18QHTF21-75.400-OE

Overview

The 18QHTF21-75.400-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.4 MHz and utilizes LVCMOS output logic levels. The device supports voltage control via an Enable/Disable pin, allowing for power management in applications requiring intermittent operation. It is designed to function with a supply voltage of 1.8V, making it suitable for low-power digital systems. The component is housed in a compact 4-SMD, No Lead package, which facilitates surface-mount assembly on printed circuit boards while maintaining a small footprint for space-constrained designs.

Feature Summary

• LVCMOS output interface for direct compatibility with digital logic circuits
• Enable/Disable pin functionality for active power control
• Compact 4-SMD no-lead surface mount package design

Applications

• Low-power portable electronic devices
• Digital signal processing systems
• Communication equipment requiring precise clocking

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your target platform's power rails. Confirm that the enable/disable control logic matches your microcontroller or FPGA GPIO capabilities. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly of the no-lead package.

Selection Notes

Select this oscillator when a stable 75.4 MHz clock source is required for LVCMOS-compatible components. The choice is driven by the need for low voltage operation at 1.8V and the integration of power management features through the enable pin. Consider the physical dimensions of the 4-SMD package to ensure it fits within the available board space constraints of your application design.

Part Context

This component belongs to the series of standard crystal oscillators produced by Mercury Electronics Ind. Co. Ltd. The company specializes in frequency control products, including quartz crystals and various types of oscillators. This specific model represents a solution for applications needing a fixed frequency output with minimal external components and integrated power control features.

Replacement Considerations

Direct replacements must match the 75.4 MHz frequency, LVCMOS output type, 1.8V operating voltage, and 4-SMD package outline. Verify pinout compatibility and electrical specifications such as phase noise and jitter if critical to the application.