18QHTF21-69.545-OE

Overview

The 18QHTF21-69.545-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 69.545 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features an enable/disable control capability for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Provides stable clock signals at 69.545 MHz using LVCMOS output logic
• Operates on a 1.8V supply voltage with integrated enable/disable functionality
• Utilizes a small form factor 4-SMD no-lead package for space-constrained designs

Applications

• Embedded systems requiring precise timing references
• Communication equipment utilizing standard clock frequencies
• Consumer electronics with low-voltage logic interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the datasheet for thermal specifications if operating near temperature limits.

Selection Notes

Select this component when a fixed 69.545 MHz clock source is required with low power consumption. The LVCMOS output ensures compatibility with standard digital logic families. Consider the enable pin feature if dynamic power saving is necessary. The small package size makes it suitable for dense board layouts where larger oscillators cannot fit.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm package. These devices are designed for general-purpose timing applications in portable and industrial electronics, providing reliable performance across specified temperature ranges.

Replacement Considerations

Direct substitutes must match the 69.545 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult manufacturer cross-reference lists for equivalent parts from other suppliers.