18QHTF21-29.4989-PD

Oscillators Overview

The 18QHTF21-29.4989-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 29.4989 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 manage energy consumption efficiently. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for applications requiring precise timing signals within space-constrained electronic designs.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Integrates a standby or power-down mode to reduce current consumption when inactive
• Delivers stable LVCMOS output signals for reliable digital interface compatibility
• Utilizes a leadless SMD package design to facilitate automated surface-mount assembly

Oscillators Applications

• Portable consumer electronics requiring low-power clock sources
• Embedded systems utilizing LVCMOS-compatible processors
• Communication modules needing precise 29.4989 MHz timing references
• Industrial control devices with strict size limitations

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6 mm package dimensions to prevent soldering defects during assembly.

Oscillators Selection Notes

Select this model when a 29.4989 MHz frequency is strictly required alongside low-voltage operation. Consider the LVCMOS output type if interfacing directly with standard digital logic families without additional buffering. Evaluate the power-down feature necessity for battery-operated applications where standby current significantly impacts overall system runtime.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor timing solutions. The series typically includes various frequencies optimized for modern portable devices. The 'PD' suffix indicates the inclusion of a power-down pin functionality, distinguishing it from standard continuous-operation variants within the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 29.4989 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify equivalent performance specifications such as phase noise and stability before swapping components to ensure signal integrity remains uncompromised in the target application.