18QHTF21-73.250-PD

Overview

The 18QHTF21-73.250-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 73.25 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby function controlled via the enable pin. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. The component supports standard XO specifications suitable for precision timing applications requiring low profile and reliable clock signals.

Feature Summary

• Integrates LVCMOS output interface for direct digital logic compatibility
• Supports active standby mode through dedicated power-down control
• Utilizes surface-mount no-lead packaging for automated assembly

Applications

• High-speed data communication interfaces
• Embedded system clock generation
• Consumer electronics timing circuits

Procurement Notes

Verify the specific suffix designation against official Mercury Electronics documentation to confirm functional differences between OE and PD variants. Ensure the selected part matches the required enable logic and supply voltage parameters for the target circuit design before finalizing procurement orders.

Selection Notes

Select this component when a 1.8V supply and 73.25 MHz frequency are required. Consider the 2.0x1.6mm footprint constraints and LVCMOS drive requirements. Validate thermal performance and load capacitance matching against the host microcontroller or FPGA specifications.

Part Context

This model belongs to the Mercury Electronics SMD oscillator series designed for space-constrained applications. The 18QHTF21 series typically offers standard stability and phase noise characteristics. The PD suffix indicates a specific enable configuration distinct from other variants in the product line.

Replacement Considerations

Cross-reference with 18QHTF21-73.250-OE if the enable logic polarity differs. Verify that substitute components maintain identical 1.8V operation and 2.0x1.6mm package dimensions to ensure mechanical compatibility.