Analog Devices Inc./Maxim Integrated MAX964ESE+T

MAX964ESE+T Series Product Summary

The MAX964ESE+T from Analog Devices Inc./Maxim Integrated stands out as a high-speed, quad comparator IC targeting demanding, modern electronic systems. This device is part of the MAX961–MAX964 family, designed for both single-supply +3V and +5V environments. Packaged in a 16-pin SOIC, the MAX964ESE+T integrates four independent comparators and leverages proprietary "Beyond-the-Rails" input architecture, enabling operation with input voltages extending 100mV beyond either power-supply rail. Typical deployment scenarios include GPS receivers, battery-based portable systems, line receivers, threshold detectors, and high-speed sampling circuits.

Main Features and Technical Summary of MAX964ESE+T

The MAX964ESE+T offers significant advantages to designers seeking high performance and versatility. Key features include an ultra-fast 4.5ns propagation delay at 5mV input overdrive, internal 3.5mV hysteresis for noise-immune switching, and TTL/CMOS-compatible outputs capable of sinking or sourcing up to 4mA. Its direct interface capability with logic systems streamlines integration across various topologies. The inputs’ extended common-mode range and the absence of external hysteresis-resistor requirements further simplify circuit design. Additionally, a low operating supply current of 5mA per comparator (and just 270μA in shutdown mode) ensures energy efficiency in portable and battery-powered applications.

MAX964ESE+T Electrical Specifications

Operating over +2.7V to +5.5V supply ranges, MAX964ESE+T provides reliable performance from -40°C to +85°C, making it suitable for industrial and commercial environments. Absolute maximum supply voltage ratings are -0.3V to +6V, and inputs may swing up to 0.3V beyond supplies with robust protection from differential voltages. Each output transitions rapidly with the specified 4.5ns delay, and the outputs can drive logic levels close to rails (within 0.52V). The input protection scheme safely accommodates input overloads, with bias currents managed via built-in series resistors and diode clamps. Power dissipation is kept low per comparator, supporting higher density board layouts without thermal concerns.

Functional Block Overview Input/Output Structure of MAX964ESE+T

The comparator’s input circuitry features diode and resistor protection networks, allowing for secure operation even when subjected to differential voltages up to 2.1V. This architecture allows common-mode voltage excursions 100mV beyond each rail, minimizing risk for threshold applications in noisy, high-speed environments. Internal hysteresis ensures clean transitions between states, removing the need for external components to combat noise or parasitic feedback typically observed when input voltages approach equality.

The output stage is current-driven, with high transient current during switching for rapid output transitions and low steady-state current to maintain logic levels—delivering both speed and energy efficiency. Output slew rate is linearly affected by capacitive loading, so designers should factor load capacitance into timing considerations for optimal performance.

Power Management and Shutdown Functionality in MAX964ESE+T

MAX964ESE+T’s integrated shutdown functionality allows system-level power savings by reducing supply current to 270μA per comparator with the SHDN pin pulled high. During shutdown, outputs present high impedance, enabling effective isolation in shared-bus or multiplexed applications. To ensure deterministic wake-up performance, the LE pin should be managed to avoid indeterminate output states upon exit from shutdown.

MAX964ESE+T PCB Design and Application Recommendations

Given MAX964ESE+T’s high operating bandwidth and fast output transitions, careful circuit board layout is paramount. Recommended practices include employing low-inductance ground planes, placing 0.1μF ceramic bypass capacitors close to VCC pins, minimizing trace lengths for input/output lines, and avoiding sockets to prevent parasitic feedback. When dealing with slow input signals, adding a small capacitor (≤1000pF) between inputs mitigates unwanted oscillation during transitions without significant impact on propagation delay. A sample layout is available from the manufacturer to guide high-speed design tasks.

MAX964ESE+T Packaging and Physical Specs

MAX964ESE+T is supplied in a 16-pin SOIC, providing ample pin accessibility and thermal management capability. The package supports up to 696mW continuous power dissipation at 70°C ambient. Mechanical and RoHS-compliance drawings are maintained online by Analog Devices Inc./Maxim Integrated and should be referenced for accurate footprint planning and soldering profiles.

Alternative or Replacement Options for MAX964ESE+T

Engineers considering alternatives to MAX964ESE+T for quad comparator applications within the MAX961–MAX964 family may also evaluate the MAX961, MAX962, and MAX963. Each offers unique arrangements: MAX961 (single with latch and complementary outputs), MAX962 (dual), and MAX963 (quad with output latch), alongside the MAX997/MAX999 for ultra-small form factors and extended temperature performance, including SOT23 and μMAX packaging. These related series members share the core technical foundation, bandwidth, hysteresis, and logic compatibility characteristics, enabling seamless migration across system requirements. Selection should be guided by comparator channel count, output configuration, package style, and operating temperature range.

Conclusion

The MAX964ESE+T quad comparator embodies a robust solution for engineers targeting ultra-high-speed, low-power, beyond-the-rails voltage comparison in single-supply, high-density designs. Its combination of fast response, noise immunity, flexible input range, and advanced power management positions it as a leading choice for precision analog interface tasks in instrumentation, communication, and portable electronics. By considering system-level requirements, PCB layout, and package selection, engineers can fully leverage the capabilities of the MAX964ESE+T and its related models for optimal results across a range of high-performance applications.