25QHTF21-136.8576-PD

Oscillators Overview

The 25QHTF21-136.8576-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 136.8576 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 2.5V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features a standby mode to reduce power consumption during idle periods
• Utilizes a leadless SMD package for automated surface-mount assembly

Oscillators Applications

• Digital signal processing systems requiring high-frequency clock sources
• Communication equipment utilizing LVCMOS interfaces
• Embedded systems with space-constrained surface-mount layouts

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 2.5V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet to prevent assembly errors.

Oscillators Selection Notes

Select this component when a fixed frequency of 136.8576 MHz is required with LVCMOS signaling. Consider the 2.5V operating voltage and standby capability for power-sensitive designs. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the available board space and surrounding components.

Oscillators Part Context

This part belongs to the 25QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a compact form factor. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from continuous-operation variants within the same product line.

Oscillators Replacement Considerations

Direct substitutes must match the 136.8576 MHz frequency, LVCMOS output, 2.5V supply, and 4-SMD No Lead package. Verify pinout compatibility and electrical specifications such as jitter and phase noise if critical. Cross-reference with other manufacturers offering identical form factors and timing characteristics.