18QHTF21-38.900-PD

Oscillators Overview

The 18QHTF21-38.900-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 38.9 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to minimize energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, suitable for space-constrained printed circuit board layouts.

Oscillators Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Includes standby mode functionality to reduce power consumption
• Utilizes a compact surface-mount package design

Oscillators Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interface synchronization

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct voltage and output specifications. Confirm that the required operating temperature range aligns with the component's rated limits. Check for any specific handling instructions related to the surface-mount package type during assembly processes.

Oscillators Selection Notes

Select this component when a precise 38.9 MHz timing source is required for low-voltage digital circuits. Consider the 1.8V supply requirement and LVCMOS compatibility with the target system logic levels. Evaluate the physical footprint constraints against the 2.0x1.6mm package dimensions to ensure adequate PCB real estate availability.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor timing solutions. The series typically offers various frequency options within a standardized package profile, allowing designers to maintain consistent mechanical layouts across different product variants while adjusting electrical parameters as needed.

Oscillators Replacement Considerations

Direct replacements must match the 38.9 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics before substitution.