18QHTF21-78.36432-PD

Overview

The 18QHTF21-78.36432-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 78.36432 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for precise timing applications requiring low power consumption and reliable performance within specified operating temperature ranges.

Feature Summary

• Supports standby and power-down modes for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation
• Embedded systems requiring precise timing references
• Consumer electronics with low power constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD package footprint matches your PCB layout guidelines. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly and storage processes.

Selection Notes

Select this component when a fixed frequency of 78.36432 MHz is required with LVCMOS outputs. Consider the 1.8V operating voltage and standby functionality for power management needs. Evaluate the physical size constraints to ensure the 2.0x1.6 mm package fits the available board space. Compare against other Mercury Electronics models if different frequencies or voltage levels are needed.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The suffix PD indicates the presence of a power-down feature. These components are widely used in applications demanding stable clock signals in small form factors.

Replacement Considerations

Direct substitutes may include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies. Verify compatibility with existing firmware or hardware dependencies on the specific 78.36432 MHz frequency before swapping.