18QHTF21-57.918367-PD

Overview

The 18QHTF21-57.918367-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 57.918367 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V 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 requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power management
• Compact 4-SMD no lead surface mount package

Applications

• Digital signal processing circuits
• Communication equipment clocking
• Microprocessor system timing

Procurement Notes

Verify the specific ordering suffix and voltage rating against the official datasheet to ensure compatibility with the target circuit design. Confirm that the 1.8V supply requirement aligns with the system power rails. Check for any specific handling instructions related to the SMD package type during assembly.

Selection Notes

Select this component when a precise 57.918367 MHz reference is required with low voltage operation. Consider the LVCMOS output swing requirements of the receiving logic gates. Evaluate the thermal performance and size constraints of the 4-SMD package within the overall PCB layout.

Part Context

This part belongs to the QHTF series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, including 2.5V variants like the 25QHTF21 model. The manufacturer specializes in quartz-based frequency control products with decades of industry experience.

Replacement Considerations

The 25QHTF21-57.918367-PD is a similar variant offering 2.5V operation instead of 1.8V. Ensure voltage level compatibility before substitution. Other frequencies in the QHTF series may share the same package but differ in electrical specifications.