18QHTF21-63.79333-PD

Overview

The 18QHTF21-63.79333-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 63.79333 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability to reduce energy consumption when not in active use. The component is housed in a compact 4-SMD, no lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports low-voltage operation at 1.8V with LVCMOS interface compatibility
• Includes standby functionality for power management optimization
• Utilizes a small-footprint 4-SMD no-lead package design

Applications

• Embedded systems requiring precise clock timing
• Consumer electronics with space-constrained layouts
• Industrial control modules needing stable frequency references

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply rail is stable and within tolerance. Ensure PCB layout guidelines for the 4-SMD no-lead package are followed to maintain signal integrity and thermal performance during soldering processes.

Selection Notes

Select this component when a 63.79333 MHz reference is required with low power constraints. The 1.8V specification limits usage to compatible logic families. Consider the standby feature if power efficiency is critical. The small package size aids in high-density board designs compared to larger through-hole alternatives.

Part Context

This part belongs to Mercury Electronics' QHTF series of quartz crystal oscillators. The series offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant, while 'PD' denotes the package type. This specific model provides a non-standard frequency point for specialized synchronization needs.

Replacement Considerations

Direct substitutes must match the 63.79333 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility for the 4-SMD no-lead footprint. Alternative models from other manufacturers require careful electrical parameter matching to ensure functional equivalence in the target application.