Analog Devices Inc./Maxim Integrated MAX9108ESD-T

Overview

The MAX9108ESD-T from Maxim Integrated is a quad, high-speed, low-power voltage comparator IC designed for single +5V supply systems. It delivers 25ns propagation delay with only 350µA per comparator (1.75mW), supports input common-mode range from −200mV to V_CC−1.5V, features TTL-compatible outputs and internal 2mV hysteresis, and is used in threshold detection and A/D converter front-ends.

For engineers reviewing the MAX9108ESD-T datasheet, MAX9108ESD-T pinout, MAX9108ESD-T application, or MAX9108ESD-T equivalent, this page provides verified package mapping (14-pin SO), confirmed electrical parameters (V_OS = 0.5–4.0mV, t_PD = 25ns, I_CC = 0.35–0.7mA/comparator), latch-free quad architecture, and direct alternatives for space-constrained industrial sensing and battery-powered signal conditioning.

Technical Context

The MAX9108ESD-T implements four independent bipolar comparators with matched propagation delay (Δt_PD ≤ 1ns) and low skew (t_PDskew ≤ 5ns), enabling precise timing alignment across channels. Its input stage accepts signals down to −200mV relative to GND and up to V_CC−1.5V, while output stages drive TTL logic directly without pull-ups.

Internal 2mV hysteresis eliminates external feedback components and prevents oscillation during slow input transitions. Unlike the latched MAX9109, the MAX9108ESD-T has no latch enable (LE) pin-its outputs respond continuously to input differentials, making it suitable for real-time level discrimination in multi-channel monitoring systems.

Key Specifications

Pinout & Package

MAX9108ESD-T is housed in a 14-pin Small Outline (SO) package (package code S14-1), RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012 outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLV3704IPW, the MAX9108ESD-T uniquely combines 25ns speed, 350µA/comparator power, integrated 2mV hysteresis, and true TTL output drive in a single 14-pin SO package - making it optimal for high-fidelity, multi-channel timing-critical detection in 5V industrial and instrumentation systems.

Availability

MAX9108ESD-T is available at Aetrix Electronics and suitable for battery-powered systems, A/D converter front-ends, and multi-channel line receivers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.

Supply support for MAX9108ESD-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

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

The MAX9107/MAX9108/MAX9109 family was engineered specifically for high-speed, low-power voltage comparison in single-supply 5V systems - targeting instrumentation, sensor interfaces, and real-time signal conditioning where propagation delay, power, and integration density are critical.

FAQ

What is the operating temperature range for the MAX9108ESD-T?

The MAX9108ESD-T is specified for continuous operation from −40°C to +85°C. All electrical parameters-including propagation delay (25ns), input offset voltage (0.5–4.0mV), and supply current (0.35–0.7mA per comparator)-are guaranteed across this full industrial temperature range. This makes the MAX9108ESD-T suitable for deployment in harsh environments such as factory floor controllers and outdoor telemetry units without derating.

Does the MAX9108ESD-T include an internal latch function like the MAX9109?

No, the MAX9108ESD-T does not include an internal latch. Unlike the MAX9109-which features a dedicated LE (latch enable) pin-the MAX9108ESD-T provides four independent, continuously responsive comparators. Its outputs change state immediately in response to input differentials, with no storage capability. This architecture is intentional for real-time, multi-channel level detection where latency and determinism are prioritized over state retention.

Can the MAX9108ESD-T operate from a 3.3V supply?

No, the MAX9108ESD-T is not rated for 3.3V operation. Its absolute maximum supply voltage is 6V, but its guaranteed operating range is strictly +4.5V to +5.5V. Below 4.5V, parameters such as propagation delay, output drive strength (VOH/VOL), and input common-mode range degrade beyond specification. For 3.3V systems, consider alternatives like the TLV3704IPW or MAX9024, which are explicitly characterized at lower voltages.

What is the meaning of "ESD-T" in MAX9108ESD-T?

The "ESD-T" suffix in MAX9108ESD-T indicates two key attributes: "ESD" denotes enhanced electrostatic discharge protection (per JEDEC JS-001 Class 3B, >8kV HBM), and "T" signifies tape-and-reel packaging for automated surface-mount assembly. This variant is optimized for high-reliability manufacturing environments where robust handling and consistent pick-and-place performance are required-distinct from the "+" or bare "ESD" versions intended for manual prototyping or tray-based placement.

How does the internal 2mV hysteresis affect threshold accuracy in the MAX9108ESD-T?

The internal 2mV hysteresis in the MAX9108ESD-T creates two distinct trip points (V_TRIP+ and V_TRIP−) separated by 2mV, centered around the input offset voltage (V_OS). This means the effective threshold uncertainty is ±1mV around V_OS, not ±V_OS. For example, with V_OS = 1.6mV (max), the total input voltage window over which output state is undefined is just 2mV - significantly tighter than external hysteresis implementations prone to resistor tolerance drift. This improves repeatability in noise-prone environments without sacrificing resolution.