18QHTF21-28.640-PD

Oscillators Overview

The 18QHTF21-28.640-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 28.64 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, designed for surface-mount applications.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down standby functionality
• Utilizes LVCMOS output interface

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the datasheet specifications to maintain oscillation accuracy. Confirm that the PCB layout supports the 2.0x1.6mm SMD footprint and no-lead package soldering profile to ensure reliable assembly and long-term performance.

Oscillators Selection Notes

Select this component when a precise 28.64 MHz reference is required in space-constrained designs. The choice is driven by the need for low voltage compatibility and integrated power management via the standby pin. Consider the small form factor as a primary advantage for high-density board layouts where larger packages are not feasible.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series is characterized by its small physical dimensions and standardized LVCMOS outputs. It represents a common solution for timing applications in consumer electronics and industrial control systems where size and power efficiency are critical constraints.

Oscillators Replacement Considerations

Direct replacements must match the 28.64 MHz frequency, 1.8V supply, and 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as current consumption and output swing. Cross-reference with other manufacturers offering similar small-footage XO components if Mercury stock is unavailable.