18QHTF21-29.491-PD

Oscillators Overview

The 18QHTF21-29.491-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 29.491 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 3.3V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 3.3V
• Includes power-down capability for energy management
• Compact surface-mount form factor

Oscillators Applications

• General-purpose digital timing circuits
• Embedded system clock generation
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 3.3V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a precise 29.491 MHz reference is required for LVCMOS-compatible logic families. Consider the power-down feature if system-level power efficiency is critical. Evaluate the small package size against available board space constraints compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies and voltage options within a standardized small outline package. It serves as a direct replacement for legacy through-hole or larger surface-mount oscillators where space and power consumption are limiting factors.

Oscillators Replacement Considerations

Direct substitutes include other 29.491 MHz LVCMOS oscillators in 2.0x1.6mm packages from manufacturers such as Epson or SiTime, provided pin compatibility and electrical specifications match exactly.