18QHTF21-10.779375-PD

Overview

The 18QHTF21-10.779375-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.779375 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is engineered for precise timing applications requiring low profile and stable clock signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality to reduce power consumption during standby
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

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

Procurement Notes

Verify the specific ordering suffix PD against official Mercury Electronics documentation to confirm the presence of the power-down feature and exact electrical specifications. Ensure the required frequency tolerance and load capacitance match the target circuit design requirements before finalizing procurement orders.

Selection Notes

Select this component when a 1.8V supply voltage and LVCMOS output are required. The 2.0x1.6 mm package size is suitable for space-constrained designs. Confirm that the 10.779375 MHz frequency aligns with the system clock needs and that the power-down capability is necessary for the application's power management strategy.

Part Context

This part belongs to the Mercury 18QHTF21 series of surface mount oscillators. The series typically offers various frequencies and supply voltages. The 'PD' suffix indicates a specific variant with power-down control, distinguishing it from standard continuous-operation models within the same physical footprint and family.

Replacement Considerations

Direct replacements must match the 10.779375 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical parameters such as phase noise and jitter if available in competitor datasheets.