Analog Devices Inc./Maxim Integrated MAX913CSA+T

Overview

The MAX913CSA+T from Maxim Integrated is a single, ultra-fast, low-power precision TTL comparator with differential inputs and complementary TTL outputs. It delivers 10ns typical propagation delay, ±5V or +5V single-supply operation, input voltage range extending below the negative rail (–0.2V to +3.5V on +5V supply), 0.8mV offset voltage, and stable linear-region operation-enabling reliable zero-crossing detection in switching regulators.

For engineers reviewing the MAX913CSA+T datasheet, MAX913CSA+T pinout, MAX913CSA+T application, or MAX913CSA+T equivalent, key selection criteria include latch-enabled output hold capability, no minimum input slew-rate requirement, immunity to linear-region oscillation, and compatibility with legacy LT1016-based designs requiring wider common-mode range and lower power.

Technical Context

The MAX913CSA+T employs a fully differential bipolar input amplifier with laser-trimmed offset and no built-in hysteresis, enabling high-resolution comparison of slow-moving or low-amplitude signals without resolution loss. Its latch-enable (LE) pin provides transparent or latched output control, supporting synchronous sampling in high-speed triggers and pulse discriminators.

It operates from +5V single supply (V− = GND) or ±5V split supplies, with input common-mode range spanning –5.2V to +3.5V under dual supply and –0.2V to +3.5V under single supply. Output stage delivers TTL-compatible VOH ≥ 2.4V (IOUT = 10mA) and VOL ≤ 0.4V (ISINK = 10mA), ensuring direct interfacing with 74LS/74F logic families.

Key Specifications

Pinout & Package

MAX913CSA+T is housed in an 8-pin SO (Small Outline) package, 150-mil body width, with standard SOIC pin pitch (1.27mm) and JEDEC MS-012AC outline. Pin 1 is V+, pin 6 is GND, and all pins are surface-mount compatible with reflow soldering profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1016CN8#PBF and LM311DR, the MAX913CSA+T delivers superior speed, lower offset, inherent linear-region stability, and integrated latch functionality-making it optimal for modern high-resolution, high-speed timing and sensing systems where signal fidelity and deterministic behavior are essential.

Availability

MAX913CSA+T is available at Aetrix Electronics and suitable for switching regulators, zero-crossing detectors, and high-speed sampling circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX913CSA+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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX913CSA+T belongs to Maxim's precision high-speed comparator product line, designed specifically for applications demanding nanosecond response, rail-compatible inputs, and robust operation without hysteresis-targeting power conversion, data acquisition, and timing-critical instrumentation.

FAQ

What supply configurations does the MAX913CSA+T support?

The MAX913CSA+T operates from either a single +5V supply (with V− tied to GND) or a ±5V split supply. In single-supply mode, its input common-mode range extends from –0.2V to +3.5V, allowing direct interface with ground-referenced sources. The MAX913CSA+T draws 6mA per comparator at +5V, making it suitable for low-power systems where supply headroom is limited.

How does the latch enable (LE) pin function in the MAX913CSA+T?

The LE pin on the MAX913CSA+T controls output transparency: when LE is low, the Q and Q̄ outputs respond immediately to input differential voltage; when LE is high or floating, the outputs hold their last valid state. This enables synchronized sampling in high-speed triggers and eliminates metastability in digital control loops. The MAX913CSA+T specifies 2ns setup time and 5ns hold time for reliable latch timing.

Why is the MAX913CSA+T stable in the linear region while other comparators oscillate?

The MAX913CSA+T uses a unique bipolar input stage architecture with no internal hysteresis and optimized compensation that prevents oscillation during slow input transitions through the zero-crossing region. Unlike many high-speed comparators-including the LT1016-the MAX913CSA+T maintains monotonic output behavior without external hysteresis, preserving full input resolution and eliminating dead-band errors in precision measurement applications.

What are the absolute maximum ratings for the MAX913CSA+T?

The MAX913CSA+T has an absolute maximum positive supply voltage of +7V, negative supply voltage of –7V, and differential input voltage limit of +15V. Input voltage relative to V− must stay within –0.3V to +14V. Continuous output current is ±20mA. Exceeding these limits-even briefly-may cause permanent damage. For reliable operation, the MAX913CSA+T should be used within its specified operating ranges: 0°C to +70°C ambient, +4.5V to +5.5V V+, and –5V to 0V V− (or GND).

Can the MAX913CSA+T replace the LT1016 in existing designs?

The MAX913CSA+T is explicitly positioned as an improved plug-in replacement for the LT1016, offering wider input voltage range (–0.2V to +3.5V vs. LT1016's 0V to +3.5V), equivalent 10ns speed, and significantly lower 6mA supply current versus LT1016's ~12mA. However, the MAX913CSA+T pinout differs (SO-8 vs. DIP-8), so PCB layout changes are required. No circuit modifications beyond supply decoupling and LE handling are needed to leverage its linear-region stability and latch function.