18QHTF21-55.46667-PD

Overview

The 18QHTF21-55.46667-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 55.46667 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 3.3V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within a small form factor.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby control for power management
• Compact surface-mount package design

Applications

• General purpose clock generation
• Digital signal processing systems
• Communication equipment timing

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 3.3V supply voltage aligns with the target circuit's power rails. Confirm that the 4-SMD No Lead package footprint matches the PCB layout to prevent assembly issues. Cross-reference the part number suffix to ensure the correct pinout and operational mode are selected for the intended application environment.

Selection Notes

Select this component when a 55.46667 MHz clock source is required with LVCMOS compatibility. Consider the 3.3V operating voltage constraint during system design. The small 2.0x1.6mm package makes it suitable for space-constrained designs. Evaluate the need for standby functionality if power efficiency is a priority. Compare performance metrics such as phase noise and stability against alternative oscillators if high-precision timing is critical for the specific application.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The 'PD' suffix typically indicates the presence of a power-down or standby feature. These components are widely used in consumer electronics and industrial applications where reliable timing is essential. The manufacturer provides datasheets detailing electrical characteristics and mechanical dimensions for integration.