18QHTF21-67.000-PD

Overview

The 18QHTF21-67.000-PD is a 67 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates with an LVCMOS output logic and supports a supply voltage of 1.8V. The device features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Provides stable 67 MHz clock signals via LVCMOS output interface
• Supports low voltage operation at 1.8V supply
• Includes standby capability to reduce power consumption

Applications

• General purpose clock generation in embedded systems
• Timing reference for digital signal processing circuits
• Clock source for communication interfaces requiring standard frequencies

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's specifications. Confirm that 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.

Selection Notes

Select this component when a precise 67 MHz timing source is required for low-voltage digital applications. Consider the small 2.0x1.6 mm package size if space constraints are critical. Evaluate the need for standby functionality to manage system power efficiency. Compare performance metrics such as phase noise and jitter against other available oscillators in the same family to ensure compatibility with your signal integrity requirements.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small outline package. The 'PD' suffix likely indicates the presence of a power-down or standby pin configuration, distinguishing it from continuous-operation variants within the same physical footprint family.

Replacement Considerations

Direct replacements must match the 67 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics before substitution.