18QHTF21-65.667-PD

Overview

The 18QHTF21-65.667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 65.667 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features a standby or power-down function to manage energy consumption. The component 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 and power-down functionality
• Utilizes LVCMOS output logic

Applications

• Digital signal processing circuits
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a precise 65.667 MHz reference is needed in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital systems. Consider the LVCMOS interface compatibility with your target microcontroller or FPGA. The small 2.0x1.6mm package allows for high-density board layouts.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature surface-mount oscillators. The series offers various frequencies within a standardized 4-SMD package. The 'PD' suffix indicates the inclusion of power-down capabilities, distinguishing it from standard continuous-operation variants in the same form factor.

Replacement Considerations

Direct replacements must match the 65.667 MHz frequency, 1.8V supply, and LVCMOS output. Verify that substitute components support the same 2.0x1.6mm footprint and 4-pin configuration. Ensure equivalent electrical characteristics for reliable timing performance.