18QHTF21-67.515-PD

Overview

The 18QHTF21-67.515-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 67.515 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

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

Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power

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 PCB layout supports the 4-SMD no-lead package footprint to guarantee reliable soldering and electrical performance during assembly.

Selection Notes

Select this component when a precise 67.515 MHz reference is required in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. Consider the LVCMOS output compatibility with downstream logic gates. The small 2.0x1.6 mm package allows for high-density board layouts compared to larger oscillator packages.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within the same compact form factor. The 'PD' suffix indicates the inclusion of a power-down feature, distinguishing it from standard continuous-operation models in the product line.

Replacement Considerations

Direct replacements must match the 67.515 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar low-profile oscillators if Mercury Electronics stock is unavailable.