18QHTF21-35.478-PD

Oscillators Overview

The 18QHTF21-35.478-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 35.478 MHz. It utilizes LVCMOS output logic and supports a supply voltage of 1.8V. The component features a power-down function via a standby control input. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application's datasheet before procurement. Ensure the 1.8V supply voltage aligns with the system design. Confirm that the 4-SMD package footprint matches the PCB layout constraints. Check for any specific environmental ratings if the device operates in extreme conditions.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The small 2.0x1.6 mm package makes it suitable for space-constrained designs. Consider the power-down feature if energy efficiency during idle states is a priority. Ensure the 35.478 MHz frequency meets the system clock requirements without additional dividers.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD form factor. The series is designed for general-purpose timing applications where size and low power consumption are critical. Mercury Electronics specializes in quartz crystals and oscillators, providing reliable frequency control solutions.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical pinout and package but different frequencies, such as 18QHTF21-51.200-PD or 18QHTF21-8.000-PD, provided the frequency difference is acceptable. Cross-brand replacements require matching LVCMOS output, 1.8V supply, and 4-SMD package dimensions.