Analog Devices Inc./Maxim Integrated MAX7375AXR105+T

Overview

MAX7375AXR105+T from Maxim Integrated is a factory-trimmed 1.00MHz silicon oscillator in SC70-3 package, delivering rail-to-rail 50% duty cycle square-wave output with ±2% initial accuracy and ±50ppm/°C temp drift. It operates from 2.7V to 5.5V, draws 0.55–1.1mA supply current, and starts up in 5µs - designed as a drop-in replacement for ceramic resonators and crystals in microcontroller clocking for white goods and industrial controls.

For engineers reviewing the MAX7375AXR105+T datasheet, MAX7375AXR105+T pinout, MAX7375AXR105+T application, or MAX7375AXR105+T equivalent, key selection criteria include its vibration-immune oscillator architecture, 160psP-P jitter at 8MHz (scaled), push-pull CMOS output driving capability, and guaranteed -40°C to +125°C operation without external components.

Technical Context

The MAX7375AXR105+T uses a fully integrated BiCMOS oscillator core generating frequency directly-no PLL, no crystal load capacitors, no biasing network. Its push-pull CLOCK output drives 1kΩ to GND or 500Ω to V+, maintaining stable logic levels across full voltage and temperature range.

Startup occurs within 5µs after V+ exceeds ~1.65V; output remains glitch-free during power-on/off transitions. Jitter is measured peak-to-peak over 20s with 500MHz scope, and scales inversely with frequency-so 1MHz operation yields lower absolute jitter than higher-frequency variants.

Key Specifications

Pinout & Package

Package: SC70-3 (3-pin surface-mount, 1.25mm × 0.85mm × 0.55mm body, 0.65mm pitch). Pin 1 = V+, Pin 2 = CLOCK, Pin 3 = GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar silicon oscillator applications.

Compared with SiT1533AI-H4-33E-1.000000G and ABM3B-1.000MHZ-D2Y-T, the MAX7375AXR105+T offers superior 2.7–5.5V flexibility, integrated push-pull drive eliminating external circuitry, and proven vibration/EMI resilience - making it optimal for cost-sensitive, ruggedized embedded timing.

Availability

MAX7375AXR105+T is available at Aetrix Electronics and suitable for white goods control systems, industrial microcontroller clocking, and smart appliance user interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MAX7375AXR105+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, mixed-signal, and timing solutions for demanding industrial, automotive, and computing applications.

The MAX7375AXR105+T belongs to Maxim's silicon oscillator product line, engineered to replace quartz and ceramic timing elements with monolithic, robust, and easy-to-integrate alternatives for microcontroller and UART clocking.

FAQ

What is the operating voltage range for the MAX7375AXR105+T?

The MAX7375AXR105+T operates from 2.7V to 5.5V DC, supporting 3V, 3.3V, and 5V systems without level-shifting. This wide supply range allows direct integration into mixed-voltage designs and ensures compatibility with legacy and modern microcontrollers alike. The MAX7375AXR105+T maintains specified accuracy and jitter performance across the full range.

Does the MAX7375AXR105+T require external load capacitors or biasing components?

No - the MAX7375AXR105+T is a fully integrated oscillator with no external components required. Unlike ceramic resonators or crystals, it contains all necessary circuitry on-die, including the oscillator core and push-pull output stage. This eliminates load capacitors, feedback resistors, and startup networks, simplifying layout and improving reliability in the MAX7375AXR105+T design.

What is the startup time of the MAX7375AXR105+T, and how does it affect system initialization?

The MAX7375AXR105+T achieves stable output within 5µs after V+ rises above ~1.65V. This fast startup enables immediate microcontroller execution without extended reset hold times. For robust boot sequencing, pair the MAX7375AXR105+T with a voltage supervisor that asserts reset until ≥5µs after V+ exceeds 2.7V - ensuring clock stability before firmware begins execution.

How does the MAX7375AXR105+T compare to quartz crystal oscillators in vibration-prone environments?

The MAX7375AXR105+T uses solid-state BiCMOS technology with no mechanical resonator, making it inherently immune to shock, vibration, and acoustic noise that degrade quartz crystal performance. In white goods or industrial equipment, this eliminates timing failures due to motor-induced vibration - a documented weakness of crystal-based clocks not shared by the MAX7375AXR105+T.

Is the MAX7375AXR105+T pin-compatible with other variants in the MAX7375 family?

Yes - all MAX7375 variants, including MAX7375AXR105+T, MAX7375AXR185+T, and MAX7375AXR805+T, share identical SC70-3 packaging and pinout (V+, CLOCK, GND). Frequency is factory-trimmed; no PCB changes are needed when upgrading or substituting within the family, provided supply and load requirements remain compatible for the MAX7375AXR105+T and target variant.