18QHTF21-75.675-PD

Overview

The 18QHTF21-75.675-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.675 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby function for power down control. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications. The component supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Feature Summary

• Supports standby mode for power down control
• Utilizes LVCMOS output logic
• Compact 4-SMD no lead package design

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency value matches the target application requirements before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the LVCMOS output compatibility is validated against the receiving logic inputs. Check the operating temperature range suitability for the intended environmental conditions. Review the package dimensions to confirm fit within the designated PCB footprint area.

Selection Notes

Select this component when a precise 75.675 MHz clock source is required for low-voltage digital systems. Consider the ±50ppm stability specification for timing accuracy needs. Evaluate the 4-SMD package size for space-constrained designs. Assess the standby functionality if power management during idle states is necessary. Compare against alternative frequencies if the exact 75.675 MHz is not strictly mandated.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequency options while maintaining consistent electrical characteristics and packaging. Similar models include variants with different frequencies such as 75.475 MHz or 7.9875 MHz. The series is designed for standard surface mount assembly processes.

Replacement Considerations

Direct substitutes may include other 18QHTF21 series parts with identical frequency specifications. Verify pinout and electrical parameters match exactly before substitution. Cross-reference with manufacturer datasheets for equivalent performance metrics.