18QHTF21-75.0012-PD

Overview

The 18QHTF21-75.0012-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 75.0012 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.

Feature Summary

• Generates a precise 75.0012 MHz clock signal using LVCMOS logic levels
• Supports low-power operation through a dedicated standby mode
• Designed for direct surface mounting on printed circuit boards

Applications

• Battery-powered portable electronic devices
• General-purpose digital clock distribution systems
• Embedded systems requiring stable timing references

Procurement Notes

Verify the specific ordering suffix to confirm the presence of the power-down feature, as variants within this series may differ in control functionality. Ensure the selected part matches the required 1.8V supply specification and LVCMOS output compatibility with the target system interface.

Selection Notes

Select this component when a fixed 75.0012 MHz frequency is required with minimal power consumption during idle states. The 4-SMD package suits space-constrained designs. Confirm that the operating temperature range meets the environmental requirements of the final application before integration.

Part Context

This model belongs to the Mercury Electronics XO series, which includes various frequencies and supply voltages. The 'PD' suffix typically indicates the inclusion of a power-down or standby control pin, distinguishing it from continuously running variants in the same physical footprint family.

Replacement Considerations

Direct substitutes must match the 75.0012 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify that any alternative part supports the standby control function if power management is critical to the design.