18QHTF21-77.868-PD

Overview

The 18QHTF21-77.868-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 77.868 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Feature Summary

• Supports low voltage operation with 1.8V supply requirement
• Includes standby capability for power management
• Utilizes LVCMOS output logic for digital interfacing

Applications

• General purpose clock signal generation
• Digital system timing reference
• Embedded electronics control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 4-SMD no-lead package dimensions fit within your PCB footprint constraints. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications to maintain signal integrity.

Selection Notes

Select this component when a precise 77.868 MHz clock source is required for LVCMOS compatible devices. Consider the 1.8V operating voltage and standby feature if power efficiency is a priority. Verify that the small form factor aligns with space-constrained design layouts.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent LVCMOS outputs and 1.8V operation. The suffix PD indicates specific packaging or handling characteristics common to this product line.

Replacement Considerations

Check datasheets for other 18QHTF21 variants with matching 77.868 MHz frequency and LVCMOS output. Ensure replacement parts support 1.8V operation and identical 4-SMD no-lead package dimensions for direct board compatibility.