18QHTF21-42.840-PD

Oscillators Overview

The 18QHTF21-42.840-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.84 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. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic

Oscillators Applications

• General electronic circuits requiring precise timing
• Embedded systems utilizing LVCMOS interfaces
• Portable devices due to low voltage and small form factor

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable to maintain signal integrity. Confirm that the 4-SMD no-lead package footprint matches your PCB layout specifications to ensure proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a 42.84 MHz clock source is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint and the need for power management features like standby mode. The small 2.0x1.6mm package makes it suitable for space-constrained designs compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 4-SMD no-lead package. The series supports LVCMOS outputs and includes power-down capabilities, providing a consistent form factor and interface across different frequency options for system designers.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies such as 18QHTF21-51.200-PD or 18QHTF21-6.000-PD if frequency adjustment is permissible. Cross-brand replacements must match the 4-SMD no-lead package, 1.8V supply, and LVCMOS output type.