18QHTF21-74.930-PD

Overview

The 18QHTF21-74.930-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.93 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby and power-down functionality for energy management
• Delivers LVCMOS output signal compatibility

Applications

• General clock generation in electronic circuits
• Embedded systems requiring precise timing references
• Portable devices utilizing low-power oscillators

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a 74.93 MHz reference is necessary for LVCMOS-compatible digital interfaces. The choice is driven by the need for a small 2.0x1.6 mm form factor and integrated power-down capabilities. Consider the operating temperature range specifications to ensure reliability under your environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within a standardized 1.8V LVCMOS format. The 'PD' suffix indicates the inclusion of power-down control, distinguishing it from models without this feature.

Replacement Considerations

Direct substitutes must match the 74.93 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering identical electrical parameters and physical dimensions.