdrive) across full temperature and voltage ranges.

Key Specifications

Pinout & Package

The MAX9034AUD is housed in a 14-pin Thin Shrink Small Outline Package (TSSOP), RoHS-compliant and optimized for high-density PCB layouts with 0.65mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLV3704IPW, the MAX9034AUD uniquely balances ultra-low 35μA current, 188ns speed, and integrated 4mV hysteresis in a single 14-pin TSSOP - making it optimal for portable, noise-prone, and thermally demanding applications where both power and timing matter.

Availability

MAX9034AUD is available at Aetrix Electronics and suitable for battery-powered instrumentation, photodiode-based safety systems, and automotive keyless entry modules requiring stable component supply across extended temperature ranges.

Supply support for MAX9034AUD 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

Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, automotive, and communications markets.

The MAX9030–MAX9034 family delivers cost-optimized, ultra-small footprint comparators targeting portable and space-constrained applications demanding low power, wide supply range, and robust noise immunity.

FAQ

What is the maximum capacitive load the MAX9034AUD output can drive without oscillation?

The MAX9034AUD output is stable with up to 150pF capacitive load, as verified by production testing and documented in the Electrical Characteristics table. Exceeding this value may cause sustained oscillations or degraded propagation delay. For loads above 150pF, external buffering or series resistance should be used. This specification applies to all four outputs of the MAX9034AUD under standard test conditions (VDD = +5V, RL = 10kΩ).

Does the MAX9034AUD require external hysteresis for reliable operation in noisy environments?

No, the MAX9034AUD includes 4mV of built-in hysteresis, which provides sufficient noise margin for most industrial and portable applications without external components. This hysteresis is factory-trimmed and guaranteed across temperature and voltage. External hysteresis may be added using positive feedback if a larger threshold window is needed, but it is not required for basic noise immunity. All four comparators in the MAX9034AUD share this feature.

Can the MAX9034AUD operate from a 2.7V single supply in battery-powered designs?

Yes, the MAX9034AUD is fully specified from +2.5V to +5.5V single supply, including 2.7V operation. At 2.7V, it maintains 35μA typical supply current per comparator, 188ns propagation delay (with appropriate overdrive), and rail-to-rail output swing. Input common-mode range extends from VSS to VDD − 1.1V, meaning it supports inputs up to 1.6V at 2.7V supply - suitable for interfacing with low-voltage sensors and ADC references in the MAX9034AUD system.

What is the input offset voltage specification for the MAX9034AUD over temperature?

The MAX9034AUD has a guaranteed input offset voltage of ±5mV maximum over the full −40°C to +125°C operating range, with ±1mV typical at +25°C. Its offset voltage temperature coefficient is ±1µV/°C, resulting in minimal drift across temperature extremes. This specification applies uniformly to all four comparators in the MAX9034AUD and is validated per production test limits, ensuring consistent threshold accuracy in thermal cycling environments.

Is the MAX9034AUD pin-compatible with other devices in the MAX903x family?

No, the MAX9034AUD is not pin-compatible with MAX9030, MAX9031, or MAX9032 due to differing channel counts and pinouts. The MAX9034AUD uses a 14-pin TSSOP package with dedicated pins for all four comparator inputs and outputs, whereas MAX9032 (dual) uses 8-pin packages and MAX9031 (single) uses 5-pin SC70/SOT23. However, the electrical architecture - including supply range, hysteresis, and output behavior - is consistent across the MAX9030–MAX9034 family, enabling design reuse at the schematic level.