18QHTF21-64.0128-OE

Overview

The 18QHTF21-64.0128-OE is a standard XO oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 64.0128 MHz with an LVCMOS output logic. The device requires a 1.8V supply voltage and features enable/disable functionality. It is housed in a 4-SMD package with dimensions of 2.0x1.6 mm. The unit exhibits a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Enable/Disable control pin for power management
• Compact 4-SMD surface mount package design

Applications

• High-performance embedded systems
• Digital signal processing circuits
• Communication equipment timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Check for any specific ordering suffixes that may indicate different packaging or testing standards.

Selection Notes

Select this component when a precise 64.0128 MHz clock source is required for LVCMOS-compatible digital logic. The ±50ppm stability suits applications where moderate precision is sufficient. Consider the low profile and small footprint for space-constrained designs. Evaluate the enable/disable feature if dynamic power saving is necessary during idle periods.

Part Context

This part belongs to the 18QHTF21 series of quartz crystal oscillators from Mercury Electronics. The series offers various frequencies tailored for high-performance applications. Mercury Electronic has been manufacturing frequency control products since 1973, specializing in quartz crystals and oscillators. This specific model represents a standard XO variant optimized for compact electronic assemblies.

Replacement Considerations

Direct substitutes include other 64.0128 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD 2.0x1.6mm footprints. Verify pinout compatibility and electrical characteristics such as current consumption and rise/fall times. Cross-reference with similar series from Mercury or other manufacturers offering equivalent stability and temperature ranges.