18QHTF21-38.855-PD

Oscillators Overview

The 18QHTF21-38.855-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, designed for precise clock signal generation in electronic circuits. It operates at a fixed frequency of 38.855 MHz and utilizes LVCMOS output logic levels, ensuring compatibility with standard digital interfaces. The device functions on a single 1.8V supply voltage and incorporates a standby mode to reduce power consumption when not in active use. Packaged in a compact 4-SMD, No Lead form factor, this component supports surface-mount assembly processes. It is engineered for reliable performance within specified operating temperature ranges, making it suitable for applications requiring stable timing references.

Oscillators Feature Summary

• Features LVCMOS output logic for direct interface with digital systems
• Includes standby capability to minimize power usage during idle periods
• Utilizes low-power design principles for extended operational longevity

Oscillators Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing reference sources for communication interfaces
• System clock inputs for digital logic circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package dimensions fit within your PCB layout constraints. Check for any specific environmental ratings required for your application environment. Validate that the manufacturer's datasheet parameters meet your project's reliability standards.

Oscillators Selection Notes

Select this component when a stable 38.855 MHz clock source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage if your system architecture relies on low-voltage power domains. Evaluate the need for standby functionality to manage power budgets effectively. Assess the physical space available on the PCB to accommodate the small SMD footprint. Compare alternative frequencies if the exact 38.855 MHz value does not match your system clock needs.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within a standardized package. The series is characterized by its low-profile SMD construction and LVCMOS outputs. Similar models in the lineup include variants like 18QHTF21-68.085-PD and 18QHTF21-51.200-PD, differing primarily in their operating frequencies while maintaining consistent electrical characteristics and packaging.

Oscillators Replacement Considerations

Direct substitutes must match the 38.855 MHz frequency, LVCMOS output type, and 1.8V supply voltage. Verify pinout compatibility and package dimensions for seamless PCB integration. Ensure equivalent frequency stability and phase noise specifications are met by potential replacement parts.