18QHTF21-27.450-PD

Oscillators Overview

The 18QHTF21-27.450-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.45 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a 1.8V supply voltage. It features a standby or power-down function to reduce energy consumption when not in active use. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode for power reduction
• Operates on a 1.8V supply rail

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded microcontroller timing sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power architecture. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific manufacturing date codes or lot traceability needs required by your quality standards.

Oscillators Selection Notes

Select this component when a precise 27.45 MHz reference is needed with low power consumption capabilities. The LVCMOS output ensures direct interfacing with standard digital logic families without additional level shifting. Consider the 1.8V operating voltage if your system prioritizes energy efficiency over higher drive strength options.

Oscillators Part Context

This part belongs to the 18QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from continuously running variants in the same package family.

Oscillators Replacement Considerations

Direct substitutes include other 27.45 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and jitter before swapping. Cross-reference with similar Mercury models like the 25QHTF series if voltage differences are acceptable.