18QHTF21-65.550-PD

Overview

The 18QHTF21-65.550-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 65.55 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Generates a precise 65.55 MHz clock signal using LVCMOS logic levels
• Operates on a single 1.8V power supply rail
• Supports low-power operation through an integrated standby or power-down mode

Applications

• Digital signal processing systems requiring stable clock sources
• Communication equipment utilizing LVCMOS interfaces
• Portable electronic devices constrained by size and power consumption

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power architecture. Confirm that the 4-SMD no-lead package footprint matches your PCB layout specifications to ensure proper assembly and electrical connectivity.

Selection Notes

Select this component when a 65.55 MHz frequency is strictly required for LVCMOS applications. Consider the 1.8V operating voltage and the availability of a power-down pin for energy management. Evaluate the 2.0x1.6 mm package size against spatial constraints within the target electronic assembly to ensure compatibility.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF21 series, which provides standard XO solutions in small form factors. The series supports various frequencies and voltages, catering to modern electronics needing reliable timing signals. The 18QHTF21-65.550-PD specifically addresses needs for 65.55 MHz generation in compact, low-voltage designs.

Replacement Considerations

Compatible substitutes include other 65.55 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation from manufacturers such as Epson, NDK, or SiTime. Verify pinout compatibility and electrical parameters before substitution.