18QHTF21-21.380-PD

Oscillators Overview

The 18QHTF21-21.380-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.38 MHz and utilizes LVCMOS output logic. 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 with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Oscillators Feature Summary

• Integrates LVCMOS output logic for direct interfacing with digital circuits
• Features a standby mode to reduce power consumption during idle periods
• Utilizes a surface-mount 4-SMD no-lead package for automated assembly

Oscillators Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing reference for communication interfaces
• Synchronization sources in consumer electronic devices

Oscillators Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target system design before procurement. Confirm that the 1.8V supply voltage aligns with the host circuit's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent soldering issues during assembly.

Oscillators Selection Notes

Select this component when a 21.38 MHz clock source is required with low voltage operation. Consider the LVCMOS output compatibility with the receiving logic family. Evaluate the thermal performance if the device will operate near its maximum rated temperature limits. The small form factor makes it suitable for space-constrained designs.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options in a standardized 4-SMD package. The series is characterized by low voltage operation and standby capabilities. Other variants in the series share similar physical dimensions and electrical characteristics but differ in output frequency and potentially supply voltage options.

Oscillators Replacement Considerations

Direct substitutes must match the 21.38 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications with alternative manufacturers' components to ensure functional equivalence.