18QHTF21-25.700-PD

Oscillators Overview

The 18QHTF21-25.700-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 25.7 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby (power down) functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock generation
• Digital signal processing timing
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS signaling levels. The inclusion of a power-down feature makes it suitable for battery-operated devices where energy conservation is critical. Consider the small form factor for space-constrained layouts compared to larger through-hole alternatives.

Oscillators Part Context

This part belongs to the QHTF series of quartz crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant, while 'PD' denotes the power-down capability. This family is designed for consumer electronics and portable devices requiring reliable timing solutions.

Oscillators Replacement Considerations

Direct replacements must match the 25.7 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as current consumption and startup time. Cross-reference with other manufacturers offering similar SMD oscillators with identical form factors and electrical characteristics.