18QHTF21-63.000-PD

Overview

The 18QHTF21-63.000-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 63 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a 1.8V supply voltage. It features a power-down function accessible via a standby control input to minimize energy consumption when not in use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount configuration supports automated assembly processes suitable for space-constrained electronic designs.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated power-down capability for energy efficiency
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation in embedded systems
• Timing reference for low-voltage digital circuits
• Consumer electronics requiring small form factor 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 power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for any specific handling instructions regarding electrostatic discharge sensitivity during storage and assembly processes.

Selection Notes

Select this component when a stable 63 MHz clock source is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage constraint relative to other system voltages. Evaluate the need for power-down functionality to manage overall system power budget. Compare physical size constraints against alternative packages if space is limited.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within the standard XO category. These components are characterized by their small footprint and low voltage operation. They are intended for modern portable and compact electronic devices where size and power efficiency are critical design parameters.

Replacement Considerations

Direct substitutes must match the 63 MHz frequency, LVCMOS output, and 1.8V supply voltage. Verify pinout compatibility for the 4-SMD package. Check equivalent specifications for jitter and stability if the application demands high precision.