18QHTF21-29.9079-PD

Oscillators Overview

The 18QHTF21-29.9079-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 29.9079 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable function with standby power down capability. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm.

Oscillators Feature Summary

• Supports standby power down mode for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact surface mount design suitable for space-constrained applications

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded control circuits

Oscillators Procurement Notes

Verify the specific suffix 'PD' to confirm the presence of the standby power down feature, as this distinguishes it from non-power-down variants like the 'OE' suffix. Ensure the 1.8V supply voltage requirement aligns with the target system's power rails. Confirm the 29.9079 MHz frequency matches the precise timing requirements of the application circuit before finalizing procurement.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a specific 29.9079 MHz frequency reference. The choice depends on the necessity for a power-down state to manage system energy consumption during idle periods. Consider the small 2.00mm x 1.60mm footprint if board real estate is limited. Verify that LVCMOS logic levels are compatible with the receiving input pins of the connected integrated circuits.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and package sizes, typically ranging from 2.0mm x 1.6mm to larger footprints. This specific model represents a standard XO variant optimized for low voltage operation, distinguishing it from higher voltage or different logic output families within the manufacturer's catalog.

Oscillators Replacement Considerations

Direct replacements must match the 29.9079 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Variants with different suffixes may lack the power-down feature or operate at different voltages. Cross-reference with other manufacturers offering identical electrical specifications and mechanical dimensions to ensure pinout compatibility.