18QHTF21-10.240-PD

Overview

The 18QHTF21-10.240-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 10.24 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead surface-mount package, suitable for space-constrained electronic designs requiring precise clock signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power management
• 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 frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the LVCMOS output levels are compatible with the receiving logic inputs. Check for any specific handling instructions regarding the surface-mount package type.

Selection Notes

Select this component when a 10.24 MHz clock source is required with low power consumption capabilities. The 1.8V operating voltage makes it suitable for modern low-voltage digital systems. Consider the physical dimensions of the 4-SMD package to ensure adequate PCB real estate. Evaluate the need for a power-down feature if battery life or thermal management is a critical design constraint.

Part Context

This part belongs to the 18QHTF21 series of oscillators from Mercury Electronics, which typically offers various frequency options within a standardized small outline package. The series is designed for applications requiring reliable clock signals in consumer electronics and industrial equipment. The 'PD' suffix likely indicates the presence of a power-down control pin or feature, distinguishing it from standard continuous-operation variants.

Replacement Considerations

Direct replacements must match the 10.24 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise if specified in the original design. Consult manufacturer cross-reference lists for equivalent parts from other suppliers.