18QHTF21-42.240-PD

Oscillators Overview

The 18QHTF21-42.240-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 42.24 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby (power down) feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Provides LVCMOS signal output compatibility

Oscillators Applications

• General clock generation in embedded systems
• Timing reference for digital circuits
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Oscillators Selection Notes

Select this component when a precise 42.24 MHz timing source is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage as a primary constraint for power-sensitive designs. The small 2.0x1.6 mm form factor makes it suitable for space-constrained applications. Evaluate the need for standby functionality if power management during idle states is critical to the system architecture.

Oscillators Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-profile surface-mount oscillators. The series typically offers various frequency options within a standardized package size. The 'PD' suffix indicates the inclusion of a power-down control capability, distinguishing it from continuous-operation variants within the same physical footprint family.

Oscillators Replacement Considerations

Direct replacements must match the 42.24 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications. Cross-reference with other manufacturers offering similar low-profile XO components to ensure functional equivalence in timing performance.