18QHTF21-77.500-OE

Overview

The 18QHTF21-77.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 77.5 MHz and utilizes an LVCMOS output interface. The device supports a supply voltage of 1.8V and features enable/disable control functionality. It is housed in a compact 4-SMD, No Lead package designed for surface mount applications. The component is engineered for reliable timing signal generation in electronic circuits requiring precise clock synchronization.

Feature Summary

• Standard XO configuration with LVCMOS output interface
• Integrated enable and disable control capability
• Compact 4-SMD No Lead surface mount package design

Applications

• General purpose digital circuit timing
• Embedded system clock generation
• Communication equipment synchronization

Procurement Notes

Verify the specific suffix 'OE' against official Mercury Electronics documentation to confirm exact electrical parameters and pinout compatibility. Ensure that the 1.8V supply requirement aligns with the target system's power rails. Confirm that the enable/disable feature is utilized correctly within the circuit design to manage power consumption and signal integrity during inactive periods.

Selection Notes

Select this component when a 77.5 MHz clock source with LVCMOS logic levels is required. The 1.8V operating voltage dictates compatibility with low-power digital logic families. The surface mount package necessitates appropriate PCB footprint design. Consider the enable/disable feature if power management or signal gating is necessary for the specific application environment.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 'OE' suffix typically denotes a specific packaging or ordering variant. This model provides a fixed frequency solution compared to programmable alternatives, ensuring stable performance without external tuning components.

Replacement Considerations

Direct substitutes include other 77.5 MHz LVCMOS oscillators in similar packages. Verify voltage tolerance and current consumption matches. Check if the enable pin polarity is compatible. Cross-reference with Mercury Electronics' updated product lists for potential obsolescence notices.