Analog Devices Inc./Maxim Integrated MAX9203ESA-T

Overview

The MAX9203ESA-T from Maxim Integrated is a single high-speed voltage comparator with TTL-compatible output and latch input, designed for precision signal discrimination in time-critical analog-to-digital interfaces. It delivers 7ns typical propagation delay (at 5mV overdrive), 9mW power consumption at +5V supply, and supports dual-supply (±5V) or single +5V operation with input common-mode range extending to the negative rail.

For engineers reviewing the MAX9203ESA-T datasheet, MAX9203ESA-T pinout, MAX9203ESA-T application, or MAX9203ESA-T equivalent, this device is selected for high-speed sampling circuits, line receivers, V/F converters, and threshold detection where low latency, latch-controlled output hold, and rail-to-rail input capability are required.

Technical Context

The MAX9203ESA-T implements a bipolar comparator core optimized for speed and low power, with separate analog (VCC/VEE) and digital (VDD/GND) supply domains to minimize noise coupling. Its input stage accepts differential signals with common-mode range from VEE − 0.1V to VCC − 2.25V, enabling ground-sensing operation when VEE = GND.

It features a TTL-compatible latch input (Pin 5) that freezes the output state on falling edge, with guaranteed timing parameters including 10ns latch-disable-to-output delay, 2ns minimum setup time, and 1ns hold time. Output drive capability is specified for 1mA source and 8mA sink into TTL loads.

Key Specifications

Pinout & Package

MAX9203ESA-T is housed in an 8-pin narrow SO (Small Outline) package with gull-wing leads, 1.27mm pitch, and JEDEC MS-012AC footprint. Thermal performance supports continuous operation up to +85°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM311DR and TLV3501CDR, the MAX9203ESA-T uniquely combines 7ns speed, integrated TTL output with internal pull-up, and a dedicated latch input - enabling deterministic timing control in 5V mixed-signal systems without additional support components.

Availability

MAX9203ESA-T is available at Aetrix Electronics and suitable for high-speed A/D converters, line receivers, and PWM circuits requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for MAX9203ESA-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The MAX9203ESA-T belongs to Maxim's precision high-speed comparator product line, engineered specifically for time-critical signal conditioning in data acquisition, instrumentation, and digital control systems where speed, latch synchronization, and 5V TTL interoperability are essential.

FAQ

What is the maximum operating temperature range for the MAX9203ESA-T?

The MAX9203ESA-T is rated for continuous operation from −40°C to +85°C ambient temperature. This industrial-grade temperature range is fully specified in its electrical characteristics table and supported by production testing at both extremes. The device's thermal design - including SO package construction and internal bipolar process - ensures stable propagation delay, offset voltage, and latch timing across this full range. All key parameters such as tPD, VOS, and VOL are guaranteed over −40°C to +85°C in the official datasheet.

Does the MAX9203ESA-T require separate analog and digital ground connections?

No - the MAX9203ESA-T uses VEE as the analog ground reference and GND as the digital ground reference, but both may be connected to a common system ground plane when operating from a single +5V supply (VEE = GND). However, for optimal noise immunity in mixed-signal environments, Maxim recommends physically separating VEE and GND traces and connecting them at a single point near the device. The datasheet confirms that VEE serves as both negative analog supply and substrate connection, while GND references only the digital output and latch circuitry.

Can the MAX9203ESA-T operate from a single 3.3V supply?

No - the MAX9203ESA-T requires a +5V digital supply (VDD) and supports analog supplies from +5V to +10V (VCC) with VEE grounded, or ±5V split supplies. Its TTL output stage and internal logic are designed for 5V operation; VDD must be 4.75V to 5.25V per datasheet specifications. Attempting 3.3V on VDD will result in undefined output logic levels and failure to meet VOL/VOH specs. For 3.3V systems, consider alternatives like the TLV3501CDR, which is explicitly rated for 2.7–5.5V operation.

What is the purpose of the LATCH pin on the MAX9203ESA-T?

The LATCH pin (Pin 5) on the MAX9203ESA-T provides synchronous output capture: when driven low, it freezes the current comparator output state regardless of subsequent input changes; when returned high, the comparator resumes transparent operation. This function enables precise timing alignment in sampled-data systems - for example, capturing an analog threshold crossing at a specific clock edge. Datasheet timing specs confirm 10ns latch-disable-to-output delay, 2ns setup, and 1ns hold time, making the MAX9203ESA-T suitable for applications requiring deterministic output hold without external flip-flops.

How does the input common-mode range of the MAX9203ESA-T benefit single-supply designs?

The MAX9203ESA-T's input common-mode range extends to VEE − 0.1V, and with VEE tied to ground in single-supply mode, this allows inputs as low as −0.1V - effectively enabling true ground-referenced sensing. This eliminates the need for level-shifting circuitry when interfacing with sensors, DACs, or op-amps whose outputs swing to 0V. Combined with VCC up to +10V, the device supports wide dynamic range signal conditioning while maintaining full 7ns speed and TTL output compatibility - a key advantage over comparators with limited input ranges like the LM393, which cannot sense below ~1.5V with 5V supply.