18QHTF21-29.972-PD

Oscillators Overview

The 18QHTF21-29.972-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 29.972 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features a Standby function, allowing for power-down control to reduce energy consumption when the oscillator is not in active use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby mode capability for power management
• Utilizes a compact 4-SMD No Lead surface-mount package

Oscillators Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 29.972 MHz
• Low-power embedded devices utilizing 1.8V logic levels

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Confirm that the 1.8V supply voltage aligns with the power rails of the receiving circuitry. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper mechanical fit and solder joint integrity during assembly processes.

Oscillators Selection Notes

Select this component when a precise 29.972 MHz timing source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage constraint to ensure compatibility with low-voltage microcontrollers or FPGAs. The integrated standby feature makes it suitable for battery-operated or energy-efficient designs where power conservation during idle periods is a priority over continuous oscillation.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The suffix -PD indicates the inclusion of a power-down or standby pin functionality, distinguishing it from standard continuous-operation variants within the same physical package family.

Oscillators Replacement Considerations

Direct replacements must match the 29.972 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that substitute components also support the Standby function if power management is critical to the application design.