18QHTF21-67.918367-PD

Overview

The 18QHTF21-67.918367-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 67.918367 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a standby function for power down control. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby capability for power management
• Utilizes LVCMOS output interface

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock sources

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Ensure that the 1.8V supply rail meets the current consumption specifications during active and standby modes to maintain stable oscillator performance.

Selection Notes

Select this component when a 67.918367 MHz clock source is required with low power consumption constraints. The 4-SMD no-lead package is ideal for space-constrained designs. Confirm compatibility with LVCMOS input thresholds of downstream logic gates to ensure signal integrity.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan producing crystals and oscillators. This series typically offers standard packaging options for general-purpose timing applications.

Replacement Considerations

Direct substitutes must match the 67.918367 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify equivalent electrical parameters such as phase noise and stability if available in official datasheets.