18QHTF21-42.857142-PD

Oscillators Overview

The 18QHTF21-42.857142-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 42.857142 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Utilizes a leadless SMD package for surface mounting

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 42.857142 MHz clock source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage constraint and the need for standby functionality. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the available board space and environmental conditions.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF series of standard crystal oscillators. The series offers various frequencies with LVCMOS outputs and low-voltage operation. The 'PD' suffix typically indicates a specific pinout or packaging variant within the manufacturer's catalog, distinct from other series members.

Oscillators Replacement Considerations

Direct substitutes must match the 42.857142 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD no-lead package. Verify electrical parameters such as frequency stability and phase noise against the original datasheet to ensure functional equivalence in the application.