18QHTF21-13.421772-PD

Overview

The 18QHTF21-13.421772-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 13.421772 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 2.0mm x 1.6mm.

Feature Summary

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

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded microcontroller timing

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 within the operational limits defined in the official datasheet to ensure reliable oscillator performance.

Selection Notes

Select this component when a precise 13.421772 MHz reference is required in space-constrained designs. The choice depends on the compatibility of the LVCMOS output with downstream logic levels and the necessity for a power-down feature to manage system energy consumption effectively.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series offers various frequencies in a small SMD footprint, catering to modern electronics requiring miniaturized timing solutions with established manufacturing heritage.

Replacement Considerations

Direct substitutes must match the 13.421772 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical specifications with alternative manufacturers before implementation.