18QHTF21-28.636364-PD

Oscillators Overview

The 18QHTF21-28.636364-PD is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 28.636364 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Integrates standby and power-down capabilities to reduce consumption
• Utilizes LVCMOS output logic for standard digital interface compatibility

Oscillators Applications

• Embedded systems requiring precise clock timing
• Portable electronic devices utilizing low-power components
• Digital communication interfaces needing stable frequency sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable and within the specified operating range. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues during manufacturing.

Oscillators Selection Notes

Select this component when a 28.636364 MHz clock signal is required with minimal power consumption. The 1.8V operating voltage makes it suitable for battery-powered applications. Consider the small form factor if space constraints are critical. Verify that the LVCMOS output levels are compatible with the receiving logic inputs of the target system.

Oscillators Part Context

This model belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series is characterized by its small footprint and low power consumption features. The '18' prefix typically indicates the 1.8V supply voltage variant, while the suffix '-PD' denotes the inclusion of power-down functionality for enhanced energy management in portable electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 28.636364 MHz frequency, 1.8V supply, and 4-SMD no-lead package. Check datasheets for equivalent parts from other manufacturers offering LVCMOS outputs with similar standby features. Ensure pinout compatibility and thermal characteristics align with the original design specifications.