18QHTF21-29.973-PD

Oscillators Overview

The 18QHTF21-29.973-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 29.973 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is suitable for applications requiring precise timing signals in space-constrained electronic designs.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Includes standby and power-down functionality to minimize energy usage
• Delivers stable LVCMOS output signals for digital circuit interfacing
• Utilizes a small form-factor SMD package for surface-mount assembly

Oscillators Applications

• Portable consumer electronics requiring low power consumption
• Communication devices needing precise clock synchronization
• Embedded systems utilizing LVCMOS compatible interfaces
• Industrial control modules with space constraints

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply rail is stable and within the specified operating range to maintain signal integrity. Confirm that the PCB footprint matches the 4-SMD, No Lead package dimensions of 2.0x1.6mm. Check for any RoHS compliance documentation if required by your manufacturing standards. Always refer to the official datasheet for detailed electrical characteristics and thermal handling guidelines.

Oscillators Selection Notes

Select this oscillator when a 29.973 MHz reference is required for video or communication standards. Consider the 1.8V supply constraint and LVCMOS output compatibility with your microcontroller or FPGA. The compact 2.0x1.6mm size makes it ideal for dense PCB layouts. Evaluate the need for power-down capabilities if battery life or thermal management is critical. Compare jitter specifications if high-frequency stability is essential for your application.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, typically ranging from 1.8V to 3.3V. The 'PD' suffix indicates the inclusion of a power-down pin or feature. These components are widely used in modern electronics where size, power efficiency, and timing accuracy are prioritized over traditional through-hole solutions.

Oscillators Replacement Considerations

Direct replacements must match the 29.973 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, especially regarding the power-down control signal. Check equivalent jitter and phase noise specifications to ensure performance parity. Consult manufacturer cross-reference lists for validated substitutes.