18QHTF21-59.942-PD

Overview

The 18QHTF21-59.942-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 59.942 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a power-down standby mode to reduce consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm by 1.6mm. This component serves as a precise clock source for digital circuits.

Feature Summary

• Provides stable 59.942 MHz clock signal via LVCMOS interface
• Supports low-power operation through dedicated standby mode
• Utilizes surface-mount packaging for automated assembly

Applications

• Digital system clock generation
• Communication module timing references
• Embedded processor clock sources

Procurement Notes

Verify the specific operating temperature range 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 4-SMD footprint matches your PCB layout constraints. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this model when a precise 59.942 MHz frequency is required with low voltage operation. Consider the 1.8V supply constraint and LVCMOS compatibility with downstream logic. Evaluate the need for power-down functionality to manage system energy efficiency. Compare physical dimensions against available board space.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar small form factors. Mercury Electronics is a specialized manufacturer of frequency control products with a long history in quartz crystal production.

Replacement Considerations

Direct substitutes include other 59.942 MHz LVCMOS oscillators in 2.0x1.6mm packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as jitter and phase noise before substitution.