18QHTF21-123.930-PD

Overview

The 18QHTF21-123.930-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 123.93 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down (standby) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode capability
• Utilizes LVCMOS output interface

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply rail aligns with the target circuit design. Ensure the 2.0x1.6mm footprint matches the PCB layout constraints. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a precise 123.93 MHz reference is needed in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. The integrated power-down feature aids in battery-operated applications requiring extended standby times.

Part Context

This model belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series is characterized by small form factors and standardized output levels. The '18' prefix typically indicates the 1.8V supply variant within the product line.

Replacement Considerations

Cross-reference with other 123.93 MHz LVCMOS oscillators in 2.0x1.6mm packages. Verify pin compatibility and electrical parameters such as jitter and phase noise before substitution.