18QHTF21-13.4965-PD

Overview

The 18QHTF21-13.4965-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.4965 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power reduction
• Utilizes LVCMOS output interface

Applications

• General-purpose digital clock generation
• Embedded system timing references
• Consumer electronics control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues during manufacturing.

Selection Notes

Select this component when a fixed 13.4965 MHz reference is required with minimal power consumption. The integrated standby feature makes it suitable for battery-operated devices. Consider the LVCMOS compatibility with downstream logic gates. Evaluate thermal performance if the operating environment exceeds standard commercial temperature ranges.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from standard continuous-operation variants within the same physical package family.

Replacement Considerations

Direct substitutes must match the 13.4965 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as jitter and duty cycle. Cross-reference with other manufacturers offering equivalent SMD oscillators only if pin-to-pin and parameter-matched.